The Horsehead Nebula (also known as Barnard 33 in emission nebula IC 434) is a dark nebula in the constellation Orion. The nebula is located just to the south of the star Alnitak, which is farthest east on Orion’s Belt, and is part of the much larger Orion Molecular Cloud Complex. The nebula was first recorded in 1888 by Scottish astronomer Williamina Fleming on photographic plate B2312 taken at the Harvard College Observatory. The Horsehead Nebula is approximately 1500 light years from Earth. It is one of the most identifiable nebulae because of the shape of its swirling cloud of dark dust and gases, which bears some resemblance to ahorse’s head when viewed from Earth.
Imaging telescopes or lenses: Celestron EDGE HD 800
Imaging cameras: Canon EOS 1100D modificata
Mounts: Skywatcher AZ-EQ6 GT
Guiding telescopes or lenses: Celestron EDGE HD 800
Guiding cameras: Meade DSI I Pro Mono
Filters: IDAS LPS D1
Accessories: Celestron Radial Guider, Shoestring Astronomy GPUSB
Resolution: 1024×670
Dates: Oct. 29, 2014
Locations: Osservatorio Felsina
Frames: 17×600″ ISO1600
Integration: 2.8 hours
Darks: ~10
Flats: ~17
Flat darks: ~17
Bias: ~17
Avg. Moon age: 5.14 days
Avg. Moon phase: 26.99%
RA center: 85.271 degrees
DEC center: -2.463 degrees
Pixel scale: 2.059 arcsec/pixel
Orientation: 83.679 degrees
Field radius: 0.350 degrees
Аuthor: DavideAlboresiLenzi
Astrophotography of the day of SPONLI 03.11.2014