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
The Helix Nebula is one of the closest planetary nebula to the Earth, at an estimated distance of about 650 light years. This then also makes it the largest planetary nebula in the night sky. Planetary nebula have nothing to do with planets, but are created when some stars, nearing the end of their stellar lifetime, begin to blow off layers of material. This object is low in the sky, even imaged from Southern AZ, but still makes for a interesting object, even with a 100mm refractor. 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: 41 x 300 secs ( 3 hrs 25 mins) OIII: 37 x 300 secs (3 hrs 5 mins) SII: 34 x 300 secs (2 hrs 50 mins) Red: 11 x 30 secs (5 mins 30 secs) Green: 12 x 30 secs (6 mins) Blue: 12 x 30 secs (6 mins) 9 hrs 37 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 More Info from Wikipedia: The Helix Nebula (also known as NGC 7293 or Caldwell 63) is a planetary nebula (PN) located in the constellation Aquarius. Discovered by Karl Ludwig Harding, probably before 1824, this object is one of the closest to the Earth of all the bright planetary nebulae.[4] The distance, measured by the Gaia mission, is 655±13 light-years.[5] It is similar in appearance to the Cat's Eye Nebula and the Ring Nebula, whose size, age, and physical characteristics are similar to the Dumbbell Nebula, varying only in its relative proximity and the appearance from the equatorial viewing angle.[6] The Helix Nebula has sometimes been referred to as the "Eye of God" in pop culture,[7] as well as the "Eye of Sauron".[8][9]
