Re: [skymap] (OT) IC5070 Pelican Nebula
- Hi Dennis,
Another very fine image! I'm always impressed with the result that can be obtained with the trusty Ha filter :-)
----- Original Message -----
Sent: Saturday, June 11, 2011 12:48 AM
Subject: [skymap] (OT) IC5070 Pelican Nebula
When I'm not imaging comets (and there aren't any really bright ones right now) I turn to emission nebulae. The skyglow from Chicago limits me to about 20 mags/square arc second, equivalent to a NELM of 5.5 or a Bortle Scale 5. When imaging low to the east (towards Chicago) it is much worse.
That's where the Hydrogen Alpha filter comes in. It effectively blocks all terrestrial light pollution and moon light.
IC5070 is among the brighter emission nebulae. Luminance and colorized images with supporting data and a SkyMap screen shot 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/
[Non-text portions of this message have been removed]