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Contains:  NGC 2024, Horsehead nebula, IC 434, NGC 1999, NGC 1990, M 43, NGC 1982, NGC 1977, M 42, Great Nebula in Orion, NGC 1976, NGC 1981, The star 29Ori, The star σOri, The star τOri, The star ηOri, The star ιOri, The star Mintaka (δOri), The star Saiph (κOri), The star Alnitak (ζOri), The star Alnilam (εOri), The star Bellatrix (γOri), Part of the constellation Orion (Ori)
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The Barnard's Loop and the Heart of Orion in SHO, 





    
        

            Cfosterstars
The Barnard's Loop and the Heart of Orion in SHO

The Barnard's Loop and the Heart of Orion in SHO

Technical card

Resolution: 4354x2854

Dates:Nov. 25, 2019Nov. 27, 2019Dec. 1, 2019Dec. 3, 2019Dec. 6, 2019

Frames:
Astrodon 36mm O3 5nm: 79x240" (gain: 200.00) -15C bin 1x1
Astrodon 36mm O3 5nm: 30x30" (gain: 200.00) -15C bin 1x1
ZWO 36mm SII: 71x240" (gain: 200.00) -15C bin 1x1
ZWO 36mm SII: 30x30" (gain: 200.00) -15C bin 1x1
zwo 36mm h-alpha: 112x240" (gain: 200.00) -15C bin 1x1
zwo 36mm h-alpha: 30x30" (gain: 200.00) -15C bin 1x1

Integration: 18.2 hours

Darks: ~40

Flats: ~40

Flat darks: ~40

Avg. Moon age: 10.02 days

Avg. Moon phase: 27.99%

Bortle Dark-Sky Scale: 5.00

Astrometry.net job: 3113769

RA center: 5h 42' 38"

DEC center: -2° 12' 50"

Pixel scale: 15.225 arcsec/pixel

Orientation: 86.799 degrees

Field radius: 11.010

Locations: Backyard, Austin, TX, United States

Data source: Backyard

Description

The is my first wide field image with a Canon Lens and my ASI1600MM-PRO and narrowband filters. I had always loved Orion and the great targets for imaging. I also wanted to capture Barnard's Loop.

Barnard's Loop (catalog designation Sh 2-276) is an emission nebula in the constellation of Orion. It is part of the Orion Molecular Cloud Complex which also contains the dark Horsehead and bright Orion nebulae. The loop takes the form of a large arc centered approximately on the Orion Nebula. The stars within the Orion Nebula are believed to be responsible for ionizing the loop.

The loop extends over about 600 arcminutes as seen from Earth, covering much of Orion. It is well seen in long-exposure photographs, although observers under very dark skies may be able to see it with the naked eye.

Recent estimates place it at a distance of either 159 pc (518 light years) or 440 pc (1434 ly) giving it dimensions of either about 100 or 300 ly across respectively. It is thought to have originated in a supernova explosion about 2 million years ago, which may have also created several known runaway stars, including AE Aurigae, Mu Columbae and 53 Arietis, which are believed to have been part of a multiple star system in which one component exploded as a supernova.

Although this faint nebula was certainly observed by earlier astronomers, it is named after the pioneering astrophotographer E. E. Barnard who photographed it and published a description in 1894.

Comments

Author

cfosterstars
Cfosterstars
License: None (All rights reserved)
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Revisions

  • The Barnard's Loop and the Heart of Orion in SHO, 





    
        

            Cfosterstars
    Original
  • The Barnard's Loop and the Heart of Orion in SHO, 





    
        

            Cfosterstars
    B
  • The Barnard's Loop and the Heart of Orion in SHO, 





    
        

            Cfosterstars
    D
  • Final
    The Barnard's Loop and the Heart of Orion in SHO, 





    
        

            Cfosterstars
    E

B

Ran SCNR to remove the very slight greenish cast.

D

Starless version using StarNet++

E

This is a combination of a starless version with the LSHO version using the blend script and screen mode

Sky plot

Sky plot

Histogram

The Barnard's Loop and the Heart of Orion in SHO, 





    
        

            Cfosterstars