Summer 2022 (updated Dec 2022 with new Mars and Neptune images): Most astronomers would consider us well into planet season. While I have broken out the planetary camera, which was tucked away for the better part of this year once the gas giants were out of the sweet spot of 1st shift mortals, the turbulence (poor seeing) and low angle in the sky have not allowed me to get any good imaging sessions yet this year. So, I decided to go back and update the post-processing a couple of my older images of Jupiter and Saturn, and I added a starfield behind Saturn just for artistic liberty (in planetary imaging, the planet is so bright that the camera does not have the dynamic range ("brightest vs. dimest" areas of image) to view stars behind it). The images of Uranus, Venus, and Mars are still the originals from sessions in 2020 and 2021 - Uranus is so far away that despite it's actual size, is very difficult to find and image well (it's reflected light takes 2 hours just to reach Earth). With an 8" Schmidt-Cassegrain, mediocre seeing and limited processing SW, these are still a ways off from print worthy quality, but I still find it amazing that we can aquire even this level of imaging from a backyard telescope. These images are stacks of roughly 1000 images (about 20% of the total aquired for that night). The image processing software utilizes a well known technique called "Lucky Imaging" which analyzes the set of images, aquired at about ~30-60 frames per second with a dedicated astronomy camera, and by analyzing the images at a pixel level, determines which are the most "crisp." It then stacks them to create a single image. There are two key standard image processing techniques used to bring out additional detail and clarity (for which kind astronomer-mathemetician-software developer souls have created some simple GUIs in freeware) - the first magical algrothm is called deconvolusion. The second Harry-Potter-like post processing tool is called Wavelets, which manipulates the image across different spatial frequencies. Combining all of those, like most of astrophotography, is a bit art and a bit science (and tons of patience). To improve upon the images shown here, I would benefit from having a larger aperture (ability to resolve detail is directly proportional to aperture size), and better seeing conditions (a still day for the atmosphere, no jet streams overhead, no dramatic thermal gradient layers). But, until then, I'll be pleased with this bunch. So far the only planet (exluding dwarf planets, sorry Pluto) I have not imaged yet is Mercury. He's on the 2023 bucket list.





