Comet ISON was an awaited visitor. Although nobody could be sure of its fate when it got close to the Sun, many thought that it could become “the comet of the century” if it survived. As you know, it didn’t.
Before its demise, I took some pictures of it. It was about two weeks before perihelium.
OK, I don’t know much about comet photography and processing. I tried short shots (30 seconds) , to be sure the movement of the coment didin’t show up in the pictures.
I created two pictures: one in color, adding only two frames in each channel (RGB). And one in B&W, stacking several L frames (and getting rid of the background stars while stacking).