B 33, Horsehead Nebula
About image
One of the most identifiable nebulas in the sky, the Horsehead Nebula in Orion, is part of a large, dark, molecular cloud; also known as Barnard 33, the unusual shape was first discovered on a photographic plate in the late 1800s.
The red 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. Light takes about 1,500 years to reach us from the Horsehead Nebula.
[text from APOD]
Technical data R 24x300" bin3 -15C Ha 44x300 bin3 -15C all gain 100
Optic GSO RC12 Truss - Aperture 304mm, focal lenght 2432mm, f/8
Mount 10Micron GM2000 HPSII
Camera ZWO ASI 2600 MM Pro with filter wheel 7 positions
Filters Astrodon Gen2 E-Serie Tru-Balance 50mm unmounted LRGB and Ha 5nm
Guiding system ZWO OAG-L with guide camera ASI 174MM
Exposure details L 62x300" bin3 -15C
G 24x300" bin3 -15C
B 24x300" bin3 -15C
Total integration 14h50'
Acquisition Voyager, PHD2
Processing Pixinsight 1.8, Photoshop CS5, StarXTerminator, NoiseXTerminator, BlurXTerminator
SQM-L 21.00
Location Promiod (Aosta Valley, Italy), own remote observatory
Date 30 November, 1/26/27/28/29 December 2024
© Roberto Marinoni 2019 - All rights reserved