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Old 24-01-2009, 12:37 AM
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gregbradley
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Join Date: Feb 2006
Location: Sydney
Posts: 18,185
Quote:
Originally Posted by Bassnut View Post
Excellent image Greg, exceptional detail, especially on the Alnitak. ummm, just a tad noisy for 15 hrs though. Im being picky, but your in the league now where thats allowed . I suspect processing now will now give you that last extra mile, the hardware is certainly about as good as it gets .
Thanks Fred. Ha wasn't that flash for 7.5 hours. Not sure yet about Ha performance of the camera. I remember imaging with the RCOS 12.5 inch and an STL and it was also extemely dim but Marcus seemed to get better Ha response than I did although his was wider field.

Another couple of hours would certainly get rid of any remaining noise.
Especially with the clear filter which seems to be a winner.
Greg.

Quote:
Originally Posted by Ric View Post
Wow, amazing stuff Greg.

Talk about value for money.
Thanks Ric.

Quote:
Originally Posted by Peter Ward View Post
Greg,

Been away for a bit, hence I missed this one. A fine image to be sure, but I agree with Fred, low surface brightness objects need fast optics + serious aperture.

Some of the stars are a little weird in shape as well (minimum filter? selective processing? ) ..but we are in *really nit-picky* territory here...

That said, with this is a really superb piece of kit, and clearly capable of producing images most punters would kill for.

Well done!

Peter
I did use a version of luminance I did not intend using due to not labelling the file clearly enough. This had a bit too much deconvolution. I redid another version with the luminance I did intend and the stars are better. In the crop though the stars are fine.

The scope is a work of art by Yuri and his Ukrainian (I think or Russian) opticians.

Greg.
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