Tuesday, January 27, 2009
Chiefland Redux Redux
I could just as easily have called this one “Night of the C8.” Or “C8s Forever!” That wasn’t what I’d planned, though. When I travel down to Chiefland, which I seem to do more and more frequently of late, I like to take a fairly Big Gun as I judge such things. Either my NexStar 11 or my 12-inch Dob. Something that will really take advantage of the still-dark skies of the Chiefland Astronomy Village.
What’s a "Chiefland Astronomy Village," you ask? If you’ve been reading this blog long, you know all about CAV, as you’ve seen enough enthusiastic articles about it here. If not, well, I’ll tell ya: it’s a housing development for amateur astronomers under the relatively unspoiled skies of Chiefland, Florida (if you’ve read Pat Frank’s classic novel of thermonuclear Armageddon, Alas Babylon, just think “Fort Repose”) in the central part of the state, not far from the west coast.
Thus began a regular regimen of office visits to various MDs and plenty of lab work to go with that. All continued well year after year until the day a few weeks back when Unk’s Dermatologist mentioned the dreaded “C” word. Yep, “cancer,” but luckily with a small “c.” Not unlike a lot of folks on our sunny coast, it seemed I’d developed a minor skin cancer. No doubt attributable to those long, sunny 1960s afternoons in the pool at the Skyline Swim Club when I was a kid.
The good news was that, while something had to be done about the situation, this particular cancer was not life threatening—though damaging if allowed to progress. The “something” was an out-patient procedure that involved slicing and dicing me six ways to Sunday and, finally, stitching me back together. Things like this are new to me--almost unbelievably, I've never had any sort of "real" operation nor spent a single night in the hospital.
I felt a bit like Doc Frankenstein’s creation once Miss Dorothy and I got back to the comforting halls of Chaos Manor South, but I nevertheless had no intention of canceling my Chiefland expedition that was set to begin the following day. Naturally, Miss D. was a little concerned about that, imagining me pulling stitches out and falling apart like a ten-cent rag-doll as I loaded or unloaded a big telescope out in the middle of (semi) nowhere.
Tell the truth, after a day at the doctor’s, I wasn’t too hip to doing much along those lines meself. What then? Well, there was always my C8—a 1995 Ultima 8 OTA riding on a Celestron CG5 mount (“ASGT”). While I was a bit miffed about falling back to a C8 for a serious deep sky observing endeavor, I figured that, if nothing else, it would at least give me the opportunity try out some new software I had for the CG5. I was also curious to see how my beloved 8 and 13-mm Ethos eyepieces would work with the 8; especially with my omnipresent f/6.3 reducer/corrector on the rear cell. Maybe I might even get back to seriously tackling the Herschel 400. However, I was skeptical as to how much hardcore deep sky stuff I’d wind up seeing with Just a C8.
The 375 miles between Possum Swamp and Chiefland went by in uneventful fashion. My slicings and dicings weren’t bothering me, and the audio book I’d loaded onto the iPod, Stephen King’s new one, Duma Key, made the trip as enjoyable as any long solo journey can be. In fact, didn’t seem like much time at all had passed before I was checking into the Chiefland Holiday Inn Express and heading out to the site for gear-setup. I’ll admit the drive and the long previous day of playing dissection specimen had left me wearier than I usually am at journey’s end, but the obvious prospect of dead clear skies kept me going.
When I got to work, it became abundantly clear the C8 had indeed been a wise choice as my companion for this trip. One just ain’t that labor intensive to assemble. Plop tripod down. Place mount head on tripod and add counterweights. Perch the C8 on that, and you are done—none of which will come even close to causing most folks to bust a gut. I didn’t strain anything or say any cuss words. Up went the EZ-up tent-canopy; under that went the camp table and laptop enclosure.
One extra thing I had put in the car, mostly on a whim, was my little 66mm William Optics “Patriot SD” ED refractor. I hadn’t used her in a while, so I thought I’d give the little one her due share of photons riding piggyback on the Ultima C8. I pulled a few more errant equipment cases and the eyepiece box out of the car, placed ‘em on or under the table, and I was done. I did set up near the CAV clubhouse in case I started feeling icky and needed to sit down in a (relatively) warm place for a while.
