When I m not imaging comets (and there aren t any really bright ones right now) I turn to emission nebulae. Last night the moon limited me to about 17.7Message 1 of 1 , Feb 29, 2012View SourceWhen I'm not imaging comets (and there aren't any really bright ones right now) I turn to emission nebulae. Last night the moon limited me to about 17.7 mags/square arc second, as measured on a Sky Quality Meter. This is equivalent to a NELM of 3.0. That's where the Hydrogen Alpha filter comes in. It effectively blocks all terrestrial light pollution and moon light.
B33 is a fairly dim emission nebulae. Luminance/colorized images with supporting data at
http://users.FoxValley.net/~dpersyk/new.htm . Please check them out.
Igloo (Now Roll-Off) Observatory Home Page http://users.FoxValley.net/~dpersyk
New Images http://users.FoxValley.net/~dpersyk/new.htm
Pier Design http://users.FoxValley.net/~dpersyk/Pier_Design.htm
Daily Bread Spiritual Inspiration http://users.foxvalley.net/~dpersyk/DailyBread/