Astronomy Special Project by Alice Owen and Declan Rexer
Return to Astronomy Course Home Page
The above photo was composed from 20 exposures of two minutes each in each of two narrow-band filters, and 20 exposures of 10 seconds each in a broadband filter.
The narrow-band image for hydrogen gas is mapped to red, and that for oxygen is mapped to teal. The broadband image is mapped to white.