Astro Stuff ready to go, I made my customary quick run into town for a few supplies, mainly Monster Energy Drinks (the best “astronomy accessory” I’ve discovered in a long time), and a couple of bags of Jack Links for field snacking. In the depth of winter, sunset comes on before you know it, so I had to hustle. Dropped off the six-pack of Colorado kool-aid I'd picked up for post-observing relaxing back at the room, grabbed my warmest coat (the one that allowed me to survive Bath, Maine one February), and headed back to the field.
I was also curious about the new features the GEM 4.15 build boasts. The most interesting of which is “ASPA,” the All Star Polar Alignment Procedure. Previously, the Celestron software included a simple but effective polar alignment facility: do a go-to alignment, select “polar align” in the Utility menu, and the mount would slew to where it thought Polaris should be given a perfect polar alignment. Center the star in the eyepiece using the mount’s altitude and azimuth adjusters, and the result was a polar alignment more than good enough for high-power visual observing and all but the most hardcore imaging.
How could that be improved upon? All Star brings the capability to use any (well, almost any) star in the sky as the alignment “tool.” Another plus? Following the completion of the original polar alignment procedure users were instructed to do a new go-to alignment—the mount had been physically moved. All Star reputedly made doing a new star alignment unnecessary.
How well did this new alignment routine work? Fairly well I thought. Is it better than the old one? I’m still not sure. Once you find the All Star instructions in one of Celestron’s new manuals (I used the CGEM instructions; I don’t believe the CG5 manual has been updated yet), doing an All Star is mostly easy. Finish the normal go-to alignment—I did a two-star plus four calibration stars—and decide which star to use for polar alignment. The hand control will caution you not to use a star near the eastern or western horizons, but provides no more guidance than that. I’ve heard it’s best to choose a sparkler near where the Local Meridian and the Celestial Equator intersect, so I tried to do just that. Unfortunately, early in the evening at this time of year there are no prominent stars in that area that are included in the NexStar HC’s “named star” list. So I just picked good, ol’ Beetle Juice.
Step one is to slew to the star you want to use. You can use any star in the hand control, but it’s much easier to, as above, choose a member of the “named” list. Once there, you push the align button on the HC, and scroll down to “polar align.” The rest is easy. The scope will re-slew to the same star and onscreen prompts will have you center it with the hand control buttons and press Align. Finally, the mount will initiate one last slew to where it thinks the star should be given a perfect polar alignment. When that’s done, you’ll be instructed to center up using the alt-az screws/controls (not hand control buttons). That’s all there is to it.
How did it work for me? I had no problem performing the basic procedure; it worked just as outlined in the manual. But how good were the results? I didn’t intend to do any long exposure imaging on this expedition, but I did do some unguided 30-second snapshots using my (original) Meade LPI. The results were at least as good as what I customarily obtained with the older alignment method. There’s a utility in the hand control to tell you how good your polar alignment is, and it said I was only arc-seconds away from the Celestial Pole. I was skeptical about that. There are enough variables including the quality of the goto alignment and the stars used for that to make this error report a rough estimate at best, I believe. Anyway, I hope to do further testing as the skies permit.
Anything I didn’t like or was put out about? That claim about not having to do a new goto alignment. Oh, it’s sorta true. But you will swiftly find that if you had to move the alt-az adjusters an appreciable amount, your gotos will be considerably off. The manual offers a procedure that involves un-syncing the polar alignment star and “replacing” the two go-to alignment stars with themselves. This may work very well, and I will try it soon, but I was tired and the wording in the instructions left me baffled given my somewhat muddled condition. Instead, I just hit the big (or, actually, little) switch on the mount to power down, and redid my go-to alignment, which worked fine.
What about the HC’s other features? The other major addition is a “tandem” setting. Many imagers don’t like to piggyback scope and guidescope, and instead put the two side-by-side on a “tandem” dovetail bar. I sometimes do that myself. However, the CG5 expects you to start out with the declination (and RA) axes set on the mount's home position marks so it has an idea where it is starting from. Unfortunately, turning the declination axis so the marks line up puts tandem-mounted scopes facing east or west instead of north as they must be.
