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  #21  
Old 10-05-2015, 11:40 AM
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dvj (John)
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Originally Posted by gregbradley View Post
Thanks Marco. High praise. I probably will add more data to this next trip so I can check the black point. The current histogram shows it as OK but perhaps bit got clipped along the way. Its easy to do.

Greg.

Your sky backgrounds are generally very black Greg. I can't say they are clipped, but right on the edge.
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  #22  
Old 10-05-2015, 01:46 PM
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Your sky backgrounds are generally very black Greg. I can't say they are clipped, but right on the edge.
Yes I have to watch that.

Greg.
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  #23  
Old 10-05-2015, 06:07 PM
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Beautiful image Greg, really nice colours in this one.
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  #24  
Old 10-05-2015, 06:19 PM
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Beautiful image Greg, really nice colours in this one.
Thanks Rex. I was definitely happy with this one. Especially for the relatively low number of hours it took.

Greg.
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  #25  
Old 11-05-2015, 09:44 AM
Placidus (Mike and Trish)
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Greg, that 25 hour shot is seriously deep. We've not done it with the Aspen, but an older STL11000 shot with 11hrs luminance plus colour on the 20" does not show anywhere near as much of the outermost spiral arm. Well done.
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  #26  
Old 11-05-2015, 11:09 AM
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Greg, that 25 hour shot is seriously deep. We've not done it with the Aspen, but an older STL11000 shot with 11hrs luminance plus colour on the 20" does not show anywhere near as much of the outermost spiral arm. Well done.

Yes that arm is pretty faint. There is also some CDK17 data in that - about 5 hours. So its 4 scopes and 4 different cameras over 7 years!

I do like NGC6744!

Greg.
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  #27  
Old 11-05-2015, 11:53 AM
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rustigsmed (Russell)
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nice work greg, I too am a fan of this galaxy, awesome work with the outer arm too!

Russ
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  #28  
Old 11-05-2015, 03:08 PM
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nice work greg, I too am a fan of this galaxy, awesome work with the outer arm too!

Russ
Thanks Russ.

Greg.
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  #29  
Old 12-05-2015, 10:31 PM
Ross G
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A great looking galaxy photo Greg.

Impressive detail!

Ross.
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  #30  
Old 13-05-2015, 08:22 AM
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A great looking galaxy photo Greg.

Impressive detail!

Ross.
Thank Ross. I was happy with it and how quickly the image built up. Also how well it takes processing. The signal to noise ratio seems a lot better than normal.

Greg.
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