This a narrowband image of the Eastern Veil (also known as Caldwell 33), whose brightest area is NGC 6992, which is part of a much larger nebula complex known as the Veil Nebula, a supernova remnant. This image is created using data collected through Ha, OIII, and SII narrowband filters, to bring out complex details and enhance contrast. Since some of the wavelengths emitted are not detected by the human eye, and the object itself is too faint to detect visually, the colors are an artificial mix, created by arbitrarily assigned the different filtered wavelengths of light to visible colors of the spectrum. This 'mix' is just the one I found to be pleasing, and it also gives the charicteristic reddish colors for the Ha areas and the teal colors for the OIII regions. The color mix used is: Red: 76% Ha, 24% SII Green: 100% OIII Blue: 95% OIII, 5% Ha Equipment: ZWO ASI1600MM-C Camera @ -15C and Gain:139 Offset:21 Software Bisque MyT Mount Stellarvue SVQ100 Astrograph Refractor, 580mm @ f/5.8 Software: Pixinsight Commercial Version 1.8 Lightroom CC Photoshop CC Light Frames: Ha: 8 x 360 secs (48 mins) OIII: 7 x 360 secs (42 mins) SII: 7 x 360 secs (42 mins) Dark Frames: 8 x 360 secs (48 mins) More details from Wikipedia: The Veil Nebula is a cloud of heated and ionized gas and dust in the constellation Cygnus. It constitutes the visible portions of the Cygnus Loop (radio source W78, or Sharpless 103), a large but relatively faint supernova remnant. The source supernova exploded circa 3,000 BC to 6,000 BC, and the remnants have since expanded to cover an area roughly 3 degrees in diameter (about 6 times the diameter, or 36 times the area, of the full moon). The distance to the nebula is not precisely known, but Far Ultraviolet Spectroscopic Explorer (FUSE) data supports a distance of about 1,470 light-years.[2]
This wider view of a trio of galaxies, commonly referred to as the Leo Triplett, shows M66 in the upper left, NGC 3628 (The Hamburger Galaxy) in the upper right, with M65 in the lower left. Equipment: ZWO ASI1600MM-C Camera @ -15C and Gain:74 Offset:12 Software Bisque MyT Mount Stellarvue SVQ100 Astrograph Refractor, 580mm @ f/5.8 Unguided Software: Pixinsight Commercial Version 1.8 Lightroom CC Light Frames: Luminance: 12 x 120 secs (24 mins) Red: 6 x 270 secs (27 mins) Green: 5 x 270 secs (22.5 mins) Blue: 4 x 270 secs (18 mins) Dark Frames: 20 x 270 secs (90 mins) Details about The Leo Triplett From Wikipedia: The Leo Triplet (also known as the M66 Group) is a small group of galaxies about 35 million light-years away[5] in the constellation Leo. This galaxy group consists of the spiral galaxies M65, M66, and NGC 3628.
A first try at a high magnification image of a galaxy. Lots of trouble processing this one, with issues with color balancing, and eventually giving up on separately including a Hydrogen-alpha layer. But this face on galaxy is such an interesting target, with it's many star forming regions, grand spiral design, and obvious signs of a tidal disruption from a close encounter with a passing galaxy in its past, that I am still enjoying this result. Equipment: ZWO ASI1600MM-C Camera @ -15C and gain:139 Offset:21 Software Bisque MyT Mount Stellarvue SVQ100 Astrograph Refractor, 580mm @ f/5.8 Software: Pixinsight Commercial Version 1.8 Lightroom CC Photoshop CC Light Frames: Luminance: 55 x 90 secs (82.5 mins) Red: 6 x 150 secs (15 mins) Green: 6 x 150 secs (15 mins) Blue: 6 x 150 secs (15 mins) Dark Frames: 20 x 90 secs (30 mins) 20 x 150 secs (50 mins) Details about The Pinwheel Galaxy From Wikipedia: The Pinwheel Galaxy (also known as Messier 101, M101 or NGC 5457) is a face-on spiral galaxy distanced 21 million light-years (six megaparsecs)[3] away from earth in the constellation Ursa Major. First discovered by Pierre Méchain on March 27, 1781, it was communicated to Charles Messier who verified its position for inclusion in the Messier Catalogue as one of its final entries. M101 is a large galaxy comparable in size to the Milky Way. With a diameter of 170,000 light-years it is roughly equal the size of the Milky Way. It has a disk mass on the order of 100 billion solar masses, along with a small central bulge of about 3 billion solar masses.[11]
