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Contains:  NGC 2024, NGC 2023, Horsehead nebula, IC 434, IC 432, NGC 1999, NGC 1990, M 43, NGC 1982, NGC 1977, NGC 1980, M 42, Great Nebula in Orion, NGC 1976, NGC 1975, NGC 1981, The star Alnitak (ζOri), The star σOri, The star Alnilam (εOri), The star 45Ori, The star ιOri, The star θ2Ori, The star θ1Ori, The star 42Ori, The star 31Ori, Part of the constellation Orion (Ori)
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Region around M42 and the Horse Head, 





    
        

            Wei-Hao Wang
Region around M42 and the Horse Head

Region around M42 and the Horse Head

Technical card

Imaging telescope or lens:Takahashi TOA 150

Imaging camera:Pentax 645z Mod

Mount:Takahashi EM-400 Temma2

Guiding telescope or lens:SharpStar 50 ED

Guiding camera:Fishcamp Starfish

Focal reducer:Takahashi TOA 67 Flattener

Software:PixInsightAuriga Imaging RegiStarPhotoshop CC

Resolution: 5880x8580

Dates:Oct. 23, 2017

Frames: 110x480" ISO800

Integration: 14.7 hours

Avg. Moon age: 3.44 days

Avg. Moon phase: 12.77%

Bortle Dark-Sky Scale: 2.00

Astrometry.net job: 1881238

RA center: 84.441 degrees

DEC center: -3.845 degrees

Pixel scale: 2.653 arcsec/pixel

Orientation: 359.874 degrees

Field radius: 3.834 degrees

Locations: Mt. Shiao-Shuei (Taiwan), Taichung, Taiwan; Mt. Ho-Huan (Taiwan), Taichung, Taiwan

Data source: Traveller

Description

The 2016/2017 version of exercise for this area of sky.

This is an eight-frame mosaic, plus two additional frames near the center to enhance S/N. This was taken over eight nights between Nov 2016 and Oct 2017.

Ideally, the total exposure should be doubled to reach satisfactory S/N, but it may take another two or three years to achieve this. Will definitely come back to this area in the future.

See it on Gigapan: http://www.gigapan.com/embeds/M6jOuirbv0k/

Comments

Author

whwang
Wei-Hao Wang
License: None (All rights reserved)
102316
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Revisions

  • Region around M42 and the Horse Head, 





    
        

            Wei-Hao Wang
    Original
  • Final
    Region around M42 and the Horse Head, 





    
        

            Wei-Hao Wang
    B

Sky plot

Sky plot

Histogram

Region around M42 and the Horse Head, 





    
        

            Wei-Hao Wang