Friday, August 30, 2024
Issue 607: Star Nests in Cygnus
I had just finished last month’s AstroBlog, muchachos, when I was moved to begin the next one. The way the weather’s been this summer, and the knowledge it will likely get worse as September and October approach, impelled me to get back to work rather than take a break. One late July evening it ‘peared the sky might be good enough for the SeeStar, Suzie, to take a few of her little celestial snapshots. The Gulf beginning to churn with storms, I figgered I’d better get after it. I’d do some visual observing of the objects next break in the clouds. Whenever that was.
“Wut objects, Unk? Wut objects, huh?” Well, Skeeter, I’ve kinda been on a roll
revisiting the chapters of my urban deep sky observing book, The Urban Astrnomer's Guide, so I figgered I’d keep on keepin’ on with that for now.
Specifically, with the Cygnus chapter, “Star Nests in Cygnus.” The ol’ Northern
Cross would be near-perfectly placed in the east mid evening, and maybe
the weather gods would indeed show your ever-hopeful Uncle some mercy.
By “star nests,” natcherly I meant “open (galactic) star
clusters.” They were a favorite of mine when Miss Dorothy and I lived downtown
in the original Chaos Manor South. They were the one deep sky object I could
see easily and well. “Opens” became something of an obsession with moi—one
time I set out to view all the clusters in Cassiopeia visible with a 12-inch
telescope from an urban backyard (recounted in Urban Astronomer’s “The
Cassiopeia Clusters”). That’s a lotta star clusters, campers, but, amazingly,
I wasn’t tired of ‘em after that binge and soon went on to survey the Swan’s
clutch.
Anyhoo, after checking-in to the Mobile Amateur Radio Club’s
Wednesday Night Net, I stuck my head out of the radio shack and had a look. As
astronomical twilight came in, it was just as Astrospheric had said: “Mostly clear.” But that blessed clear sky was accompanied
by haze and poor, very poor, transparency. Oh, well, as Unk often says, “Ain’t
nuthin’ to it but to do it.” I’d see what Suzie could pull out of a milk-washed
Cygnus.
I had set the SeeStar up on my old Manfrotto tripod just before
dark. She was leveled (a good idea if you want decent tracking) and ready to
go. All I had to do was remove the scope cover I’d put over her to ward off the
errant shower—they can show up any time of the day or night in the Swamp.
Mashed the power button, and The Suze intoned, “Power on! Ready to connect!”
Zelda. |
The first target would be Messier 39, an old favorite
located to the Northeast of shimmering Deneb. To get to it, I brought up the
SeeStar’s star atlas on the iPhone, searched for and located M39, and chose
“gazing.” Suze performed her usual initial calibrations, and, in a minute or
three, headed for the cluster. Our target was obvious even in the short
“gazing” exposures. As usual, she had placed it dead center in the frame. I
started the exposures, ten second exposures, rolling in, and headed to the
kitchen to retrieve some cold 807s (for me) and catnip (for the felines).
All Unk and the cats did for the balance of the evening was
choose the next target when the stacked results Suzie delivered to my phone
looked good enough. Given the conditions, I didn’t want to go too long. Also,
I hoped to cover all the targets in one night, and, so, limited each open
cluster to 10 minutes or less. With just a few minutes exposure, they looked purty
derned good. I did go a little longer on globular cluster M71 and M27,
The Dumbbell Nebula, my pièce de resistance for the evening. Suzie did a
nice job given the conditions.
Anyhoo, that was part one of the observing for this
one. The next morning, Miss Dorothy asked me if I didn’t miss being outside
with the telescope, “Not on a night like that one,” was my quick reply, but,
truthfully, I did miss being under the stars. That came some days later
when we got another clear—if no more transparent—evening.
Into the backyard went the 6-inch SkyWatcher (who whispered
to me her name is “Brandy,” which seems to fit). It was pretty much a
semi-scrub. Out there in the humid heat, I refamiliarized myself with the
SynScan Pro app on my iPhone that serves as Brandy’s hand control. Once I got
the hang of it, gotos were fine, even with just a two-star alignment. But you
know what? The punk sky conditions were just too much for the girl.
I was disappointed, but not much surprised. Thinking back to
my initial visual testing in the backyard of New Chaos Manor South a decade ago,
that was exactly what I’d experienced. Yes, of course the skies are better than
they were downtown. On a good, dry night, magnitude 5 stars are visible in this
suburban/country transition zone. On a dry night, which is something we
don’t often get in spring and summer (and increasingly, fall) in Possum Swamp. On
a humid summer’s eve, the heavens look much like they did from the original
Chaos Manor South in the Garden District.
How much telescope is needed for rewarding deep sky
observing under these conditions? The aforementioned testing showed that often even
8-inches wasn’t enough. At 10-inches, however, the improvement was marked. The
deep sky went from “kinda icky” to at least “interesting.” It looked to me as
if the visual scope for work from my backyard would have to be my 10-inch
Zhumell (GSO) Dobsonian, Zelda, at least until summer wanes and some
semblance of autumn comes in.
Miss Zelda is a great telescope with a surprisingly
excellent primary mirror. No, she’s not grab ‘n go in any shape form or
fashion, but it’s no problem to leave her outside under a scope cover in our
secure backyard as long as violent thunderstorms are not forecast. The only
question was whether I could still get her safely into the backyard without
damaging her, myself, or both of us.
One mostly clear if hazy afternoon, I found the answer is still
“yes.” To begin, I cautiously removed
Zelda from her rocker box—first time I’d done that in several years, I was
embarrassed to realize. Heavy, but not too heavy; at least not when just
lifting her out and standing her up on her (sorry, girl) rear end. Well, there would
be a problem if somebody decided to push the tube over with a paw, which is why
I locked the felines out of the sunroom to their outrage.
Moving the rockerbox/groundboard to the backyard was simplicity
itself. There’s a nice big handle on the front. Then, I returned to the tube,
lifted it with one hand on the rear cell and one arm around the middle of the
OTA. It’s harder to describe than do but suffice to say that while I wouldn’t
want to waltz Miss Zelda across the dance floor, carrying her ten meters into the yard was no problem, even considering I had to go down three
steps.
The verdict? The tube is heavy. Heavier than I
remembered. Eventually I’ll likely have to use a hand truck to get the scope
into the back 40. But if I must do that, I will do that. The last 30
years, a 10-inch has come to be thought of as a “small” telescope. It’s not.
One is a powerful performer on the deep sky.
Zelda mostly ready to go, I plugged in the battery pack that
powers her cooling fan; she’d been in the air-conditioned house, and, while not
as bad as it had been, the weather wasn’t exactly cool as the afternoon waned. Next?
A little TV with the cats until the long, slow DST hours between now and
astronomical twilight passed…
Nota Bene: The
order of the objects I looked at with Z was the same as in the book, Urban
Astronomer.
M39
It took me a long time to learn to appreciate this
galactic cluster, which lies well away from the Northern Cross asterism, about
nine-and-a-half degrees to the northeast. On a summer’s eve’ as a kid
astronomer, I’d maybe take a quick look at it and move on. All it was was a patch of medium-bright stars, with the more brilliant ones forming a
triangle. It was soon in the rearview mirror as me and my fellow members of the
Backyard Astronomy Society continued our fruitless search for the veil
nebula with our long focal length three and four-inch scopes.
As the years rolled on, and I turned more appropriate instruments
on M39, my opinion of this magnitude 4.6 cluster began to change. What’s “appropriate”?
A scope/eyepiece combo that puts some space around this half-degree size group.
Oh, and aperture doesn’t hurt either. Enough dark space to frame it, and enough
aperture to begin to show off the magnitude 12 and dimmer stars that lurk
inside the triangle of magnitude 6-range suns, and you begin to have something.
While M39 will never be a showpiece, yeah, it is something.
