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Contains:  Great Nebula in Orion, IC 430, M 42, M 43, NGC 1973, NGC 1975, NGC 1976, NGC 1977, NGC 1980, NGC 1981, NGC 1982, NGC 1999, The star 42Ori, The star 45Ori, The star 49Ori, The star θ1Ori, The star θ2Ori, The star ιOri, The star υOri
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M42 region and ngc1999, 


            Doug.,N. Jiang
M42 region and ngc1999
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M42 region and ngc1999

Technical card

Resolution: 3552x2664



Integration: 0.0 hours

Darks: 0

Flats: 0

Flat darks: 0

Bias: 0

Avg. Moon age: None

Avg. Moon phase: None

Bortle Dark-Sky Scale: None

Mean SQM: None

Mean FWHM: None

Temperature: None

Basic astrometry details job: 2704444

RA center: 5h 35' 17"

DEC center: -5° 34' 48"

Pixel scale: 3.499 arcsec/pixel

Orientation: 270.797 degrees

Field radius: 2.158 degrees

Locations: Gemini observatory, Lijiang, Yunan, P.R.China, Gaomeigu, Yunan, China

Data source: Own remote observatory

Remote source: Lijiang Gemini Observatory


Data Acquired by: GUO QIANG
Post Processing by: Doug., N Jiang
Imaging OTA: TAK FSQ106
Imaging Camera: 11k
single sub: 1200s

Above all i must thank guo qiang for sharing me with his hard worked data.

The M42 region is probably the most imaging region in DSO astrophotography. In this set of data, i focused on the ngc1999 region. Thanks to the strong SNR, the complexity of this area is revealed at a level that i have never seen before. It is comparable to the ngc1333 in the Perseus molecular cloud.



Doug.,N. Jiang
License: None (All rights reserved)


  • Final
    M42 region and ngc1999, 


            Doug.,N. Jiang
  • M42 region and ngc1999, 


            Doug.,N. Jiang
  • M42 region and ngc1999, 


            Doug.,N. Jiang


Description: vertical and horizontal flip for more traditional presentation


Description: Uncropped version with different post processing routine directed by Florine Zhu

Sky plot

Sky plot


M42 region and ngc1999, 


            Doug.,N. Jiang