Pelican Nebula Ionization Front | Kelvin Phoon

Kelvin Phoon
Location of photo
San Diego, CA
Date/Time of photo
October 2, 2006
Celestron 80ED refractor at f/7.5, Meade DSI Pro II CCD camera, Schuler SII, Hydrogen alpha, and OIII filters, Meade LX90 guided mount.
This narrowband filter image highlights an advancing boundary of cold gas transforming into hot gas emissions from the radiation of nearby stars in the Pelican Nebula, IC5070. Red and green represent ionized Sulfur and Hydrogen. 3 hours 22 minutes total exposure.