Imaging telescope or lens: Explore Scientific 152 mm Carbon Fiber
Imaging camera: ZWO ASI1600MM-Cool
Mount: Astro-Physics Mach 1 GTO
Guiding telescope or lens: Orion 80mm Short Tube
Guiding camera: Starlight Xpress Lodestar x2
Integration: 12.0 hours
Avg. Moon age: 14.09 days
Avg. Moon phase: 78.16%
Bortle Dark-Sky Scale: 6.00
Astrometry.net job: 1883636
RA center: 100.306 degrees
DEC center: 9.453 degrees
Pixel scale: 0.649 arcsec/pixel
Orientation: 3.355 degrees
Field radius: 0.482 degrees
Locations: Backyard Red Zone Observatory, Taylor, MI, Michigan, United States
I have been struggling with the Cone Nebula in processing it. There was no OIII data. Doing a straight bicolor combination seemed a little flat. I decided to do a bicolor with Ha and SIII, create a synthetic green but then bring back some of the SII data back in Photoshop. Little happier with it now.
The Cone Nebula is an H II region in the constellation of Monoceros. It was discovered by William Herschel on December 26, 1785, at which time he designated it H V.27. The nebula is located about 830 parsecs or 2,700 light-years away from Earth. The Cone Nebula forms part of the nebulosity surrounding the Christmas Tree Cluster. The designation of NGC 2264 in the New General Catalogue refers to both objects and not the nebula alone.
The diffuse Cone Nebula, so named because of its apparent shape, lies in the southern part of NGC 2264, the northern part being the magnitude-3.9 Christmas Tree Cluster. It is in the northern part of Monoceros, just north of the midpoint of a line from Procyon to Betelgeuse.
The cone's shape comes from a dark absorption nebula consisting of cold molecular hydrogen and dust in front of a faint emission nebula containing hydrogen ionized by S Monocerotis, the brightest star of NGC 2264. The faint nebula is approximately seven light-years long (with an apparent length of 10 arcminutes), and is 2,700 light-years away from Earth.
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