This is probably one of my most memorable astrophotographs
ever. This is actually the last (and most successful) out of
three attempts at bagging the green comet.
I just took a tripod and phone to a Bortle 4 site, captured
twelve-second exposures pointed roughly at the comet, and
stacked it all after getting back home.
It was surprisingly difficult to find the comet in the
image. In fact, it wasn't I, but another member of my local
astronomy club who annotated the image.
Stacked with Sequator.