Other than some bug fixes, the only other major change is that the mount now uses the current Epoch instead of Epoch 2000 (Jnow vice J2000). What does this mean to you? The mount now takes precession into account when calculating object positions. What does that mean without sending you to a freaking freshman astronomy textbook? Not much. Mainly that where the scope is pointed and where a planetarium program running on a laptop you’ve got connected to the mount says it is pointed will agree more closely. Did any of the bug fixes make any difference to moi? Not that I could tell. The mount put anything I requested in the field of the C8 from horizon to horizon, but it has always done that.
I’ve been gushing about my 13-mm and 8-mm Ethos eyepieces for months now. They have just kicked butt in my 12-inch f/5 Dob. But how would they work in a C8? Especially with the f/6.3 reducer/corrector I customarily use? I had not had a chance to find out; we’ve had one of the cloudiest winters in memory. Following my trip to the Deep South Regional Star Gaze last October, I had literally seen nothing—well, except for a glimpse or two of the Moon with the StarBlast.
Suffice to say that I used nothing but the 13 and 8 the entire time I was Down Chiefland Way, and the 6.3 r/c never came off the rear cell. My only regret? I left my Denkmeier PowerSwitch at home. The William Optics Dielectric diagonal I used was great, but I want to see how the Es do with the PowerSwitch’s reducer and Barlow. Next time.
All-in-all Thursday night was one for the books. The Chiefland skies were every bit as good as I’ve ever seen ‘em. The Orion/Monceros/Canis Major part of the sky just blazed away. Only bring-down? It was cold. Some of the coldest weather to hit this part of the state in a long while. I missed the worst of it, but Thursday night the dial thermometer under my EZ-up was nevertheless quickly sinking below the “32” mark as the night grew older.
The cold and my weariness—the result of my medical trials and the drive down, I guess—had by midnight conspired to make me admit I was ready for motel room/heater/cable TV/Rebel Yell. Finding nothing on but infomercials by the time I got back to the Holiday Inn Express, I hooked up my portable DVD player and watched one of my fave star party films, The Devil's Rejects. Why is that a star party film? Because that's just the way Unk felt at the end of the notorious '97 Texas Star Party, which was held in Leakey, Texas instead of wonderful Prude Ranch. But that, muchachos, is a story for another Sunday.
Night Two turned out to be everything I'd hoped for. There were some lingering cloud banks at Sundown Friday, but they drifted off—for a while at least—and I set to work with a will. My goal in addition to checking out the new version of NexRemote (v1.6.24) was to continue running the Herschel 400.
NexRemote’s GEM 4.15 firmware worked just as well as that of the “real” hand controller. No reason it shouldn’t have—it is the real hand controller; just executing on a laptop PC. If you're a fan of this blog, you know how much I like NR. If you haven’t tried NexRemote yet, all I can say is the things it brings to Celestron mounts and scopes make it well worth dragging a laptop into the field. Its ability to make use of a wireless gamepad/joystick as your hand control is probably my favorite perk. I’ve long wanted a wireless HC, and I much prefer a joystick to the "real" hand control's buttons.
That ain’t all the good stuff concerning NR, though. It will, for example, allow you to use any NMEA capable GPS receiver (like the 20 dollar one I scored at a local hamfest) as your mount’s GPS receiver. It also provides a tour-building program that will allow you to generate lists of objects and slew to them with a couple of gamepad button pushes. There’s a lot more to NexRemote than just these things, and if you are interested, as you should be, take a stroll through the archives of this here blog for an entry that’s all-about-NexRemote.
Yeah, NR was kickin’. But what was really kickin’, and what I had forgotten could be kickin’ was the C8. In these latter days an 8-inch SCT is often looked upon as a small and rather plebian scope (oh, how attitudes have changed over the last 30 years). Everybody has a C11 or a C14 or a big Meade or an even bigger Dob. Why? Because we can. Yeah, aperture is good. Aperture Always Wins. All things being equal. But all things ain’t always equal, as in my case here, where a C8 was all I could handle. The question, then, is, “Can you see much with an 8-inch SCT?” Yeah, we would have laughed at this one 30 years ago, when a C8 was, we thought, a DEEP SKY POWERHOUSE, but today it is a question I hear asked frequently by novices.