How do you look at it? On this evening, it showed off plenty of stars in Zelda
with a wide field 13mm ocular, but it just wasn’t pretty. I knew the solution: more field, less magnification. Inserting my
35mm Panoptic into Zelda’s focuser rewarded me with the, yes, awful pretty.
All those dim stars higher magnification revealed had disappeared, but just as
in Urban Astronomer, where I switched from a "big" scope to my old Short Tube 80 (mm) refractor, I thought
it was worth it. With plenty of space around it, M39 it looks more distinctive
and just better.
How about the SeeStar, Suzie? As you can see, she’s a
mite field-challenged for this one given the geometry of her chip. Oh, she
shows scads of stars. Everywhere. Yes, the bright triangle stands out. But the
cluster doesn’t have much snap. It doesn’t pop out of the background as
it does with a wide-field visual scope.
M29
Something puzzled me and my BAS buddies back in the day. There’s
only one other Messier object in Cygnus, a rather lackluster galactic
cluster that pales compared to some of the other sights in the Swan. Why? Who
knows, and be that as it may, with M29, it is what it is.
Suze? I devoted a mere 6-minutes exposure to Messier 29, and
that was all it took. Even in that snapshot, many dim background stars are
visible across the frame that weren’t seen in Zelda. The cluster itself looks
much the same; it sure stands out from the background. What helps this
magnitude 6.6 group? That small 10’ size. Dare I say it? It’s almost photogenic.
M71
Despite titling this chapter “Star Nests in Cygnus,” I did
take some detours, including to nearby Sagitta’s M71, which is 5 degrees
south-southwest of its famous neighbor, M27, the Dumbbell Nebula. The only
claim to fame M71 has is that while it is a globular cluster, it doesn’t
look much like one, appearing to be a rich and compressed open cluster like
M11. There was supposedly some debate over its status for a while, but I’m
skeptical about that. One look at M71’s color-magnitude diagram says “globular.”
And that is what it is, a (very) loose Shapley-Sawyer Class XI glob.
So, what’s it like visually? You’d think this magnitude 8.6
object would be as challenging as Lyra’s M56 or Coma’s NGC 5053. Nope, it’s easier
with smaller aperture scopes due to its small, 7.0’ size. It was certainly
visible with a 6-inch telescope on good nights. As I observe in Urban
Astronomer, though, more aperture helps. In the 12mm Ethos in the 10-inch, it’s
an obviously resolved little clump o’ stars.
In pictures, this wee globular is pretty and interesting if
not spectacular. Missy Suzy easily resolved hordes of cluster stars set against
a very rich background. You know what M71 looks like in Suze’s shot? It
looks amazingly like the Wild Duck Cluster. But, no, M71, which I’ve heard
called “The Angelfish Cluster” (?) in recent years, is a globular star cluster,
y’all.
NGC 6910
And that exhausts the Messiers. What’s left galactic
clusters-wise is, yes, NGC clusters. Now, now, don’t take on like
that. Some of ‘em ain’t that bad, like 6910 which those long years ago I
thought was, “A real surprise with the 8-inch f/5! Very nice indeed for a
non-Messier…about 10 – 15 stars visible.” In Zelda with the 150x delivered
with an 8mm Ethos, what was in the field was a scattering of dimmish stars
around an acute triangle of 9 – 10 magnitude ones. As on that long ago night,
there appeared to be around a dozen dimmer stars visible.
NGC 6866
What did I see when I took a gander at 6866 with my old
Meade 12.5-inch way back in the 1990s (it seems odd to say that; lately it
seems like yesterday)? “Beautiful field with the cluster looking like a miniature
M39.” And that’s still accurate; that was also my impression with Zelda: a
vaguely triangular shape of suns (I’ve heard this group called the “Kite
Cluster”). This magnitude 7.6, 6.0’ size
cluster is another NGC open that’s easy to see.
Suzie did a nice job on this one in only 5 minutes. Yes,
there are hordes of background stars, but the cluster is again easy to pick
out. Maybe it even looks a little more like a kite than it does visually, with
two curving arcs of stars that aren’t as noticeable visually forming the sides
of the kite.
NGC 6819
This is yet another example that makes a lie of the old saw,
“All NGC open clusters are the same—boring.”
The somewhat well-known Fox Head Cluster has a combined magnitude of 7.6
and covers a mere 6.0’ of sky. In the book, I pronounced it, “A very
attractive NGC open cluster in the 11-inch Schmidt Cassegrain…looked more oval
than square.” In Miss Z, the impression was, conversely, a diamond shaped
pattern of many tiny stars.
Inexplicably, I didn’t get NGC 6819 on my observing list
and, so, didn’t get a SeeStar image.
NGC 6834
For this one, we leave the “cross” area of Cygnus and head
towards Albireo. Our quarry is a small magnitude 7.8, 4.0’ across group. My
impression in the 10-inch Dobsonian was “small and dim,” and that was also what
my old 11-inch SCT showed in the glorious Day: “Small and dim. In the 11-inch
scope, I see a 5.0’ oval of faint stars…crossed by a prominent line of brighter
stars.
NGC 6830
And yet another good NGC open star cluster glowing softly at
magnitude 7.9 and extending 8.0’. For
this one, I again ventured out of Cygnus to another small nearby constellation,
Vulpecula, The Little Fox, home of the abovementioned Dumbbell. In Urban
Astronomer, I found 6830 to be, “Very distinct from the rich beautiful field
it is set in. Rectangular in shape.” Today? Much the same. A vaguely
rectangular or diamond-shaped pattern of a fair number of magnitude 9-10 stars
and many dimmer ones. Oh, for some inexplicable reason, some call this “The
Poodle Cluster.”
In the Suzie-shot, the cluster is identifiable around a
diamond of brighter suns, but, admittedly, it is beginning to recede into the
background. In the image it’s still easy to pick out but proceeding toward “not
well detached.”
NGC 6823
This magnitude 7.0’, 10.0’ size group is involved with a
large complex of nebulosity which was totally invisible in my urban skies. What
was visible was a nice enough galactic cluster: “A nice medium-sized
open cluster in the 8-inch f/5.” I also observed that the cluster looked
like a miniature Scorpius. I didn’t see that on this latter-day night with a
10-inch. What I saw was a rather shapeless sprinkling of magnitude 10 and
dimmer stars.
That is what I saw with the SeeStar as well. I didn’t expose
for long, and didn’t use a filter, so any nebulosity that might be there wasn’t
visible. I do note some star chains that give 6823 a vaguely flower-like shape.
Albireo
I ended each chapter of Urban Astronomer with a double star.
For this chapter, Albireo was obviously it. Now, the lustrous blue and gold “Cub
Scout Double” is not an object for a 50mm f/5 scope, but Suze still did a fair
job, showing a pair of strongly colored stars.
And that was that. Oh, on my imaging night, I did send Suzie to M27 to see what she could do, and she did a very fine job for a wee telescope. All that remained was to throw a cover over Zelda (I didn’t feel like—ahem—wrestling with the girl at the tail end of a long and hot evening). She’d be fine in our secure backyard, and getting her back to the Sunroom would be a far less daunting task in the morn’.
So…I saw some cool sights and found I could still (fairly)
easily set up the 10-inch. This night
was a win, then, especially since I’d had a good time, and it had brought back
some nice memories of my Urban Astronomer runs.
Next up? Another observing article, but we’ll give Urban
Astronomer a rest in favor of something (sort of) new.
Tuesday, July 30, 2024
Issue 606: Space Summer Comes Again + Combing the Tresses of Berenice with Charity and Suzie
Chalk up another one, muchachos. Another orbit of our friendly G2V star by your aged Uncle. That makes 71. A few years ago, I wouldn’t have told you that. Like many of my fellow Boomers, I’ve wrestled with old age—we just didn’t believe it could happen to us. But I think I’ve finally come to terms with it, at least to the extent of being able to say, “It is what it is.” Of course, I didn’t let any philosophical mumbo-jumbo interfere with another grand birthday in the old style.
