Greetings Alex!
Brilliant shot, nearly as good as one of your beaut sketches!
I have recently bought a mount for my iPhone, and I have NightCap installed (which gives surprisingly great star shots when used on a tripod mount).
What is the best way to use this? Just attach it to any eyepiece? I did mount it on a 40mm Super View Camera Projection with pleasing results, but really I don't have a clue what I'm doing.