Scope: 11″ EdgeHD @f/7 w/ Celestron 0.7 reducer
Camera: Atik 490 ex, binned 2×2, 2″ Baader filters
Mount: CGEM DX
Guiding: Atik OAG, QHY IMG0H, PHD
Processed using AstroArt 5.0 and Photoshop CS5
This is NGC 7635 – the Bubble Nebula in the constellation of Cassiopeia.
I originally processed the narrowband data for this image using the Hubble palette but I wasn’t happy with the results. Instead this rendition uses the Canada-France-Hawaii Telescope (CFHT) palette which maps Ha to red, [OIII] to green, and [SII] to blue.
Ha = 23 x 600s, [OIII] = 21 x 600s, [SII] = 10 x 900s