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Troubleshooting FAQ | Problems? PM a Red or a Green Gu.... uh, User
drksky
super member
Reged: 09/01/09
Posts: 115
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After a month of clouds, we finally got a clear night that stayed that way and I was able to get out with my new AT8RC. After some collimation issues (it really is fussy and shows if it's just a hair off) and some guiding issues (still trying to get on my feet there), I was able to get 13 minutes of subs on the Perseus Double Cluster:
AT8RC
Stock 450D
ST80 Guider w/Starshoot Autoguider
CG-5 ASGT
13 X 1 min, 2 darks
DSS, Small color tweaks in PS CS4
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Tony C
AT8RC
C6-R
CG-5 ASGT
ST80 w/StarShoot Autoguider
Canon EOS 450D (Stock)
The Drinking Bird
Edited by drksky (10/20/09 03:43 AM)
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yock1960
professor emeritus
Reged: 06/22/08
Posts: 979
Loc: SW Ohio, USA
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Hey Tony,
Congrats on the AT8RC! A very popular scope right now.
Looks like your guiding was ok to me. You've clipped the black point (left hand side of the histogram) which is probably why the background looks a bit dark.
I usually go 30 x 2 minutes on clusters. I've found it works well with my setup (66mm APO), but maybe with your 'lightbucket'  , you could go even shorter if the stars are saturating. In any case, more subs would probably be better.
If you don't know or don't already have them, Noel Carboni's Astronomy Tools action set, is one of the best things I have invested in yet ($20) and helped me from the minute I got them.
Steve
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LXD75 GEM
Orion Starblast 4.5" Imaging Reflector
William Optics Zenithstar 66 SD APO
Meade DSI II OSC
Meade DSI III OSC
Orion Starshoot Autoguider
Televue Powermate 2.5x
Discovery 6" Dobsonian
Nikon Action Extreme 10x50's
Gallery
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drksky
super member
Reged: 09/01/09
Posts: 115
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Well, you don't see my guiding problems cause I culled the bad images 
I was having problems with PHD (SSAG) running away after about five minutes. I really think I've got an overabundance of dec. slop. I need to read up on PHD to see what the numbers in the status bar actually mean... 
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Tony C
AT8RC
C6-R
CG-5 ASGT
ST80 w/StarShoot Autoguider
Canon EOS 450D (Stock)
The Drinking Bird
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drksky
super member
Reged: 09/01/09
Posts: 115
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Did a little image tweaking. The earlier one I was processing at 2am and was a little bleary-eyed. I think this one looks much better.
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Tony C
AT8RC
C6-R
CG-5 ASGT
ST80 w/StarShoot Autoguider
Canon EOS 450D (Stock)
The Drinking Bird
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s58y
Postmaster
Reged: 12/12/04
Posts: 5503
Loc: Eastern NY
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Both are very nice, with good star colors.
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Hutech 30D, SBIG ST-402 autoguider
SV80S, TV102iis
Old camera lenses: 800mm f/5.6, 180mm f/3.4
AP900, Barndoor tracker
http://www.pbase.com/s58y
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Orion_PKFD
sage
Reged: 01/22/08
Posts: 426
Loc: Vieira do Minho, Portugal
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You will need to take flats because I got vignetting. But there is very good data in there. Congrats!
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André Gonçalves
http://astro-andregoncalves.blogspot.com/
SkyView Pro 8" EQ
Dob 4,5" (ATM)
60mm achromatic refractor
10x50 WA
10x25
SPC900NC
DSI
Canon 1000D
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