That is a lovely Saturn. I really can't complain about how it turned out, but there were a couple of things with your capture settings that I would like to comment on.
1) "Gain: 30
Exp (ms): 37
I have the 8SE + ASI120MC, and I am only using an Orion Shorty Barlow instead of your Powermate. It looks by scale between your Saturn image and one of mine, the powermate nets an image about 90% the size of mine. (maybe f/18 instead of f/20). Nevertheless, with your capture settings your Gain seems a bit low and Gamma is a bit high. I think Sam says you should stay at 50 for Gamma.
When I shot Saturn on Friday, I had gain at 100, exposure around 33ms and gamma at 50. That gave me around 50% on the histogram. Was your histogram around 50 also?
I did a direct comparison with your image and mine (You had a lot better seeing than I did, it was about average here) after resizing and rotating, and it looks like the disc of Saturn looked a little bit flat, which I think is caused by the high gamma setting. But like I said before, your image is fine, but wanted to point out some things just because you are starting out with the camera.
Wanted to point out a couple of things about your moon images. I'm guessing you used Registax wavelets for the processing? It took me a while when I first started doing moon images, that Registax may not be the best way to sharpen the images. I would take images that I had and compared them to images of others and I found them lacking. For me, sharpening with wavelets in registax made the images too contrasty, and it would goof with some of the finer details. That is what I feel is happening in your moon images.
When I was reading about processing back in the day, I ran across this great procedure for using a bit of unsharp masking in combination with high pass filters to get better results. I tried to find the page again and it looks like it is gone. The procedure was called "Goodbye Wavelets" by Tony Gondola. An example on how it is a bit better can be found here
. I really cant remember the steps now so I cant help. Maybe Bart Declercq still remembers? I know he posts here in the forums every once in a while.
I forgot how to do the high pass filtering routine mainly because after I found the lucy-richardson deconvolution routine in AstraImage, I havent tried anything else. I seem to get better results out of it than wavelets or high pass filtering. At the bottom ive attached a quick process of a moon image I took on Friday with a 2x barlow. On the left, I did some wavelet sharpening, on the right, I did a quick l-r deonvolution. I took the image around 6pm local and desaturated the colors because everything was blue!
I found that I had to try a lot of different settings and routines for sharpening before I found a way I liked. Just looking in the registax window or what a single image looked like is really not enough. You kinda need to process/save/tweak the settings/save/andsoforth, and then flip between the images to find which one looks best.
Just two other things before I let you go.
1) were you using the latest FireCapture Beta for capturing?
2) If you didn't know already, you can use a Cut-out in FC that floats around the planet and will allow for smaller file sizes.
3) It appears that you only captured for ~120s. With Saturn, you can capture for quite a bit longer, I actually capture for 5 minutes. That gives me ~9000 frames and I stack just about half of them.