As with many of Unk’s birthdays, this one combined “space”
(as in building a new model Launch Umbilical Tower to go with my recent Airfix
Saturn V build), Mexican food, ham radio, and a sizable portion of amateur
astronomy. Actually, the amateur astronomy got done the evenings prior to and immediately
following the big day, since I knew I’d likely be tuckered out from activating
a park for Parks on the Air and too full of Tex-Mex chow and
margaritas to even think about taking a telescope into the backyard…
Indeed, I was. We had a great time at Park US-1042, Gulf
Shores State Park, but oh-was-it-hot. We made 40 CW QSOs with my new Yaesu
FT-891 in just over an hour, and that was enough. It was crazy hot, even
under a picnic pavilion and even with the constant sea-breezes blowing. Back
home, I dumped the sand out of my Crocs, spiffed up a little, and made tracks
for Unk’s longtime fave Mexican place, El Giro’s. Many margaritas cooled
me off, and I was soon ready to tuck into my unwavering birthday fare, the famous
#13. A little TV with the felines thereafter,
and it would be night-night time. I’d hit the backyard the next eve.
If you are a long-time reader of the Little Ol’ AstroBlog
from Chaos Manor South, you know five years ago, it had almost run up on the
rocks. In 2019, there was but one new post—and not until the end of
December of that year! An accident the Rodster suffered at the beginning of ‘19,
and the lingering effects of a rather un-looked for early retirement almost
spelled curtains for the News from Possum Swamp.
I got back in the saddle as 2020 came in—I found I still
wanted to bring the AstroBlog to you—and we are now on the reasonable schedule
of one issue per month. At my age and with my physical infirmities, I don’t
travel as much as I once did. I did make it back to one star party last year and hope to do so again this fall. But… No longer traveling from star party to star
party like a demented Johnny Appleseed means I don’t have as much to tell you
about. It sure ain’t like 2016, the year I did so many events a friend of mine started
calling the annum “Uncle Rod’s Farewell Tour.”
Not being hither and yon much and having cut back on my
astro-gear addiction means the emphasis now is on observing. In part,
that is choice. I just don’t need (and don’t want to spend on) more and more
astro-goodies. In part that is necessity. Post-pandemic, there ain’t as much
astrostuff to spend on. Mostly, though, as the autumn of your Old Uncle’s time
on this world deepens to winter, observing is more important to me than buying.
And most of my observing is now right back where it began all those decades ago,
in the backyard…
And so, we’ve come to summer in Chaos Manor South’s
backyard. This is a better time for me to view the spring deep sky objects than earlier on. They are across the Meridian, into the west,
and out of the trees and the most egregious part of the Possum Swamp light
dome. Oh, there are more bugs than there were, and it’s hotter and muggier, but
at least Suzie the SeeStar, and my friendly old (don’t tell her I called her
that) ETX, Charity Hope Valentine, and I, can get a better good look at the
great galaxies of Spring.
The Number 13! |
Nota Bene: The
imaging was done over the course several evenings, and the visual work on a
couple of separate nights…
Do you have to be crazy to do deep sky astronomy in Possum
Swamp at the height of a Gulf Coast summer? No, but it helps
<badda-bing!>. Me and the girls, Charity and Suzie, did our best, but
every evening was plagued by haze and often by drifting clouds. There were nights
when it didn’t get much under 90F till near midnight. Suzie’s exposure times were limited, 30
minutes being about as long as she could often go. Sometimes, Charity and I would cool our heels for quite a spell while waiting for the sky to improve.
M3
Yeah, yeah, I know, Skeeter. Messier 3 ain’t in Coma but in nearby
Canes Venatici. So what? On any night it's above the horizon, I am gonna take a
look at the ruler of the spring globs (not that it has much competition). Honestly, I didn’t expect much. The sky was
literally milk. There wasn’t a Moon in the sky, however, so Charity and
I remained hopeful and went that-a-way.
One long ago Urban Astronomer observing run, I turned my
scope to Messier 3 from the heavily light polluted backyard of the old Chaos
Manor South. That scope happened to be my humongous C11, and I was amply
rewarded: “MAN is M3 beautiful! 127x with the C11 reveals many tiny stars
from the outer periphery of the cluster and extending right across its core.”
Beautiful M3... |
Susie? As you can see, she delivered a credible
M3, even with just 21 minutes of exposure. Despite the icky skies, Messier 3
shined on—yeah—just like some crazy diamond. Not only that, one of my favorite
little “field” galaxies, NGC 5263, shows off its minute disk in the shot. The
image, by the way, is nearly unprocessed. It’s just the .jpg that Suze sent to
my phone after she stacked it. I adjusted levels a bit, but that was it.
M64
Hokay, over to tonight’s stomping ground, Coma Berenices. I began where Urban Astronomer begins, with one of the constellation’s
showpieces, M64, the Blackeye galaxy.
When Miss Charity stopped her weasels-with-tuberculosis slewing noise
and I put my eye to the eyepiece, there the Blackeye was. Well, the galaxy,
anyway. Given the sky and the fact M64 is now getting down in the west, I
had to guess at the black eye, the dark spot near the M64's nucleus. I
thought I could detect it with the 15mm Expanse eyepiece, but that verged on
wishful thinking.
Which was really not much different from what I’d seen with
my 6-inch Newtonian and younger eyes those years ago at Chaos Manor South: “I
convinced myself I saw evidence of the black eye, but, in truth, I’m not sure
if I saw it or not. It’s incredibly subtle in this aperture in the light
pollution…” Wanna make the dark
feature pop out in the suburbs? 10-inches of telescope and high power on a
night of steady seeing is what is needed.
It should be no surprise by now that The Suzie laughed at
the minor challenge of the Blackeye. Not only is the feature starkly visible in
her images, enlarging the picture and doing some processing revealed surprising
detail. Other than cropping, the pic here is, again, purty much as it
came out of the telescope.
NGC 4565
There are some deep sky objects that never look bad.
Almost any telescope and any sky will give you something of them. That said, NGC
4565, the vaunted Flying Saucer Galaxy is a galaxy, and no other variety
of deep sky object is more damaged by light pollution. Nevertheless, one spring
eve I had a go at the ‘Saucer with my C11 downtown…
With direct vision at 127x, NGC 4565 first appears as a
round nebulous blob about 1’ or less in diameter with a tiny, bright star-like
nucleus. A little averted vision quickly
reveals the edge-on disk that forms the saucer. I’m confident I’m seeing at
least 5’ of disk on either side of the core.”
Blackeye lookin' good! |
I was afraid Charity’s answer to “Have you see the saucers?”
would be NO. My best girl surprised me though, turning up 4565 without fuss in
the 26mm Super Plössl. That said, on this eve we didn’t get farther than the “round,
nebulous blob” stage, and I’m not convinced I saw a trace of the nucleus, either.
By the time Suze set her sights on the Saucer, it was riding
high, and I didn’t think she’d have much trouble with it. I did know that the
higher an object, the more apparent the field rotation, but that isjust the way it is with an alt-azimuth mount. Anyhow, Suzie’s shot shows off the nucleus,
the bulge of the The-Day-The-Earth-Stood-Still flying saucer, and the
equatorial dust lane. Zooming in even
hints at irregularity in the dust-lane. NGC 4562 is easy to see. All that in a mere
25 minute of exposure.
M53
M53 is OK, it really is. But it definitely plays
second fiddle to M3. Its main problem is it’s a little small. Resolution
is not at all difficult, though, as I found with my urban 6-inch: “Round with a grainy, diffuse core. As I
continue to stare…I’m surprised to see stars popping out at the edges.”
