Owl Nebula
Owl Nebula
Magnify the nebula and galaxy from regular to full size.

It was calm and cold, and by the time my hard drive ran out of storage space some frost had formed on the front of the scope. There was still some good sky left, but there were too many problems to solve at 2:15 am to continue. The pictures looked OK, but when stretched to the max there is a nice rainbow at the bottom right that was hard to deal with in the final stack. I think it was caused by the frost.

Telescope: Celestron RASA 11'' f/2.2
Filter: Optolong L-Pro 2''
Camera: ZWO ASI094 MC-P Color
Mount: Celestron CGX-L
Guide Camera: ZWO ASI290-Mini
Guide Scope: ZWO 60 mm f/4.6
Motorized Focuser: Feather Touch Focus Boss
Software: ASICAP, Celestron PWI, StarTools, PHD, ImagesPlus, Photoshop CS4, FocusLynx, Registar, Team Viewer
Image Capture: 54 x 30 sec, Flats
Location: Kennewick, Washington
Date: 2/02/2020
Weather: Cold and frost had formed on corrector plate.
Photo by Phil Holt