Thread: Mars 1st April
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Old 02-04-2012, 03:15 PM
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asimov (John)
Planet photographer

asimov is offline
 
Join Date: May 2005
Location: Bundaberg
Posts: 8,819
Quote:
Originally Posted by Poita View Post
Really lovely work as usual John.
Any chance of a rough overview of your Mars processing regime? I do okay with the other planets, but fine detail on Mars always eludes me, I'd like to know if it is my capture or my processing that I need to improve.
Thanks Peter. At capture time, I'll preview a lot at different scales until I think it's about right for the seeing. In most cases it's usually safe enough to capture @ F30 minimum with the F10 11" SCT. Lately, I've been getting jetstream interaction but it's been fairly mild, as well as usual mid level disturbance but combine those 2 & you get what I'd call 'average' seeing. It's therefore manditory for me to jump to 60FPS & fast exposure to try to freeze this seeing. The trade off there is you have to really stick the gain to it to get a nice histogram fill, & so that's where as many frames as possible are paramount. I'll capture for 5.5 mins but stack on average 20-25% of these.

Nothing special re: processing. Stacked in AS!2 > Waveletts added in Registax > little bit of playing around in Paint.net. I don't use any deconvolution these days. That went out the window 4 years ago with me. In essence, most of it happens at capture time. I figure I only have one chance to get it right in this respect on every AVI so I like to get that part of the sequence as near to perfect as I can.
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