Jupiter from Illinois on 2022-10-27 (Walter Torres)

Jupiter from Illinois on 2022-10-27

Revision title: Second stack

Finally, after reading many articles and watching many tutorials on how to get my planetary imaging to the next personal level I think I achieved some success last night. Over the past month or so I have tinkered with my image scale and tried many configurations of my ADC, camera, spacers, and barlow to achieve the goal of 5X the pixel size focal length. I've also spent many a night tinkering with my collimation using AI's SCT Collimation Aid, CCD Inspector, and MetaGuide and to my untrained eye I got it as good as I could. I never had any luck with focusing on the planets themselves, I am just not a good judge. Instead my focusing routine is to align the planet in the center of the chip, achieve rough focus and lock the mirror locks, adjust the ADC to remove the fringing, slew to the nearest bright star, refocus using my Bahtinov mask with the help of Bahtinov Grabber, slew back to the planet and image, repeat after 30 minutes. Last night the last piece of the equation came together, decent weather.

As for Jupiter, I included a gif animation composed of all the stacked frames of the night (Best 20% of 89 x 60sec @ 200 fps). It is a good illustration of how seeing and focus change during the night. The first image is from the beginning of the night made up by combining 10 good consecutive stacks and the second is made up of 10 good stacks towards the end of the night, combined in WinJupos. The enhancements on the final images were very minimal, besides RGB balance, I only cropped to get rid of stacking artifacts, adjusted Orange and Yellow towards the red by 10%, and increased saturation by 15% in Photoshop. I did not want to over do it with enhancements on this one.

Original
J
Final
K

J

Title: First stack

Uploaded: ...

K

Title: Second stack

Uploaded: ...

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