D_talley
Carpal Tunnel
Reged: 07/07/05
Posts: 1750
Loc: Richmond VA
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Took this last weekend. Got 10 x 5 minute exposures before the moon woke up. Celestron 102AZ scope. Canon Unmodified 10D, 800 iso on a G11 mount guided with PHD. Stacked in Deep Sky Stacker with Sigma. This is much better than the last time I tried it.  I hope to get out this weekend and get more time on it.
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Dwight
Antares 105mm F/15
TEC 140 APO #74
Meade LX200 14 OTA
Meade LX200 12 OTA
Intes Mk-67
AT12IN
Orion 12.5 DOB
SBIG ST2000xm
Celestron C8+
Celestron 102AZ
Losmandy G11 Gemini
Losmandy G8 Gemini
Telescope Drive Master TDM
Canon 350D full spectrum mod,Canon T2i full spectrum mod
Hyperstar
QHY5 Guider, ST-4 Guider, STV Guider
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clitherowclan
Pooh-Bah
Reged: 02/23/05
Posts: 1028
Loc: Fife Scotland
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I think that's a great shot. Forgive me but I had to have a bit of a play with the jpeg. The colour balance is now probably all wrong and its a bit grainy but that would be cured by adding (a lot) more subs and also by working on the original but it shows your setup is a really good one to start with. I look forward to more.
Cheers, Alan C.
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Scottish Astronomer, Firstlight Instruments 10 inch F6.3 Newtonian, SkyWatcher MN190P Mak-Newtonian, WO66 and ED80 Apo on driven CGEM. Various cameras including Atik314L and EOS500D.
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DaveD
professor emeritus
Reged: 03/03/06
Posts: 691
Loc: Santa Cruz, CA
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That looks real good, especially for an ummodded camera and less than an hour exposure time. With another couple of hours it'll be sensational.
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Dave
WO ZS 110, Celestron Classic C8,
Orion Skyview Deluxe 8, AT-66
Losmandy GM8
Canon 350D(modded), Minolta 5D, Celestron Neximage
Dave's Astrophoto Page
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s58y
Postmaster
Reged: 12/12/04
Posts: 6505
Loc: Eastern NY
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Nice -- The Horsehead is tough with an unmodded DSLR, but you can see it clearly in this shot. Also, you managed to avoid the usual blue halo around Alnitak.
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Hutech 500D/T1i, 550D/T2i, DMK21AU618, SBIG ST-402 autoguider
SV80S, TV102iis, EdgeHD 800
Lenses: 800mm, 180mm, 135mm, 105mm, 85mm
AP900, Barndoor tracker
http://www.flickr.com/photos/s58y/
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Mr. Mac
super member
Reged: 09/26/05
Posts: 146
Loc: Henrico Co., Va.
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Nice shot, Dwight. I tried this with 3 minute subs and my Horsehead looked more like a pony. I have a clunky old wedge that makes drift alignment a real challenge  so I shy away from any exposures longer than 3 minutes....but this object is near the celestial equator so I may have a go at it this weekend.
Nice image...like the above post says, you managed to avoid the blue halo around Alnitak...is that Celestron an Apochromat?
clear skies..
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Mac
8" Lx200GPS
WO Megrez 80FD
WO Binos
Canon Rebel XT
Unbridled enthusiasm
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D_talley
Carpal Tunnel
Reged: 07/07/05
Posts: 1750
Loc: Richmond VA
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Thanks everyone. The scope is a $150 4 inch achro without any filters. I got my IDAS LPS the day after this shot. The first time I tried this target, I had a donkey instead of a horse. I hope to try it with the filter this weekend.
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Dwight
Antares 105mm F/15
TEC 140 APO #74
Meade LX200 14 OTA
Meade LX200 12 OTA
Intes Mk-67
AT12IN
Orion 12.5 DOB
SBIG ST2000xm
Celestron C8+
Celestron 102AZ
Losmandy G11 Gemini
Losmandy G8 Gemini
Telescope Drive Master TDM
Canon 350D full spectrum mod,Canon T2i full spectrum mod
Hyperstar
QHY5 Guider, ST-4 Guider, STV Guider
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