Friday night at Chiefland reacquainted me with what a “lowly” C8 can do with good skies (and, of course, good eyepieces). I was amazed. Truth be known, the Herschel 400 is not that hard. Most if not all its objects are supposedly in range of a 6-inch--or smaller--telescope under good skies and operated by an experienced observer. And yet…we do tend to think of these small galaxies, obscure open clusters, and dim planetary nebulae as somewhat tough, and I guess many of them really are.
The C8 laughed. With the help of SkyTools (2) running on the laptop alongside NexRemote, I clicked my way from one H400 deep sky sprite to the next. Wee dim galaxies in Cancer? No problem. Open clusters best described as “not well detached”? Easy. Mag 13 planetaries in weird places like Camelopardalis? BAM! Many showed considerable detail, for God’s sake.
My favorite object Friday night, though, was one of the few showpieces I allowed myself after my Herschel work was done, M37. This gorgeous open cluster in Auriga was just indescribable. At times it looked almost like the south’s great globular cluster, Omega Centauri, in the 13 Ethos. At other times, it assumed weird shape and substance. One time I found myself seeing the central triangular area of the cluster as the head of a raging bull. M37’s red central star forming its baleful eye; the whole thing a miniature Taurus.
I’d be remiss if I didn’t mention how well my even smaller scope, the WO 66SD, did. As ED refractor prices have come down to levels even the cheapskates among us—like me—can embrace, I’ve finally made friends with refractors. But mostly for imaging, not visual work, and rarely from dark sites. I’d piggybacked the 66 on the C8 mainly as an aid to spotting some of the H400’s large and undistinguished clusters, and it did yeoman duty there. But it did more.
When I had M37 in the C8, and had gawked at it for quite a while, I finally thought to see how it looked in the little feller. In a 16mm Uwan, the huge field was amazing. The multitudinous stars were a glittering hailstorm, and the cluster really did look like a loose globular. M42? Not only was I seeing all the good stuff up and down the sword, the Great Nebula wasn’t just the fuzzy spot I’d expected, but had all the form and substance you expect in a larger scope. As the night wore on, I found myself looking through the refractor almost as often as the C8.
Whatever I looked through, I just kept on looking and looking, sucking down another energy drink and firing up another handwarmer pack when the flesh became weak. In the end, it was Ma Nature, not my middle-aged bod, that called it quits. Around 1 a.m. ground fog began to roll-in and the dew just got heavier and heavier. This is not uncommon for the area this time of year, and I dealt with the dew by cranking my Dewbuster to “10” (degrees above ambient) early in the evening. Not much you can do about fog though unless you have an X-ray telescope. I took a break and moseyed around the field annoying my fellow club members for a while till it became evident things would not get appreciably better. Thence to the Camry out on the access road for a quick trip back to town after a truly illuminating night.
The dénouement? The weather dudes had been promising clouds for a couple of days, and they finally got their way on Saturday. By mid-afternoon the suckers were rolling in. I passed some hours working on the blog and answering my always copious email while waiting to see what the weather would do. Didn’t want to be too hasty. I headed out to the CAV about 5 p.m., just as it began to drizzle in town.
Onsite, I was still unsure. Pack up or not? Yeah, mostly gray, but not even sprinkles, and there was some blue to the west. “Wait. Was that a drop of rain?” I finally conceded there was little chance of doing any observing Saturday night. And there didn’t seem much point in waiting till morning to load up. That would just mean I’d be wrestling wet gear. Y-u-c-k.
To the amazement of my friend Tom Clark and another onlooker, I had scope and astro-junk back in the Camry and was ready to roll in less than 30-minutes. One of the joys of a C8 is that not only does it save your back, it takes up little room in the vehicle (my OTA and CG5 head travel in one large Rubbermaid-style container), and is quick to get on or off the field when the weather gods change their minds. All done, I considered pointing the Toyota toward I-10 and home, but it was past 6 p.m. already, and after consulting with Miss Dorothy via cell phone I decided it would be best to spend one last night in the motel and get a good night’s sleep and an early start.