That must have been a way above average night. On the
night me and Charity were given, the 5-inch MCT required 200x and some averted
imagination to pull some stars out of the soup. They were impossible to
hold steady and winked in and out like far-distant fireworks.
Charity’s rendition of M53 is pretty pleasing. 22 minutes
shows a fine spray of stars and even shows color in them. But you know
what? In some ways I prefer her 4-minute exposure. Almost as many stars, and a
more even background.
NGC 5053
Lurking near M53 is its little-buddy glob, NGC 5053. It really is Gilligan to the Skipper of M53.
It is loose, very loose, looking much more like an open cluster than a globular
(a quick glance at its color-magnitude diagram, however, shows it to be a glob).
It is not easy for any telescope in the city—I wasn’t always successful with it
even with my 12-inch, Old Betsy.
I think my NexStar 11 GPS did very well to show a few of its
stars and the vague general haze that forms the flattened body of the cluster.
But it wasn’t much, no not much at all. In the ETX 125PE? Was it there
or was it not there at all? I had a tough time deciding. Switching eyepieces, doing lots of looking, and using every visual trick in the
book—averted vision, jiggle the scope, etc.—made me decide I’d seen some hint
of this toughie.
What’s tough for my aged eyes isn’t at all difficult for young lady Suzie. Her 17 minutes of exposure gave The Blah-blah-blah Cluster (my nickname for it) form and substance. Lots of teeny stars. It made me wonder if a darker sky and a longer exposure could have made it look a little like a glob, as shots from good skies do.
And so, the hour grew late—as your aged Uncle reckons such
things now—the dew began to fall ever more heavily, and it was time to wrap up
my birthday evening backyard deep sky tour.
Soon, Charity was safely in her case, and I was again ensconced on the
couch with the felines watching Project Mercury videos on YouTube to the tune
of cold 807s for me and mucho catnip for them.
Postscript… RIP Charity?
The “Tresses” chapter in The Urban Astronomer’s Guide
goes on to seven more objects beyond NGC 5053. Why aren’t they here? Because
Charity and I did not get to observe them. Just as we finished with NGC
5053, disaster struck. I hit the mode key to select the next DSO…and
nothing happened. I mashed it again…and hieroglyphics appeared briefly on
the Autostar display before it went blank. I cycled the power, and it was
clear the Autostar was booting, just no display.
Next morning, I opened up the HC cleaned the ribbon cable
connection with Deoxit, reseated it, etc. No joy. It appears the display is
gone. I am examining my options. I could pay a lot of money for a used Autostar
on eBay that might last a while or might not. Buying a new
Autostar/Audiostar is out of the question.
As you may have heard, Meade has gone out of business
along with Orion. There’ve been no official announcements, but it’s clear
these companies, at least under their current owner, are GONE PECANS. Even if
they weren’t gone, the Autostar, like a lot of other Meade items, has
been unavailable for quite some time. Sure, I could defork Charity’s OTA and
put her on another mount… but it just wouldn’t be the same.
Miss Charity Hope Valentine 2004 - 2024. |
Friday, June 28, 2024
Issue 605: What Do I Use Now?
Muchachos, I make no secret of the fact I miss the go-go days of Baby Boomer astronomy. Which was at its height from the 1980s through the oughts or a little past that, maybe almost to the time of the plague. Like many of you then, I was almost as interested and obsessed about THE GEAR as I was about actually using it on the sky.
There were times in the decades I lived downtown at the
original and storied Chaos Manor South that collecting and dreaming about new Astrostuff
was almost my sole focus in the hobby. It was often all I could do
night-by-night. I was lucky to get out to a dark site once a month, and what I
could see from my oak-enshrouded backyard was limited to say the least.
How things have changed. It seems I am back to observing
with telescopes rather than collecting them. And that is observing in a
relaxed fashion. When you have a decent—if not perfect—suburban backyard as I
do at the new Chaos Manor South, you don’t feel as pressured to go pedal-to-the
metal every time you are out under the night sky.
But that’s not the only reason. Post pandemic, it’s no
secret there’s less of that astrostuff to buy (Taken a stroll
through the astromag ad pages lately?) and what there is is more expensive and
often backordered. There have been some interesting advances over the last few
years, nevertheless, like the rise of the smartscope and black boxes like ZWO’s
ASIAIR, both of which make astro-imaging into a new ballgame. But we no longer
wait breathlessly for the next ginormous Meade technicolor catalog
extravaganza. That sort of amateur astronomy appears to be in the rearview
mirror.
There’s also the ME factor. As in, I am a different me
than I was when I retired in 2013. When we left ol’ Chaos Manor South, all, it
seemed, would go on as it had the past two decades. I’d just transfer the contents
of the Massive Equipment Vault to the new manse. Then, shockingly, your Old
Uncle began to realize he was tired. Tired of ALL THE STUFF. Now that I
could use telescopes, it seemed I was more interested in doing that than
worrying about what, if anything, might come next. And, so, I began to thin
the telescope herd…
Tanya the Rescue Scope |
That’s a good question, Skeeter. I could go on about the
lovely APOs I still have, and the beautiful Losmandy mount, yadda, yadda,
yadda. That would be whistling past the graveyard, though. The only time any of
that gets pulled out is when I need it for a Sky & Telescope
assignment. I don’t choose to use it because I want to use it.
What do I use first and foremost? A pair of 15x70 binoculars I bought from the late (that is hard to believe) Bill Burgess twenty-one years ago. If there’s a more versatile pair of glasses than
15x70s (or so), I don’t know what it is. They offer good aperture, but also
enough magnification to keep compromised suburban skies on the dark side. Also,
they are still handholdable—if a slight pain for extended use. I have numerous
pairs of binoculars, from exquisite 35mms all the way up to 100mm giants. None
get used other than the 15x70s. The Burgess binoculars are what I will and
do use.
When I want or need to use a telescope? If I’m lazy
and/or need wide fields, the scope I grab ‘n go with is one I would have
laughed at 20 years ago. I am talking about Tanya, the Rescue Telescope. She is a 4.5-inch Celestron Newtonian with a
focal ratio of f/5.2 and a spherical mirror. She is perched on an alt-az fork
on a spindly extruded aluminum tripod, the kind I used to preach against those
decades ago. Why would your Old Uncle use a Department Store telescope? Why
would I allow one in my presence?
That is simple. When I want to see something, whether a
planet, or a deep sky object, or the latest comet, or whatever I use Tanya
because she works. The way I want a scope to work. She sits in my radio
shack/workshop of the telescopes, the Batcave, near the door and is ready to go
at a moment’s notice. Oh, she takes a little while to acclimate, but by the
time I’ve rounded-up a box of 1.25-inch eyepieces she is ready to run. When I
am done, or if the sky clouds over, or hour grows late (that is now 10pm) I can
pick her up in one hand, tripod and all, and waltz her back inside.
“But Unk, ain’t the images pitiful?” No, they ain’t.
Yes, there is a limit to the resolution of a 4.5-inch spherical mirror. At
f/5.2 one approaches ½ wave of error. But guess what, campers? At 100x and
lower her images are just fine. The Moon is beautiful and sharp, I can see the
Great Red Spot, and Saturn is the detailed wonder he always has been. She will
even go beyond, a little beyond, 100x without complaint. More than that and the
trouble is more with her little mount than her mirror.
Miss Valentine |
Of course, there are times when I want more. Specifically, a
goto telescope so I don’t have to spend my night squinting up at the hazy
suburban sky with a red dot finder when I am hunting subtler prey (which for me now is DSOs like M82, not some dadgum PGC). And one with a little more focal length to make
achieving higher magnification easier. As with the Burgess binocs, more
magnification makes the field darker and improves contrast. What spells relief?
5-inches at f/15 on a goto mount. That of course is my old girlfriend, the one
you’ve so often read about in these pages, Miss Charity Hope Valentine, an ETX-125PE.
