M 52, NGC 7635 (Bubble Nebula)

The open cluster cluster left of the center is M 52 in the constellation of Cassiopeia. 36' toward the SW is the emission nebula NGC 7635, also known as the "Bubble Nebula" because of a faint arc of gas barely visible at this image scale. Also visible is a satellite trail passing right through the nebula. The bright red nebula on the far right is NGC 7538.

Instrument	:	8" Newtonian 800 mm f/4
Film	:	Kodak PJ-400
Date	:	02 Jan. 2000, 02:15 - 02:46 UTC
Site	:	Organ Pipe Cactus National Monument, Arizona
Image #	:	2000-02/16