CraigT82 Posted October 10, 2020 Share Posted October 10, 2020 Some quite nice seeing last night, if cold and exceedingly dewey! This is a straight RGB capture, 3 mins per channel and best 30% stacked for each. The resulting 3 stacks were then derotated together in winjupos to create the colour image. AS3 > registax > winjupos > gimp 8 Quote Link to comment Share on other sites More sharing options...
Carastro Posted October 10, 2020 Share Posted October 10, 2020 Very nice detail.Carole 1 Quote Link to comment Share on other sites More sharing options...
CraigT82 Posted October 10, 2020 Author Share Posted October 10, 2020 Thanks Carole Quote Link to comment Share on other sites More sharing options...
KevS Posted October 10, 2020 Share Posted October 10, 2020 Very nice detail in those Craig. What is was the "naked" focal length of the Newtonian used? Quote Link to comment Share on other sites More sharing options...
geoflewis Posted October 10, 2020 Share Posted October 10, 2020 Very nice Craig,I gave Mars a miss last night, as the aspect on show would have been very similar to my image from the 8th, plus I was too knackered from late sessions on 6th and 8th....Cheers, Geof Quote Link to comment Share on other sites More sharing options...
CraigT82 Posted October 10, 2020 Author Share Posted October 10, 2020 @KevS thanks Kev, it is f/7.5 (1650mm) 1 Quote Link to comment Share on other sites More sharing options...
CraigT82 Posted October 10, 2020 Author Share Posted October 10, 2020 @geoflewis thanks Geof, yes always worth leaving a few days between sessions on Mars. Quote Link to comment Share on other sites More sharing options...
MarkAR Posted October 10, 2020 Share Posted October 10, 2020 Superb detail Craig. 1 Quote Link to comment Share on other sites More sharing options...
Luke Posted October 12, 2020 Share Posted October 12, 2020 Nice images. Do you think derotation gives much of an improvement? I can understand it's necessary with Jupiter's fast rotation, but wouldn't have thought Mars moved fast enough. 1 Quote Link to comment Share on other sites More sharing options...
Gina Posted October 12, 2020 Share Posted October 12, 2020 Very nice indeed ? 1 Quote Link to comment Share on other sites More sharing options...
Vicki Posted October 12, 2020 Share Posted October 12, 2020 Posted by: @CraigT82 Some quite nice seeing last night, if cold and exceedingly dewey! This is a straight RGB capture, 3 mins per channel and best 30% stacked for each. The resulting 3 stacks were then derotated together in winjupos to create the colour image. AS3 > registax > winjupos > gimpWow, they're really nice. I can't get over how much Mars looks like a marble, really pretty! 1 Quote Link to comment Share on other sites More sharing options...
CraigT82 Posted October 12, 2020 Author Share Posted October 12, 2020 Posted by: @Luke Nice images. Do you think derotation gives much of an improvement? I can understand it's necessary with Jupiter's fast rotation, but wouldn't have thought Mars moved fast enough.Thanks. For this capture, not much at all. During processing I always compare a derotated image and a non derotated image image for comparison to see which one yields best results. In this case I preferred the derotated image but there wasn't much in it.To be methodical about it it's fairly easy to calculate how long you can capture for before rotational smearing affects the image. You just need to know the rotational speed of the planet at the equator, the planets distance, the size of you pixels and your focal length. Quote Link to comment Share on other sites More sharing options...
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