Barnard 33 – The Horsehead Nebula

Facts

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 a horse’s head when viewed from Earth.

The red or pinkish glow originates from hydrogen gas predominantly behind the nebula, ionized by the nearby bright star Sigma Orionis. The darkness of the Horsehead is caused mostly by thick dust, although the lower part of the Horsehead’s neck casts a shadow to the left. Streams of gas leaving the nebula are funneled by a strong magnetic field. Bright spots in the Horsehead Nebula’s base are young stars just in the process of forming.

Horsehead_Ha_Stacked_DBE_PI_PS

Object: B33 The Horsehead Nebula
Date: 06.12.2015
Location: Backyard, Asker, NO
Camera: SBIG-STT-8300 MONO CCD
Optics: Takahashi FSQ-106EDX III (w/reducer) 385mm f/3.6
Exposure: Ha 17x600sec (bin 2×2)
Filter: Astrodon Hydrogen Alpha 5nm
Calibration: Darks, Bias
Guiding: MaxIm DL, SBIG Selfguiding FW
Processing: MaximDL, PixInsight, Photoshop

Date: 11.10.2013 Location: Sollihøgda, Bærum, NO Camera: SBIG STT-8300 MONO CCD Optics: Celestron SCT 8" 1260mm f6,3 Exposure: 1 x 10 min lightframes Filter: Hydrogene-Alpha Guiding: SBIG STT-8300 Selfguiding FW Post processing: MaxIM DL, PhotoShop CS5

Object: Barnard33 The Horesehead Nebula
Date: 11.10.2013
Location: Sollihøgda, Bærum, NO
Camera: SBIG STT-8300 MONO CCD
Optics: Celestron SCT 8″ 1260mm f6,3
Exposure: 1 x 10 min lightframes
Filter: Hydrogene-Alpha
Guiding: SBIG STT-8300 Selfguiding FW
Post processing: MaxIM DL, PhotoShop CS5

Hestehodetåken

Object: Barnard33 The Horesehead Nebula
Date: 13.01.2013
Location: Sollihøgda, Bærum, NO
Camera: DSLR Canon EOS 7D
Optics: Celestron SCT 8″ 1260mm f6,3
Exposure: 32 x 5 min lightframes
33 x 5 min darkframes
20 bias + 20 flats
ISO: 1600
Guiding: Lodestar, PHD Guiding
Post processing: DSS, PhotoShop CS5

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