RegiStax V3 is professional software for image processing that allows you to considerably improve the photos of space. Although it is made to process this type of images, that doesn't mean it cannot work with other types of photographs.
If you have an image of the surface of a celestial body that you can't see clearly then this application will solve the problem.
The program works both with complete videos in AVI format and with loose images in popular formats like JPG, BMP, TIFF or PNG.
The actions this tool can perform on the images are the following: alignment, optimization, stacking, wavelets and final adjustments.
The stacking option is capable of obtaining a final image of a better quality starting from an average image having various frames. With 'wavelets' you can emphasize the hidden details of the image.
Finally, you can make some final adjustments to the image and save it in the format of your choice.