I used to make fun of Charity’s sometimes varying goto
accuracy. Now? I don’t care if she puts something on the edge of the field
instead of smack in the middle (which she often does anyway). I am no longer obsessed by such things. Her
optics are sharp, dead sharp, and she has enough aperture to make most of the
deep sky objects I visit, the bright and prominent ones, “acceptable.” Which is
enough for me now, it seems. At any rate, as with the binoculars and Tanya,
when I want more telescope, Charity is what I will use.
Are “telescope years” like dog years or more like human years? I ain’t sure. One thing I am sure of is that Charity is almost 20 years old now. There is the chance she will let out the Magic Smoke some night. I’ve taken care of her and done any repairs she’s needed. But it could happen. If it did, her replacement would be a six-inch f/5 SkyWatcher Newtonian on a goto mount. The optics are good, the goto is accurate, and it is controlled from a smartphone, something I find handy in my old age as I get lazier and lazier. Right now, the SkyWatcher gets out under the stars when I need goto, but a little more field than what the f/15 Miss Valentine can offer.
How about eyepieces? Oh, I haven't got rid of any of them. No need to; they don't take up much room and most do get into a focuser occasionally. The same old crew is still here, ranging from time-honored Vixen Plössls to high-toned Televue Ethoses. If I needed more, I wouldn't hesitate to still buy oculars, but I seem to have what I need. Since the telescopes I use are 1.25-inch only, naturally the 2-inchers don't get pulled out often. Luckily, the Ethoses and Explore Scientific eyepieces I own are all 1.25-inch capable. "Come on, Unk. Which ones do ya use?" OK, I'll fess up. That's most often the 1.25-inchers in the old Orion eyepiece box. Those Vixen Plössls, some Expanse Wide Fields, and that wonderful König I bought at a long-ago star party.
Dang! Almost back where I started! |
Staying on the topic of what I will use, but switching gears
a mite to astro-software, there have been changes aplenty there as well,
muchachos. Yes, sometimes I just grab the Sky & Telescope Jumbo
Pocket Sky Atlas and use that to plot my journey. But I find I see more
if I generate an observing list with software. And my aging eyes do find it easier
to decipher a chart on a smartphone or laptop screen than on dew-laden paper.
So, yeah, I still use an observing planner, if not the sophisticated sort I
once did.
Back in the glorious Day, when I was decidedly more
ambitious than I am now, I’d use huge and powerful planning programs like SkyTools
or Deep Sky Planner to generate my object lists. Those are two wonderful
pieces of software and I recommend them highly if you are more hardcore than
latter-day Unk. Now? The lists I can
generate with the SkySafari app on my iPhone are more than good enough. Click
“observe,” create a new list, and start populating it with objects, all with a
few touches of the iPhone screen. No, it ain’t got the power of DSP or SkyTools,
but—soundin’ like that proverbial broken record—it is what I will to use and is
mostly all I do use.
I don’t just use SkySafari for list-making, either. I
use it for almost everything astronomical ‘round here. As y’all may
know, I’ve at least tried just about every piece of astronomy software from Sky Travel (Commodore
64) onward that has come down the ol’ pike. All the biggies. And I’ve loved
many of them and found many of them indispensable for our pursuit. Now, though,
SkySafari does what I need, does it well, and is beautiful.
I do love me some SkySafari! |
When I finally got tired of dumb old Winders and got myself
a MacBook Air M2, I thought, “Well, dang, now I can get the Mac
version of SkySafari!” Alas, the Mac page at the maker’s, Simulation
Curriculum’s, site was gone. The program was still apparently available
in the app store but had not been updated in years. What the—? I temporarily gave up the idea of SkySafari
on a laptop and loaded up the Mac flavor of Stellarium.
Then, recently, I decided to do some research about SkySafari
on the Mac. The gist of it? Seemed as how the old Mac SkySafari was dead.
As dead as the Intel Macintoshes. But that didn’t mean I couldn’t
have SkySafari for my Mac, it ‘peared. Many iOS apps now run jus’ fine
on the new Macs, the Silicon Macs (machines with an Apple M1 processor
or better). Was it possible I could run SkySafari Pro on my Apple
Computer, my M2? ‘Deed it was.
For less than 20 bucks I could download SkySafari Pro
from the Mac app store. Which I did. After it installed? SHAZAM! There
was my favorite astroware on a big(ger) screen and looking pretty—awful
pretty! I haven’t had a lot of time to play with it yet but suffice it to say
it seems to work great on the Mac, looks beautiful, and, not surprisingly,
seems to have every feature of the iPhone app (which is what it really is,
after all).
Anyhoo, there you have it. That short list is the astronomy
tools I use, binoculars, a couple of smallish telescopes, my iPhone, and a
laptop once in a while. But I’m keeping on trucking, onward and upward as they
say, whoever “they” are.
And what’s onward from here? This installment was supposed
to cover my reobservation of the objects in Coma from my book, The Urban Astronomer’s Guide. The “Tresses of
Berenice” chapter, that is. Urania had other ideas, keeping her sky
veiled down here in the Swamp night after night. Coma is sinking now, and I
hope I get a shot at it before the Gulf storms begin spinning up. Yay or nay, though,
I’ll be back here next month with more of my down-home astro-foolishness...
Excelsior.
Wednesday, May 29, 2024
Issue 604: Unk’s Yearly M13, The Quest for Simple but Good
Suzie's M13 |
“After what, Unk? Wut you talkin’ ‘bout now? Too much
Yell last night? Did you bump your head gettin’ outa bed? What?” Simple,
Skeeter: my yearly quest to image that greatest of all Northern Hemisphere globular star clusters, Messier 13. That is a
long-running astronomy ritual with your old Uncle. Like my annual Christmas Eve
observation of M42. Weather ‘n stuff conspired to make me miss the Big Glob
last annum, and I wasn’t gonna let that happen again this year; I’d get started
as soon as possible, like RIGHT AWAY.
The only question was “How would I get M13?” The last decade, the answer has been “As
easily as possible.” Yeah, some years I’d drag out big mount, SCT, computer,
and CCD and go whole hog, but those years became fewer as I hit my mid-60s.
Mucho fewer. And soon enough, the days of setting up my SBIG CCD on a C11 were
gone forever. As the years roll on, and the gear seems to get heavier and the spring
and summer nights ever hotter, I've looked for ways to corral ol’ Herc (or whatever) without busting a
gut or being a sweat-drenched wreck at the end of the run.
The first Quick and Dirty approach I took to M13 was video,
deep sky video. As y’all know, during the years of The Herschel Project, I was all about video. So, it seemed a natural to go
after M13 that-a-way. No guiding. I could even use an alt-azimuth mounted
scope. The original Stellacam (analog black and white
video and <10-second exposures) did a credible job.
The Mallincam Xtreme that followed it was better still with
less noise and longer exposures. But while I didn’t have to worry about guide
scopes and polar alignments, that was still a load of gear: scope, mount, camera, cables, monitor,
digital video recorder, etc. There was also no denying the results didn’t look
that great. Oh, the videos looked pretty good, and the still frames from them
were acceptable. But attractive? Not really. I looked for that much wished-for and sought-after
Better Way.
At about this time, quite a few refugees from the analog deep
sky video scene began experimenting with a similar imaging mode. This was
short-exposure imaging with digital cameras. CCD cams, DSLRs, you name it. The
idea was to take a bunch of short—as in 10 - 15 seconds or so—exposures and
stack them together in the usual way. I was rather skeptical of the idea,
thinking that at a minimum 2 – 3-minute subs were required for a decent image.
However, I had a camera suitable for experimentation—my ZWO ASI
120mc color planetary camera. While I could have used an alt-azimuth scope for
my testing, I chose to put the OTA on an equatorial. I figured that would
eliminate noise and other trouble from field rotation and would give the
short-sub idea its best chance at success.
