My last post talked about an under appreciated and really fundamental skill for astro imagers; guiding. Marco Rocchetto was kind enough to leave a very informative comment on my post that gave me pause.
In previous articles I covered the early processing steps, like cosmetic correction and linear defect removal. I talked about stacking but missed mentioning star alignment.
For those of you who live in a major urban neighborhood amongst Bortle 9+ skies like me, you know the issues with setting up and executing an observing session in your backyard.