I was a little disappointed I didn’t get my trifecta, but two nights had at least partially satisfied my deep sky hunger. A final stroll around the field, a little shooting of the breeze with my buddies, and it was time to go back to the motel. Another Chiefland Tear (as Miss D. calls my deep sky safaris) was over. I ruled it a success. 40 more Herschels in the bag, a good check-ride with the new Celestron software, and, most of all, renewed respect for the telescope I’ve loved more than any other over the last three and a half decades. The wonderful—and powerful—C8.
I happened to be rereading this post the other day, and was struck by how much things have changed in eight years. Today, the old Ultima 8 OTA has long since gone to live with a new owner. I had accumulated four C8s over the course of the 1990s and 2000s, only used my most recent model, an Edge 800, and decided the excess telescopes would be better off with someone who would actually use them.
How about the CG5? It just kept on going, and going, and going. I finally replaced it with a Celestron AVX mount in 2013, but still used it occasionally for a couple of years thereafter before selling it—and I understand it is still performing well for its new owner a dozen years after I bought it.
Other things changed in my observing setup, too. I haven’t used NexRemote, which I loved so much, in a long while. It was never updated following the release of the AVX, and while it works with that mount, it can’t take advantage of the GEM’s new features. The AVX, my single remaining Celestron/Synta mount, has now, by the way, been relegated to backup status itself with the arrival of a new Losmandy GM811G.
This was the first observing run where I really buckled down with the Herschel 400, though I'd begun chasing them more seriously the previous October. That led to me eventually deciding to tackle not just the Herschel 2, but the entire 2500 object list, which I finished in 2012.
Otherwise? Chiefland (the town) changed and so did I. The Holiday Inn Express I'd stayed in so many times over the years beginning in 2003 devolved into a rather déclassé Days Inn, and the Best Western I occasionally visited became a somewhat icky Quality Inn. Me? My days of yucking it up with Rebel Yell after an observing run are long behind me. An occasional glass of red wine before bed is more like it now.
It’s been quite a while, going on a couple of years, since I’ve been to the Chiefland Astronomy Village. Why? Well, I understand there have been quite a few changes lately—on top of the changes brought on by my friends Tom and Jeannie Clarks’ departure for the southwestern deserts. I’m not a big fan of change, and am waiting to see how things pan out.
I am also still slightly put out over my treatment at the 2015 Chiefland Star Party. I was a scheduled speaker, was cancelled on short notice after I’d done a lot of work on my presentation, and I was lucky to get comped for my registration (motel and gas were on me).
Couple that with some encounters with one member of the previous club administration, who called me up at 7 a.m. one morning after a Chiefland trip to whine that I hadn’t left a large enough “donation” for one weekend’s CAV attendance (said donations being on top of a new and substantially increased club membership fee).
The main reason, though, is I’ve got lazy. When you can image from your backyard as I can now, there is not quite as much impetus to drive six and a half hours to the CAV. I still miss the old Billy Dodd Observing Field sometimes, though. I hope to be back someday, hopefully after things settle down and, perhaps, wiser heads prevail.
All in all, looking back on this entry from today’s perspective, this was a classic CAV run. No, I didn’t observe as many objects as I often did at the height of the Herschel Project, but I saw plenty, and I saw them in relaxed fashion, something I tend to value above all else of late.
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Good one! You mentioned fishing, Jack's Links, and "Alas Babylon" all in one article. All things I like very well. I still fish a bunch, buy the Links at the truckstops, and still have my original copy of the book.
You ever read "Farnham's Freehold"?
You ever read "Farnham's Freehold"?
I probably read Farnham's the first time when I was about 10 or 11. When I've reread it in recent years, though, I must admit some of it seems a mite weird. But don't tell Miss Dorothy I said that. SHE IS A -HUGE- HEINLEIN FAN. LOL
I had a question about the 6.3 reducer. I have one for my C8 that I got with the intention of using for AP work but never got around to it. I didn't think about using it for visual. What is the net result? It reduces the focal length of the telescope, so the magnification would be less but the field of view would be wider, right? Would it work well with a DSLR for some AP as well?Post a Comment
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