EarthSky Community Photos
Updates on Your Cosmos and World
Frosty Drew Observatory, Charlestown, RI, USA
Camera: Canon Ra + L-Pro: ISO 3200 60 * 120 sec exposure, 60 * 30 sec exposure
Telescope: Astronomics AT72ED + field flattener: 430mm f/6
Mount: Celestron CGEM DX
Reduced darks, flats, and offsets.
Sigma-clipping composite of 60 * 2 frames
HDR composite of 120 second and 30 second masters.
Information extraction in Photoshop
At Frosty Drew Observatory we started a new project this November with the sword region of the Orion Molecular Cloud Complex. This image represents the first step of that project and is largely just broadband data. The next step will be the addition of narrowband data to show more detail in the emissions nebula. Using the Canon Ra for broadband allowed for the addition of Ha narrowband wavelengths due to the modified filtering in the camera.