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Old 25-09-2009, 11:51 AM
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Quark (Trevor)
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Join Date: Apr 2008
Location: Broken Hill NSW Australia
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Quote:
Originally Posted by Jusher View Post
Hi and thanks for the suggestion - I'll try backing off the time to 40 seconds per channel. Additionally I can try manually rotating the channels to compensate for field rotation, and then align on planetary features. And hopefully the EQ6 would work OK with this big tube

Regarding the fringing I've been experiencing at 60fps, I'm not the only one to find this a problem -and I keep my gamma at 100 and the histogram properly exposed. I get almost no fringing at 30 fps. Here's a link where someone else is discussing the issue with a support engineer at the Imaging Source forums: http://www.theimagingsourceforums.co...d.php?t=322135. Note the comment at the end of the thread from the engineer ("I think these ghost images are a side effect of this high frame rate. I do not think, it can be avoided, since we do not know, how these ghost images are created in the CCD.")

Jonathan
Thanks for the link Jonathan.

The only time I have experienced this onion fringing was due to having the gamma setting to high.

I have never felt the need to capture at more that 30 fps, I have a 16" f4.5 Newt so have absolutely no problem filling my histogram and recording enough frames in a short enough period

Some of the best planetary images ever recorded have been achieved on the DMK 21.

Cheers
Trevor
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