And away we went. The C8-on-a-GEM setup was a slight pain,
but not too bad. Soon my old Ultima 8 OTA, Celeste, was riding on the CG5 with
the li’l ZWO cam on the rear cell. Other than that, I had a laptop set up on
the deck running the amazingly versatile FireCapture software, which is just as much at home saving single
exposure frames of a deep sky object as it is planetary .avi files.
M13? Easy as fallin’ off a log. As you can see in the image
here, M13 with the 120mc is considerably better than the inset longer exposure (1-minute subs) of my stacked Meade DSI image from many a Moon ago. I was pleased.
But I put the ZWO away and never came back to it for the deep sky. Instead, I
took to doing my yearly M13 with an 80mm APO and a DSLR. That was easy to do,
but f/6 80mm plus DSLR frame size produced a rather miniscule M13. In
retrospect, I could have gotten better images with my ZWO and the little refractor.
That has been the story the last several years. Me using a small, short refractor and a
DSLR to do the Great One. Was I satisfied with the images? No. As
above, M13 was just too small, and the 80 APO and DSLR were not well-suited for
the suburban environment. That’s where my Yearly M13 came to rest for a while, but
that was then, ladies and gentlemen. This is now.
What is different now when it comes to taking decent
deep sky images easy-peasy? Do I even have to tell you? It is the coming of the
smart telescope. I’ve talked about my little
ZWO scope frequently here—I am very fond of her. She's not perfect. Some of the
images are better than others, I’ve observed, and it’s not always clear why.
Oh, no doubt you could achieve more consistency as far as perfect stars
in every shot by downloading individual sub-frames and stacking ‘em yourself. I
choose not to do that because I am rather lazy these days and find the stacked
.jpgs Suzie delivers to my phone almost always more than acceptable.
When I thought it was dark enough to begin, I trotted out,
turned Suze on, connected to her with the iPhone, and used the manual altitude
slewing buttons (a recent addition to the app) to raise the girl’s little OTA out
of parked position. The reason for that was so I could install a dew shield I’d
purchased. Not because of dew, though. The scope’s built-in dew heater has always
kept that at bay, but I wanted to block some of the ambient light that inevitably intrudes
into a suburban backyard. I thought images would look better with minimal
processing without the gradients the neighbors’ yard lights inevitably cause.
Which dew shield? Where do you get such a thing for
the SeeStar? Take a stroll through the eBay. You’ll find a surprising
number of sellers offering dew shields and other plastic 3D-printed SeeStar
accessories. I got mine from an outfit called “West Coast Astro.” On the
plus side, it is reasonably attractive and works fine. On the minus side? I couldn’t
use it the first night after I received it; it wouldn’t fit the SeeStar. I had
to do some sanding of the barrel. Not a lot, just a little and then it was
fine. On the plus side again? The seller included a bag of Haribo gummies in
the box—just like Adrian of Adrian’s Digital Basement often receives in
his Mail Call packages… so I was placated.
Me turning on the Suze, connecting to her with iPhone, and
installing the dew shield was the extent of my night under the stars. How do I
feel about that? I’m not sure. There is certainly something to be said
about a calm and peaceful night under the shimmering stars of spring. Instead,
I spent the balance of the evening on the couch in the den with Tommy, Chaos
Manor South’s resident black cat, watching the aforementioned Adrian’s Digital Basement
to the accompaniment of cold 807s (me) and ‘nip (Tom). It was relaxing, yeah, but decidedly lacking that “romance of an evening under the
stars.”
On the other hand… An
imaging run done the conventional way is usually spent staring at a laptop
screen rather than the stars. What I shoulda done, I guess, was grab the
Burgess 16x70 binoculars and do a little bino tour while Suzie did her thing.
Next time, perhaps. And I will admit that even purely visual observing ain’t always
a picnic. Heat. Bugs. More heat. Dew. Sweat. And, when I was a young’un, the
sneaking suspicion THE VISITORS might pounce on
me as I stared into my Ramsden. In other words, some, not all, but some,
spring/summer visual observing runs are better to relive in fond memory than to
experience.
Postscript:
This past week I got Suzie out for a longer go at the Bigun.
15 minutes does produce decent images with the SeeStar but doubling that to 30
minutes makes the shots look a little smoother and more finished. Half an hour is
what I aim for when I am granted clear skies for that long. When M13 was done,
I shot M92, too, which also looked right nice.
Before shutting down, I devoted a couple of minutes to The
Turtle, NGC 6210. As I’d feared, it was pretty small in a 50mm f/5, so I cut
things short and shut ‘er down. In retrospect, I should have given Suzie more
time on the nebula. It’s possible that in a longer exposure, I could have
picked up a trace of the two ansae, the nebulous extensions on either side of
the disk. I didn’t, so all I got was a little green ball. Next time, maybe.
And that, muchachos, is one of the things that has kept me in this business nearly 60 years down the line. There is always that Next Night to look forward to...
Friday, April 26, 2024
Issue 603: My Eclipse...
Eclipse morning at Chaos Manor South. |
Ah, yes, THE GREAT AMERICAN ECLIPSE How did it play out down here in the Swamp? The night before as I sat on the couch with the felines watching a rerun of a (Bob Heil) Ham Nation episode on the YouTube, I wasn’t feeling overly excited. The weather forecast for Possum Swamp did not look good. No, not good at all: Clouds, unrelenting clouds. Maybe rain.
In fact, eclipse day forecasts had sounded lousy for weeks. Not much hope for us—nor for more than a few points west into the path of totality. That was OK; I’d long ago decided to sit this one out. In these latter days, I’m just not up for long drives and trying to find a $250-a-night room at the freaking Motel 6. Anyhoo, I planned to go to bed when I got tired, wake up when I felt like it Monday morning, prepare to teach my afternoon and evening classes at the university, and not spend much time worrying about eclipses.
Not that I wouldn’t try to see SOMETHING. I had a secret weapon. A special sort of telescope, a ZWO SeeStar S50 smart telescope. Despite the somewhat corny name, this little device is making waves amongst those interested in such things for its ability to take pictures of things in the sky—Sun, Moon, galaxies, nebulae, star clusters—with amazing clarity and to do that cheaply and easily. That, a couple pairs of eclipse glasses for me and Miss Dorothy, and that would be it for our eclipse expedition to the backyard.
As 11 came and went Monday a.m., I set the SeeStar up out back on a camera tripod, went into the radio shack, and fired up the IC-7610 transceiver. Alas, the bands were lousy. I may have worked a POTA park or two, but that was it. By the time I gave up and hit the big switch, it was after 12pm (the eclipse would begin at 12:34) and time to think about Mr. Sun, finally. Maybe. A glance out the shack door revealed good and bad. Still overcast, yeah. But… for the moment, mostly thin clouds. Shadows were being cast, and the cats were enjoying a little Sun in the sunroom. Worth a shot, I figgered.
What’s involved in taking pictures of the Sun with the SeeStar S50? Not much. Level the camera tripod. Put the scope on it. Push the power button. When the scope says, “Power on! Ready to connect!” Open the SeeStar app on your smartphone, click “connect,” click “Solar,” and the scope will unfold itself and tell you to attach the (included) solar filter. It then finds, centers, and tracks the Sun on its own.
You don’t have to stay outside with the SeeStar; once you turn on the scope, you can retire inside with your smartphone. In the SeeStar’s normal “station” mode, it communicates with your smartphone through your home network. It also has considerable built-in memory and is, yeah, a smart little telescope.
Inside, sitting on the couch with Miss D, the scope was delivering a live view of the Sun on my phone. You can just watch that. Or you can take still photos the scope will send to your phone. Or you can take videos and time-lapse sequences that are stored in the telescope’s onboard memory for later retrieval. I had intended to do a time-lapse of the whole eclipse, but it looked like the clouds would make that futile.
