This relatively bright region in the constellation Cygnus is famous for its resemblance to the North American continent, including a prominent Gulf of Mexico area. The Wall section is the bright region of Hα emission that runs along the lower edge of the frame. This image is over 19 hours of data, primarily in Hα and OIII, with about an hour's worth of RGB data used for the stars. Equipment: ZWO ASI1600MM-C Camera @ -15C 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: Hα: 105 x 240 secs (7 hrs ) OIII: 175 x 240 secs (11 hrs 40 mins) Red:46 x 30 secs (23 mins) Green:46 x 30 secs (23 mins) Blue: 46 x 30 secs (23 mins) 19 hrs 49 mins total Dark Frames: 10 x 30 secs each, RGB (15 mins total) 10 x 240 secs each, Hα, OIII(1 hr 20 mins total) Bias Frames 60 Flat Frames 20 each filter
The area made famous by the Hubble 'Pillars of Creation' image is also accessible to amateurs to image. This is a modified palette mixing the 3 typical narrowband filters into a modified SHO result. 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 - 46 x 360 secs ( 4 hrs 36 mins) OIII - 40 x 360 secs (4 hrs) SII - 43 x 360 secs (4 hrs and 18 mins) Red: 7 x 30 secs 3 mins 30 secs) Green: 4 x 30 secs (3 mins 30 secs) Blue: 7 x 30 secs (3 mins 30 secs) 13 hrs 4 mins 30 secs total Dark Frames: 10 x 60 secs (20 mins) Bias Frames 60 Flat Frames 20 each filter Additional data from Wikipedia: The Eagle Nebula (catalogued as Messier 16 or M16, and as NGC 6611, and also known as the Star Queen Nebula and The Spire) is a young open cluster of stars in the constellation Serpens, discovered by Jean-Philippe de Cheseaux in 1745–46. Both the "Eagle" and the "Star Queen" refer to visual impressions of the dark silhouette near the center of the nebula,[3][4] an area made famous as the "Pillars of Creation" imaged by the Hubble Space Telescope. The nebula contains several active star-forming gas and dust regions, including the aforementioned Pillars of Creation.
NGC 281, affectionately referred to as the Pacman Nebula, is an emission nebula at an estimated distance of ~9200 light years, in the constellation of Cassiopeia. 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 360 secs ( 4 hrs 6 mins) OIII: 37 x 360 secs (3 hrs 42 mins) SII: 40 x 360 secs (4 hrs) Red: 24 x 30 secs (12 mins) Green: 22 x 30 secs (11 mins) Blue: 23 x 30 secs (11 mins 30 secs) 12 hrs 22 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 details from Wikipedia: NGC 281, IC 11 or Sh2-184 is a bright emission nebula and part of an H II region in the northern constellation of Cassiopeia and is part of the Milky Way's Perseus Spiral Arm. This 20×30 arcmin sized nebulosity is also associated with open cluster IC 1590, several Bok globules and the multiple star, B 1. It collectively forms Sh2-184,[3] spanning over a larger area of 40 arcmin.[4] A recent distance from radio parallaxes of water masers at 22 GHz made during 2014 is estimated it lies 2.82±0.20 kpc. (9200 ly.) from us.[5] Colloquially, NGC 281 is also known as the Pacman Nebula for its resemblance to the video game character. Edward Emerson Barnard discovered the nebula in August 1883, describing it as "a large faint nebula, very diffuse." Multiple star 'B 1' or β 1 was later discovered by S. W. Burnham, whose bright component is identified as the highly luminous O6 spectral class star, HD 5005 or HIP 4121. It consists of an 8th-magnitude primary with four companions at distances between 1.4 and 15.7 arcsec. There has been no appreciable change in this quintuple system since the first measures were made in 1875.
