NGC7000 is a red emission nebula, and DSLR cameras use to filter the light coming from this kind of nebulae (called H-alfa). So, it is more difficult to catch the nebula in a picture if the camera has not been modded with a new filter compatible with H-alfa light.

Nevertheless, taking deep exposures, the red tones pop up. This is a 397 seconds exposition at ISO800 through a 55mm lens with a Canon EOS 450d Rebel XSi.

by ComputerPhysicsLab on 2010-11-08 19:10:11 [Original Size] - [Next Image] - [Author's gallery]