Just before eclipse time, though, there was a little more clearing. Oh, it was obvious we were still looking through a layer of clouds, but the Sun was brighter and suddenly I could see a missing chunk that signaled the Great American Eclipse had begun.
I went outside occasionally and looked up at Sol with eclipse glasses but could definitely see more on the iPhone. Not that we were seeing much. A little here, a little there. Just enough to tempt and tantalize. I did take some stills and a short video (posted on the W4IAX Facebook page), but they were really not much. Better than nothing? Sure. More than I’d expected to get? Definitely.
The national eclipse QSO party? The local eclipse net conducted by WX4MOB? Just never got around to either in the process of constantly staring at clouds on my phone and hoping for brief clearing so I could get an image at the maximum of this deep partial (for us) eclipse. Dorothy and I didn’t get to see that, though. 25 minutes before eclipse maximum, it wasn’t just cloudy, it was CLOUDY. I popped outside to see what I could see: NUTTIN’ HONEY. Wait. Was that a drop of rain? Yes. I shut down the SeeStar, hauled her inside, and… THE END. Time to get ready to go to work at the university.
Bill Burgess (Burgess Optical)
I've occasionally been out of the amateur astronomy loop the last few years, but I don't know how I missed the passing of Bill in 2022 (way too young at 59), which I just learned of. I have many a fond memory of talking with and observing with him and wife Tammy at star parties of yore. I do know every time I use my beloved Burgess 15x70s I shall think of old Bill...
Friday, March 29, 2024
Issue 602: SeeStar in the Lion’s Den
NGC 2903 |
In particular, “Lion’s Den” is the chapter in the book (I
often call it “the City Lights book” since its genesis was a series of articles
by that name in my old SkyWatch newsletter) concerning Leo the lion and his
innumerable galaxies. What I thought I’d do this time was turn the SeeStar
loose on those Leo galaxies and see how the little telescope would fare under
varying conditions from a typically light polluted suburban backyard.
And light polluted the backyard of Chaos Manor South is.
Oh, nothing like the back forty of the original Chaos Manor South
downtown. Here, we are on the edge of the suburban/country transition zone. It’s
not that bad. On a really good night I suspect you can pick out 5th
magnitude stars at zenith. The trouble is getting a good night,
especially in the spring when humidity in the air scatters light pollution, making
it worse. I didn’t give a hoot ‘n holler. I’d take what I could get and find
out what the ZWO could pull out of the hazy soup.
In particular, I wanted to see what the SeeStar can do more
as an “EAA” (“Electronically Assisted Astronomy”) system than the more serious instrument
some are using it for. Talented workers are doing flat-out amazing stuff with
the little ZWO. You know, the people who append information to their images like,
“Ten hours exposure with the SeeStar, processed in PixInsight.”
Leo Trio |
Now, none of that is meant to talk down Rock Mallin’s wonderful
cameras. They really are flat-out amazing. During the vaunted Herschel Project, they brought home bushel baskets of
PGC galaxies and quasars in addition every one of Willie and Lina Herschel’s
thousands of deep sky objects. But… "right tool for right job,” no?
My brief foray with the SeeStar had already shown me it was
capable of better on the more prominent objects. And not by me
downloading fits frames from the scope and stacking and processing them with
fancy software, but just by letting the telescope do the work. And me at most doing
some minor processing of the .jpgs the SeeStar sends to the phone. That is
where I am at right now for many things, campers: “No fuss, no muss.”
It ain’t just the difficulty involved in making OK-looking still
pictures from Mallincam videos, either. The other drawback to the Mallincam Xtreme,
you see, is the setup it requires. In addition to telescope and mount, I need a
computer to control the camera, a separate DVR to record the video, an analog
display for the camera, power supplies, cables, video switcher, etc., etc. I
just don’t have as much patience for that sort of thing in these latter days as
I used to. Oh, I’ll still do it, or do similar for conventional DSLR
astrophotography, but it’s obvious I won’t do it very often.
My routine with the SeeStar couldn’t be more different: Plunk down my old Manfrotto tripod in the
backyard. Eyeball level with a circular bubble level. Mount SeeStar on tripod.
Turn on SeeStar. When the little gal says (she talks), “Power on! Ready to
connect!” I can head back in the house, plunk myself down on the couch in front
of the TV with the felines, tell the scope to go to the target of my choosing,
open some cold 807s and some catnip, and let the SeeStar do the
work.
Do I miss fiddling with a telescope and computer in the cold
or skeeters to take pictures? Not one bit. Now, visual observing is
still something I like. A lot. But that is a whole ‘nother kettle o’ fish. Here,
we are talking getting nice pictures of the deep sky from suburban skies in a
fashion that encourages me to do so more than once in a blue Moon.
NGC 3190 Group |
Let’s go. If you’ve a mind to glom onto a copy of The
Urban Astronomer’s Guide and follow along, that won’t hurt my feelins none,
but if not, if you rummage through those old issues of SkyWatch, you can
find the Leo article “Lion’s Den” germinated from…
Having, as above, set Suzie up on her tripod and returned
inside, I opened the SeeStar app, turned on the little scope’s dew heater (it
was a rather humid evening just before the change to DST), and accessed the
SeeStar app’s built-in star atlas. Oh, I probably could have found my quarry
under “Tonight’s Best” on the main page, but I chose to use the nice atlas. I
searched on “M65,” and when the app located the galaxy, I told it to center M65
on the star atlas screen.
M65 was up first since, just as in the Urban book, I thought
I’d begin with Leo’s showpiece, the Leo Trio, M65, M66, and NGC 3628.
The idea was to try to frame the shot so as to include all three in one image.
I did that by moving the image format frame the atlas displays until all three
galaxies were within its border. Possible, but just barely. I mashed
“goto” on the iPhone’s screen and off Suzie went.
After Suze did some various calibration stuff in addition to
gotoing, and finally stopped, I could see despite the short exposures of the
preview mode that the little scope’s pointing (via platesolving) was right on.
There were two obvious dim smudges on the right side of the frame, and maybe
the barest hint of one on the left side. The stars in the field looked purty
sharp to me, but I engaged autofocus anyhow. The scope took a minute or so to
deal with that, and when done I had to admit them stars did look a mite
smaller. OK. Off to the races. I touched the “go” button and Suzie began
accumulating and stacking 10-second exposures.
While the telescope was doing her thing, I thought I’d
refresh my memory as to what I’d thought of the Leo Trio on that long-ago
evening when I did the observing for Urban Astronomer. As for M65 and M66:
These galaxies, and especially M66, are fairly impressive in
the C11. No core noted for M65, it’s an oval smudge of light. M66 is brighter but looks much the same. The real attraction under these skies is that both can
be seen in the same field of a 22mm Panoptic eyepiece at 127x.
The third member of the Leo Trio is substantially harder to
see than either M65 or M66 in the C11. It’s a dim smudge that fades in and out
as the seeing changes. Some hint of its strong elongation…
M105 and friends... |
I’ll let you be the judge (picture above), but it’s clear we
are in a whole other dimension here. M65 and M66 aren’t just elongated
somethings-or-others without cores. They are detailed, both their outer
regions and their centers. No, Unk don’t know pea-turkey about processing, and
has overexposed the nuclei, but yeah, detail there. Otherwise? Damn…you don’t
have to guess at spiral detail. It slaps you in the face. The “hard” member of
the Trio, NGC 3628? It could have used a little more exposure but still looks
purty awesome with that dark lane and the distinctive flaring ansae of its disk.
Yes, your Uncle is something of a Luddite, has a hard time
wrapping his mind around technology—especially involving smartphones—and is
easily impressed. But, yeah, just damn. It simply astounds me I was able
to see the Leo Trio like that from my suburban yard. In a few minutes. With a
50mm f/5 telescope. Without me having to do much of anything.
