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FORUMS Photography Talk by Genre Astronomy & Celestial Talk
Thread started 17 Dec 2010 (Friday) 02:21
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DSS results are TERRIBLE - Can you help?

 
swag72
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465 posts
Joined Nov 2008

Olocau, Spain
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I spent all of yesterday running my Orion nebula subs through DSS. It has been a nightmare and I don't know if anyone can shed any light on what I'm doing wrong.

I used 16 bit tiffs - about 60 of them at varying exposure times - and darks for the same exposure times. I didn't use flats. I followed the tutorial by a.s.i.g.n on this site. The results?

The histogram came out so far to the right, there was nothing I could do to bring it back and maintain any nebula detail at all. I also had TERRIBLE vignetting - When I looked at an individual sub and pushed the curves up to look, the vignette was not bad at all. In the end result it covers most of the frame.

So I am now putting my raw date through - see how that goes. This is the 2nd time I have used DSS, I used it for M45 a couple of days ago and it went well, I have done nothing different. If only the histogram more to the left to start with I am sure I could go from there.

I would be so grateful if anyone could offer some ideas!

Dec 17, 2010 02:21

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Jeff
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42° 34' N 87° 55' W Kenosha, WI
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I feel you're pain. I had fits when I started stacking in DSS. My only input is that there's only so much that can be done in DSS and then you need to do some processing in something like Photoshop. It's amazing what levels and curves can do. Keep at it!

Dec 17, 2010 16:03

Jeff
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Astrophotograpy: Meade 10" SCT, AT8IN, Orion EON 110mm APO, Coronado PST, Atlas EQ-G to keep it all off the ground.
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swag72
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Senior Member
465 posts
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Olocau, Spain
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Cheers Jeff - I found an excellent tutorial on the net and also learnt that putting raws through DSS was MUCH better than putting the tiffs through.

I have also learnt to not bother doing any adjustments in DSS and just use Photoshop.

There's lots to learn that's for sure.

Dec 18, 2010 04:38

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Jonathan.kichizi
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Tucson, AZ
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I saw your results on your flickr page-- looks great!! Can you share what you did? Thanks for the notes about RAW files being better than TIFFs. If you did a full write up- from shooting to final product, I would love to read it.

Dec 18, 2010 14:18 as a reply to swag72's post 9 hours earlier.



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swag72
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465 posts
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Olocau, Spain
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I am such a complete newb that I haven't even got a set way to set up my scope each time, let alone process images!!

This linkexternal link was absolutely brilliant, and the curves tutorial is what I followed to get the results I did.

Hope that helps.

Dec 19, 2010 11:08

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DSS results are TERRIBLE - Can you help?
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