While I do a lot of imaging from my backyard, I try to get to my local dark sky site for a few days once a month during the new moon.

I'd like to tell you about a technique I've been using as part of my processing flow here lately that has stepped up what I can get done.

As I went through all the old observations I noticed we had a good set of R, G, and B for NGC 1300, but no L. We have other sets like that in there too.

So, taking a cue from my last post I decided to try and tackle processing mosaic data into an image.

There is a measure in astronomy that is called full width at half maximum (FWHM).

I would like to talk to you about a technique I use for killing glow around bright stars when you accidentally image during a night that has more moisture in the air than you would think.