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Old 23-08-2019, 11:49 AM
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multiweb (Marc)
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Join Date: Oct 2007
Location: Sydney
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Quote:
Originally Posted by andyc View Post
Thanks everyone for the kind comments.
Marc and Steve, sure, I'm happy to elaborate. It was my usual C14 & ASI290MM set-up, but with no Barlow in place (the FoV with the Barlow is tiny), so about 4m f.l. I recorded using ~1300x950 pixels, most of the chip, but that was only because I barely got set up in time and that was how it was set (too much messing around with other options)!

Capture was 88fps, 277 gain - this exposed Saturn pretty well, but overexposed the Moon. I had Firecapture take continuous sets of 45s IR videos (4000 frames each), but again that was because I was still using old settings. Though it was useful to make each video less huge (they were still each 4.5GB).

After the rush of capture, processing wasn't so bad
Obviously the moving Moon was going to be a problem, so I used PIPP to divide the videos into the overlapping 1000 frame blocks, each covering ~11s. On Autostakkert I set for 'surface' image stabilisation, placing the anchor over the partially-hidden Saturn (the 'planet's one doesn't work because the Moon is too bright). Once through the 'Analyse' step, I set some alignment points only on the planet, and stacked 60% of the frames, before sharpening in Registax. I did not expect them to come out anything like as well as this! With the gap between planet and overexposed Moon, I could have placed some chunky alignment points on the Moon to get that sharper (even though overexposed), but I'd processed too many of the individual blocks before I thought of that
Thanks for all the info Andy.
One thing I don't know how to do in AS!3 is to resize the green image stabilization anchor window. Also how do you restrict the alignment points to that area in automatic mode? I find it really annoying to have to deselected all the ones you don't want one at a time. You can't even drag a selection to remove them. And finally how do you get such a high capture frame rate? You're on USB3?
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