Bubble Nebula, M52, and NGC 7538 in h-alpha

Bubble Nebula, M52, and NGC 7538 in Hydrogen Alpha
Nikon 180 mm f/2.8 lens at f/4 with Mandel Widefield Adapter
SBIG ST-2000XM
AstroDon H-alpha filter: 13 exposures of 20 minutes each
ARGO Observatory
August 2005
Click here for a full resolution image.
Click here for a color version taken with my Tak Refractor