I agree with notes, if you are using an LPI camera, let it do the stacking for you. I usually take about 250 images and set the tolerance to keep only teh best 20% of teh images. That way 80% of the blurred ones get tossed and don't degrade my image. I alos take frames that on the screen look underexposed or darker than your final image. I have the sharpening filter set to hard. Then when you process them, I use .tif files in photoshop, you can increase the contrast with curves slightly, and use color balance to bring out the contrast between bands. seems to help. see attached taken with my LX90 8" and a telextender.
By taking so many images, aren't you getting "smear" from Jupiter's rapidly spinning clouds, etc.? [especially if you set envisage to throw away the bad frames and the seeing is "iffy] What exactly is a telextender?? And should I get one? I Have a 2x barlow lens, is that the same? Your pic looked 10x better than anything I ever got.
