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Old 07-10-2012, 11:47 AM
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MLParkinson (Murray)
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Deep H alpha images from suburban Sydney

Here are thumbnails of NGC 6188 in Ara and NGCs 6334 and 6357 in Scorpio. The raw data were recorded using a Telvue NP127is and a QSI683wsg camera with Astronomic H alpha, Green and Blue filters. Not bad for the light polluted southern suburbs of Sydney. I've uploaded higher resolution versions to my flickr site:

http://www.flickr.com/photos/mlparkinson/8061075476/
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Click for full-size image (2012_05_29_N6357_Lobster_HaGB.jpg)
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Old 07-10-2012, 11:50 AM
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multiweb (Marc)
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It's looking very nice. Well done. How did you go with the blue and green? Much gradients?
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Old 07-10-2012, 12:07 PM
Stevec35 (Steve)
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Very impressive work Murray. The colour looks great.

Cheers

Steve
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Old 07-10-2012, 12:40 PM
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Larryp (Laurie)
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Lovely images, Murray!
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Old 07-10-2012, 02:35 PM
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MLParkinson (Murray)
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Quote:
Originally Posted by multiweb View Post
It's looking very nice. Well done. How did you go with the blue and green? Much gradients?
Thanks Marc. Because I am shooting from light polluted skies, my shots are necessarily "anemic" in broadband green and blue. I am happy if I simply record the star colours and brightest parts of the nebulas in these channels. Yes, sometimes I do record suspicious gradients, but as long as I back off when stretching, they aren't a problem. I find that processing images is a constant battle against my instinct to stretch and stretch until I pull out every last bit of useful information. I have the view that what you decide to throw away is part of what makes a quality image.
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Old 07-10-2012, 03:36 PM
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RickS (Rick)
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Nice work from light polluted skies, Murray!
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