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Contains:  NGC 2024, Horsehead nebula, IC 434, NGC 1990, M 42, Great Nebula in Orion, NGC 1976, Witch Head nebula, IC 2118, The star ηOri, The star ιOri, The star Cursa (βEri), The star Mintaka (δOri), The star Saiph (κOri), The star Alnitak (ζOri), The star Alnilam (εOri), The star Bellatrix (γOri), The star Betelgeuse (αOri), The star Rigel (βOri), Part of the constellation Orion (Ori), Part of the constellation Lepus (Lep), Part of the constellation Monoceros (Mon), Part of the constellation Eridanus (Eri)
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Orion

Technical card

Imaging telescope or lens:Sigma 180mm/F2.8 APO

Imaging camera:Nikon D800 Mod

Mount:iOptron CEM60-EC

Software:PixInsightAuriga Imaging RegiStarPhotoshop CC

Resolution: 6000x9200

Dates:Feb. 17, 2018

Frames: 416x180" ISO800

Integration: 20.8 hours

Avg. Moon age: 1.52 days

Avg. Moon phase: 2.60%

Bortle Dark-Sky Scale: 2.00

Astrometry.net job: 1998383

RA center: 84.428 degrees

DEC center: 0.850 degrees

Pixel scale: 13.750 arcsec/pixel

Orientation: 353.236 degrees

Field radius: 20.977 degrees

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

Data source: Traveller

Description

This is a 9-frame mosaic, taken in six nights from Dec 2016 to Feb 2018.

Ver.A (the final) is a version with stronger contrast stretch to bring out the faint nebulas. Ver.B is a standard version with a more natural look.

The original image has 345 mega pixels. Here I upload the 40% reduced versions, for the sake of file size. Later I will probably upload a larger image to Gigapan or somewhere else.

Comments

Author

whwang
Wei-Hao Wang
License: None (All rights reserved)
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Orion, 





    
        

            Wei-Hao Wang