Good morning
Attaching the image of Comet C/2017O1 ASASSN: All process (Telescope/filter-wheel/CCD/Guiding/image capture/calibration/sky background removal/normalization/comet auto stacking using UCAC4 offline catalog) done using PRiSM v10. Opted it over other similar reputed software. It has own class..no comparison needed! ..

I used PRiSM Logo in image.
Regards
Vikrant