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Mars was taken at night between 20:57 and 22:29 UTC. Equipment used: Celestron SCT C8, Barlow 2x, GSO #29 (dark red), ASI120MM Mini, HEQ5 mount.
Animation was prepared from 20 images with drizzle 150% (the best 10% of frames from 60-second movies):
One of the best images from 21:55UT:
By Tenor Viol
I am currently waiting for a nice shiny 100mm refractor to arrive... to put on my new HEQ5 PRO.
Meanwhile, lurking in the garage in a case that hasn't been opened in over 20 years is a 40 years old this year Celestron C8 - the original fork mounted type in orange.... I'm suspecting that in order to get say a long dovetail plate to fit to it will require some modifications? At 2,000mm f/10 it will be good for lunar and Jupiter and Saturn.
Has anyone any experience of doing this with the old style C8? It's fair to say I either lack the requisite skills or equipment to do anything more complex than screw/bolt things together, is if it is more than that, suggestions as to who could carry out any necessary modifications would be welcome. I realise DEC balance will be an issue on a GEM with an SCT...
(In case you're wondering... back in 1980 when I bought it, there were no such things as dew straps, or much of anything else and I just found it not easy to use, eyepieces were ferociously expensive and I was a lowly bank clerk at the time, then I bought a house....).
Celestron C8 XLT + extras and SkyWatcher Star Travel 80 (ST80)
I have a Celestron C8 with XLT Starbrite coatings. Will include the full length base plate, both visual and imaging backs, scope rings, front 8" end cap and the finder scope with it. No box I'm afraid. Optics are good and clean, focal length is huge - 2300mm from memory. This lot would cost close to £1300 new and one with less spec went for £750 on fleabay recently. Might be interested in a part exchange or will let it go for £450 collection only.
Also, I have a SkyWatcher Star Traveler 80 - good optics, used as a guide scope - just the scope itself (does not include the barlow in the photo) - now including dovetail bar and scope rings looking at around £50 for it.
I have decided to save up for another refractor, WO, Equinox or even toward an Esprit. However, I would also consider p/ex for an Intel NUC and/or Pegasus Astro Pocket Powerbox.
Please excuse some of the colours - I used my astro modded 6D which was in the observatory so the "nice" purple is actually black !!
Both these are collection only.
I'd say it's been about 6 years since I last posted on this forum, oops 😁.
Anyway Ive been looking for a new scope something with abit more punch than the skywatcher 130m I have been using and came across this beaut on eBay, I won the auction and picked it up yesterday. The guy was selling it on behalf of an elderly gentleman man who couldn't use it anymore, (it's been sitting in an unheated garage for many years 😩) he had no idea on the make or model other than its a c8, I did a bit of research and found its a c8 super polaris.
The mount has both RA and Dec axis motors but I have no way to power them, the action of the mount is buttery smooth. However I plan to mount this on my HEQ5 anyway...
The scope its self seems to be in good condition some minor scratches on the tube but nothing too alarming, no finderscope or dust cover but I plan on adding my own finder anyway. The focus is super smoothe and can't see much if any image shift in use (not tested on a star yet due to preverbial clouds)
My main concern is as its been in an unheated garage for some considerable time and there seems to be some minor mildew on the primary which I plan on cleaning... when I feel brave enough..
I don't think the secondary screws are original, should be Phillips head? Tested on a small light down the garden and it seems to be well collimated, but does have a small amount of mildew on it
I don't recognise the mounting bar, I would like to swap it to a vixen style bar so I can mount it on my HEQ5 maybe this?
Anyway that's where I am with it sorry its been so long since I last posted, I hope to be a tad more active on here.