Antares_Paul Posted June 7, 2013 Share Posted June 7, 2013 (edited) Not much of a night sky now so had a play with the Ha filter I bought ages ago and has so far remained unused. I tried processing this image in 2 different ways. Firstly I processed as I would with RGB then stripped the red channel. Secondly I stripped the red channel from the .fit file before processing. I found more detail came out using the 2nd method; 3x1200s ISO800. ED120DS-PRO/0.85FR/Canon 450D/Astronomik 12nm Ha filter. Help/comments appreciated. Regards. Edit: Image tweak now I'm awake Edited June 7, 2013 by Antares_Paul Link to comment Share on other sites More sharing options...
+RonC Posted June 7, 2013 Share Posted June 7, 2013 Like that! Very good contrast, just wait till it gets dark at night again!! Link to comment Share on other sites More sharing options...
dawson Posted June 7, 2013 Share Posted June 7, 2013 Very nice. Have you cropped the original image much, or is this pretty much how it was framed? James Link to comment Share on other sites More sharing options...
Guest Eddy Posted June 7, 2013 Share Posted June 7, 2013 Very nice Lots of contrast as Ron says Link to comment Share on other sites More sharing options...
Antares_Paul Posted June 7, 2013 Author Share Posted June 7, 2013 Cheers Ron. Yep looking forward to Winter already (I can't believe I just typed that). James, it's pretty much full frame apart from a very slight crop to remove a border generated in stacking. Reduced in size to prevent scroll bars. At full size it's VERY noisy. 20 minute subs in a Summer sky doesn't quite work with an uncooled DSLR. As I said, a new area for me. Thanks for looking. Regards. Link to comment Share on other sites More sharing options...
Guest billywhizzzzz Posted June 7, 2013 Share Posted June 7, 2013 Fantastic pic . Was that prime focus ? Link to comment Share on other sites More sharing options...
Antares_Paul Posted June 7, 2013 Author Share Posted June 7, 2013 There's a 0.85 focal reducer in there Steve. The standard ED120 focal length is 900mm [F7.5] but is reduced to 765mm [F6.4]. Not the ideal scope for larger nebula regions. Regards. Link to comment Share on other sites More sharing options...
Guest billywhizzzzz Posted June 7, 2013 Share Posted June 7, 2013 (edited) Just wondering how I would go on with my C8 sgt and pentax Kx , also a 6.3 focal reducer hmm one wat to find out , in any case I love the pic, think you have really done a wonderful job . Edited June 7, 2013 by billywhizzzzz Link to comment Share on other sites More sharing options...
+Graham Posted June 7, 2013 Share Posted June 7, 2013 Paul that is one stunning image. :2thumbsup: Link to comment Share on other sites More sharing options...
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