View Single Post
  #1  
Old 19-05-2017, 08:09 PM
andyc's Avatar
andyc (Andy)
Registered User

andyc is offline
 
Join Date: Dec 2011
Location: Sydney
Posts: 1,003
Best Jupiter by a mile

Looks like the resolution limit of the 8" scope has a little more leeway after all And I'm just about beginning to get some result from Winjupos, though I don't think it's hugely better than the best 3min stack, and has the issues of looking slightly less natural around the limb (any advice?) and shadows/moons are streaked (also, any advice?). Broke a few of my usual habits due to poor transparency - 27ms vs 16ms exposure, slightly higher gain, only 20-25% (vs usual >40%) on the Firecapture histogram.

Probably the best conditions I've had, and everything else worked nicely, with the GRS & Io transiting, pity the clouds came in at about 8:30pm.

200mm f/5 scope barlowed to f/30. ASI185MC.

First image - Did WinJupos work? a combination of 12x 1-minute clips over 15 minutes, each minute is a stack of 1350 frames, prepped and clipped in PIPP, stacked in Registax, combined in WJ, finished in RS & PS2.

Second image - the best of the 3-minute videos from the 17th, shows pretty much all the detail of the WJ version, and doesn't have streaked shadow. Best 2500 frames of 6700, 180s, 27ms exposure, gain 316.

Third image (for reference) - what I thought was great only a week ago - 10th May, similar settings but seeing not quite as good, at the time it was one of my best images.
Attached Thumbnails
Click for full-size image (Jupiter170517_wj_v3.jpg)
16.9 KB133 views
Click for full-size image (Jupiter170517_1008_3min.jpg)
15.8 KB125 views
Click for full-size image (Jupiter170510.jpg)
13.6 KB113 views

Last edited by andyc; 19-05-2017 at 08:28 PM.
Reply With Quote