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



    
        

            Wei-Hao Wang
Orion
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Orion

Technical card

Imaging telescopes or lenses: Sigma 180mm/F2.8 APO

Imaging cameras: Nikon D800 Mod

Mounts: iOptron CEM60-EC

Software: PixInsight  ·  RegiStar  ·  Photoshop CC


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


Basic astrometry details

Astrometry.net job: 3258114

RA center: 5h 37' 42"

DEC center: +0° 51' 0"

Pixel scale: 13.750 arcsec/pixel

Orientation: 353.236 degrees

Field radius: 20.977 degrees


Resolution: 6000x9200

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)
184829
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Revisions

  • Final
    Orion, 



    
        

            Wei-Hao Wang
    Original
    Orion, 



    
        

            Wei-Hao Wang
    B

Sky plot

Sky plot

Histogram

Orion, 



    
        

            Wei-Hao Wang