Entering the processing fray

The greatest advancement in astronomy is probably the computer, for amateurs and professionals alike. Stacking images is now routine procedure for images published by amateurs. I'm coming to this software angle rather late in the game. Here are my first attempts using Comet Lovejoy as my target and the free software Registax:

Single 3-minute image, no processing

Stack of 4 images

What a fabulous sinkhole for my time that has just opened up!

jg