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Posts posted by astroman001
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ED80 at prime focus so 600mm f/7.5
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Keith, If you mean the strange left edge curved features, this is edge rind, a well known phenomena. It's caused by diffraction patterns from the optics. It's a real pain and hard to avoid.
Google it.
Peter
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Hi Craig, I have read somewhere that the edge rind stays the same size, so therefore looks worse on smaller disks.
Peter
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Thanks Darryl, yes not many new images or comments.
Peter
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Excellent result. Well done.
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Very impressive images. Well done
Peter
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You are correct, the 'edge rind' is a diffraction pattern and even the best imagers get it. It is affected by seeing but don't worry, it's not anything you have done wrong.
A lot of people use the smudge/blur tool in PS to reduce the effect.
Peter
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Here is my first attempt at a full 360 degree map of Mars from images taken this year. We have not had that many clear nights from the UK, so don't have that many images to choose from. I think it would be better with more images covering the 360 degs rather than having to use wider segments from each image. Not sure how to get better transition between segments. Any Winjupos experts out there have any ideas?
Peter
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Despite strong gusts of wind and jetstream overhead, the attached image clearly shows the spreading dust storm on Mars. The dust is spilling over from the Solis Lacus region on the bright limb at 10 o'clock.
I look forward to watching this storm develop and the active region rotates into view.
Peter
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even better.
Peter
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Lovely image, a nice natural feel to it.
Peter
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Great set of images. Those light marks are the start of a dust storm that is now spilling over half the planet. Well captured.
Peter
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Very nice, not over processed.
Peter
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Hi Pete, thanks. I tend to do 10,000 image runs which is about 1.5 mins. So this is 6-7 runs de-rotated together.
Peter
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Some great detail. Could boost colour saturation a bit I think.
peter
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Great image Pete, nicely processed. Getting Elysium Mons is excellent.
Peter
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Jupiter and Saturn 17th Dec
in Imaging - Widefield, Special Events and Comets
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Now less than 0.5 degree apart. A couple of images from a DSLR on an ED80 at f/7.5 and f/15
Peter