Back in April, I tried to image this target. Neat to work on it again. It's coming around the corner, a target best viewed in the winter. NGC 3242 or Ghost of Jupiter is back. Also known as Caldwell 59.
This was early in my usage of the BGO robot and I did not have a lot of experience. I've since realised that planetary nebulae are rather bright and using 60 second subexposures, fine for galaxies, causes problems. On April 24, I thought the images were blown out. I also felt the blue data very poor. And for PNs, now, I'm trying to collect O-III data.
This time I halved the exposure times, I collected more blue data, requested oxygen, I skipped the luminance, and doubled-up on the hydrogen.
Green only, 30 seconds subexposures, 10 stacked shots. Looks OK.
Blue only, 30 seconds subexposures, 10 stacked shots. Also looks OK.
O-III only, 30 seconds subexposures, 5 stacked shots. Love that. No stars!
H-α only, 30 seconds subexposures, 10 stacked shots. Looks OK.
All processed with FITS Liberator and Paint.NET. All: north is up; east is left.