Here is a famous object, called the Pelican Nebula (even though I think it looks more like a Pterodactyl :) ). This object is frequently imaged along with the North America Nebula, which is a brighter area of nebulosity out of the frame to the left and above. This is shot in narrowband and mixed using the SHO palette. Extra data was taken in the 2 fainter narrowband channels (OIII and SII) to mitigate noise. The stars were added from a very small amount of RGB data. The data was taken unguided. Equipment: ZWO ASI1600MM-C Camera @ -15C and Gain:200 Offset:50 Software Bisque MyT Mount Stellarvue SVQ100 Astrograph Refractor, 580mm @ f/5.8 Software: Pixinsight Commercial Version 1.8 Lightroom CC Photoshop CC Innovations Foresight SkyGuard Light Frames: Ha: 62 x 360 secs (6 hrs 12 mins) OIII: 81 x 360 secs (8 hrs 06 mins) SII: 84 x 360 secs (8 hrs 24 mins) Red:16 x 30 secs (8 mins) Green:16 x 30 secs (8 mins) Blue: 16 x 30 secs (8 mins) 23 hrs 06 mins total Dark Frames: 10 x 30 secs, RGB (5 mins) 10 x 360 secs, Ha,OIII,SII (3 hrs) Bias Frames 60 Flat Frames 20 each filter From Wikipedia: The Pelican Nebula (also known as IC 5070 and IC 5067[1]) is an H II region associated with the North America Nebula in the constellation Cygnus. The gaseous contortions of this emission nebula bear a resemblance to a pelican, giving rise to its name.[1] The Pelican Nebula is located nearby first magnitude star Deneb, and is divided from its more prominent neighbor, the North America Nebula, by a molecular cloud filled with dark dust. The Pelican is much studied because it has a particularly active mix of star formation and evolving gas clouds.
This is the Fishhead Nebula (IC 1795), an energetic star forming region shaped like a fish, which is part of the larger Heart Nebula. This is mixed in a modified SHO palette. Melotte 15 is also seen in the upper portion slightly left of center. Equipment: ZWO ASI1600MM-C Camera @ -20C and Gain:200 Offset:50 Software Bisque MyT Mount Stellarvue SVQ100 Astrograph Refractor, 580mm @ f/5.8 Innovations Foresight ONAG Software: Pixinsight Commercial Version 1.8 Lightroom CC Photoshop CC Innovations Foresight SkyGuard Light Frames: Ha: 50 x 360 secs ( 5 hrs) OIII: 51 x 360 secs (5 hrs 6 mins) SII: 49 x 360 secs (4 hrs 54 mins) Red: 30 x 30 secs (15 mins) Green: 30 x 30 secs (15 mins) Blue: 31 x 30 secs (15 mins 30 secs) 15 hrs 45 mins 30 secs total Dark Frames: 10 x 60 secs, RGB (30 mins) 10 x 360 secs, Ha,OIII,SII (3 hrs) Bias Frames 100 Flat Frames 20 each filter
IC1795, the Fishhead Nebula, is an aptly named emission nebula that is often imaged as part of the larger Heart Nebula. It is a star forming region in the northern constellation Cassiopeia. This version shows off the conventional Hubble or SHO palette, where the colors are mapped as follws: S - imaged with the SII filter, to Red H - imaged with the H-a filter, to Green O - imaged with the OIII filter, to Blue In addition to the Fishhead, a portion of Melotte 15, in the center of the larger Heart Nebula, appears in the upper left of center portion of this image. Equipment: ZWO ASI1600MM-C Camera @ -20C and Gain:200 Offset:50 Software Bisque MyT Mount Stellarvue SVQ100 Astrograph Refractor, 580mm @ f/5.8 Innovations Foresight ONAG Software: Pixinsight Commercial Version 1.8 Lightroom CC Photoshop CC Innovations Foresight SkyGuard Light Frames: Ha: 50 x 360 secs ( 5 hrs) OIII: 51 x 360 secs (5 hrs 6 mins) SII: 49 x 360 secs (4 hrs 54 mins) Red: 30 x 30 secs (15 mins) Green: 30 x 30 secs (15 mins) Blue: 31 x 30 secs (15 mins 30 secs) 15 hrs 45 mins 30 secs total Dark Frames: 10 x 60 secs, RGB (30 mins) 10 x 360 secs, Ha,OIII,SII (3 hrs) Bias Frames 100 Flat Frames 20 each filter