After The Good Ones, the Leo Trio, I traveled the
constellation stick figure, beginning with the Sickle, the Lion’s mane, and the
galaxies I called <ahem> “Mane Lice” in the book. The first of which was
with a sprite I didn’t find exactly overwhelming in the eyepiece, NGC 2903:
Visible but not starkly apparent in the C11. Its large disk
tends to wink in and out of view as I switch between averted and direct vision.
Averted vision seems to show a tiny nucleus at 127x, but I’m not sure on this.
After Suzie had devoted half an hour to this one, I picked
up the phone and had a look. Again, the difference between what I could see in the
simple picture and my visual description couldn’t have been starker. In fact,
that difference was more apparent here than with the Leo Trio, since NGC 2903
was higher in altitude and well out of the light dome to the east (Greater
Possum Swamp).
Lest I make all this seem like magic, it was not at all
immune from your silly Old Uncle’s fumbling and bumbling. Take the Leo Trio
image. The one shown here is actually one I took a week or two later. The
original? It looked good enough, but the bottom half was hurt by a
strong light-pollution gradient. Why?
“Oh, yeah… Shoulda turned the carport light off, I reckon.” My initial attempt
on NGC 2903 failed completely. Why?
Forgot to turn on the telescope’s dew heater. So, some things never do change
in Uncle Rod Land.
Continuing on down the sickle, getting close to Algieba, we
land on the NGC 3190 group of
galaxies. There is a bit of confustication here. The brightest galaxy in the
group is sometimes identified as NGC 3190, and sometimes as NGC 3189 with the whole group of
galaxies being referred to as “the NGC 3190 Group.” Be that as it may be in the
sometimes-baffling world of deep sky object nomenclature, I was quite taken by
prominent little 3190 and its nearby neighbor, NGC 3193, in my old 12.5-inch Newtonian, “Old Betsy” from my
downtown backyard:
This little pair is a real surprise. NGC 3190 is bright,
definitely elongated, and shows a small, stellar core. It really “looks like a
galaxy” and not just another smudge. NGC 3193 in the same field, is a typical
round elliptical, a fuzzy ball… A third galaxy, NGC 3185, should also be
present…but I’ve never seen it from light-polluted home.
Looking at the final pic Suzie Q kindly sent to my phone (if
you like, you can watch each 10-second exposure come in and be added to the
stack and see your subject getting better and better), my visual description
with the C11 was pretty right-on. While bright 3190 does offer some detail, especially in its inner
region, it’s basically that typical small galaxy with a bright elongated core.
3193? I pretty much nailed it: bright
core set in haze. What’s notable is what I couldn’t see but Miss S. could.
This group actually has a name, “The Leo Quartet.” Galaxy three, NGC 3185, is fairly prominent in my image, but isn’t that
interesting. Elongated core, oval haze. The fourth
member, which I didn’t mention at all—because I didn't see it in the C11—is NGC
3187. It could have used more
exposure, but when I really cranked up “levels” in Photoshop and made the
picture look ugly, I could begin to see its weird bent ends. It’s one of those really barred spirals that look like a
pair of connected hockey sticks.
Done with those Mane Lice, we move to the Tummy fleas and M105 and company. I’m
not sure how many of you look at this little group of three galaxies regularly,
but they deserve your time and are especially rewarding if your skies ain’t
perfect:
This trio was quite a treat… M105 is bright and round with a
stellar nucleus. NGC 3384 looks larger and dimmer than M105 and shows some
elongation. NGC 3385 is smaller and
dimmer and a little difficult in the 12.5-inch scope—it was dim enough that I
couldn’t be sure exactly what its shape was and whether or not it displayed a
core.
NGC 3521 |
How did 50mm Suzie stack up against 300mm Betsy? In a mere
15-minute exposure (the night was getting a little old and I was ‘bout ready to
tell Suze to shut down)? M105 and NGC 3384 are just as I saw them in Bets, if,
naturally, better defined. “Bright cores set in haze.” NGC 3385 is more
interesting. It’s easy to see in the picture, and, YES, shows off one of its
spiral arms. This nice galaxy needed more exposure, and twenty lashes with a
wet noodle for Unk for not giving it more, but, yeah, looks way better than
just another faint-fuzzie.
A mere degree and a quarter to the southwest is the somewhat
far-flung (40’ apart) pair of bright galaxies, M95 and M96. “Bright,” of course, is a relative thing when talking
galaxies, and both are fairly large and in the magnitude 9 neighborhood, making
them a little dicey in the city at times. Anyhoo, my look at ‘em with my 8-inch
f/5 Konus (Synta optics, natch) from the public schools’ suburban Environmental
Studies Center where I often observed revealed…
Conditions are not good and getting worse as the night wears
on… M96 is large and fairly prominent. It is obviously elongated and shows a
stellar core. M95 is considerably harder and requires averted vision at times,
but I can see it is elongated and also that it doesn’t possess an obvious
nuclear region.
So, I really didn’t see much. In the final image that popped onto my iPhone screen “No nuclear region”?! Both show impressive details. M96's bar is prominent and lovely. M95? The SeeStar shows a lot going on there, including a bright nucleus, bars coming off that nucleus, a “ring of stars” feature, and tenuous spiral arms. In addition to the two nice galaxies, I noticed a roundish fuzzy in the frame and checked Stellarium. The little guy turned out to be PGC 32119, a 14th magnitude galaxy. Good show, Suze, my girl!
I ended my visit to the Lion’s Den with what I called
“Hindquarter Ticks,” but that was really kind of a stretch, since the
destination, NGC 3521, is considerably removed from the Lion’s triangular rear
end, being located some 18 degrees southwest of Denebola. NGC 3521 is sometimes known as the “Bubble Galaxy,” but which I
christened “Sunflower Junior” because of the clumpy appearance of its disk. It is
a nice one to end on:
On this not-so-good night, I was surprised to find NGC 3521
without much of a struggle. At 220x in the C11, it is large, obviously
elongated with a stellar core, and its disk seems to occasionally give up
fleeting hints of detail, as if a multitude of spiral arms is just on the edge
of detection.
In the Suzie Girl? As you can see…the patchy nature of the disk is on display. However, my experience is that in images as opposed to visual, the galaxy looks a little less like M63's twin and more like a normal intermediate inclination spiral.
I didn’t end here, actually. One of the things I did in The Urban Astronomer’s Guide is end
every chapter with a double or multiple star. I love double stars and am glad I
did that. The choice for Lion’s Den was obviously Algieba, which I likened to
yellow cat’s eyes winking in the darkness in a low power eyepiece as seeing
changed.
Alas, I got distracted and let the sequence run on too long. 10 or 20 seconds would have been appropriate. Two minutes? The comes was buried in the glare of the primary star. Oh, well. I had a pretty portrait of golden Algieba, anyway.
Algieba in the can. One for the Road imaged. And the night a big success—given my modest goals—it was time to close down. What that involve? Clicking on the picture of the SeeStar in the app and sliding the shutdown thingie to shut-her-down. By the time I got outside, Suze had folded herself up, turned off her dew heater, and killed main power. I grabbed her and her tripod in one go, took her inside, put her on charge, and settled back on the couch where I had spent the evening. Time for a mite more TV-watching with Thomas Aquinas, Chaos Manor South’s resident black cat.
That wasn’t all. I was pretty darned happy about what The
Suze and I had accomplished (the above actually recounts three separate nights
under the sky) in pretty short order. Suzie was enjoying a nice shot of 5-volt
current, so I thought I’d allow myself a touch of the ‘Yell as my reward. Not that I’d felt like I’d done much. The scope did most of the
work. And you know what? At this stage of the game I am just OK with
that, muchachos.
Up Next: The Big Eclipse. If it’s clear. Hope it is.
Don’t want to jinx myself.