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Contains:  NGC 2077, Tarantula nebula, NGC 2070, NGC 2048, NGC 2018, NGC 1966, NGC 1763, The star εDor, The star δDor, The star θDor, The star βMen, The star μMen, Part of the constellation Dorado (Dor)

Image of the day 05/27/2016

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    Large Magellanic Cloud, 





    
        

            Wei-Hao Wang
    Large Magellanic Cloud

    Large Magellanic Cloud

    Technical card

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

    Imaging camera:Nikon D810A

    Mount:iOptron CEM60-EC

    Software:PixInsightAuriga Imaging RegiStarPhotoshop CC

    Filter:H alpha

    Resolution: 2420x3680

    Dates:May 4, 2016

    Frames:
    16x180" ISO800
    H alpha: 12x180" ISO800

    Integration: 1.4 hours

    Avg. Moon age: 26.84 days

    Avg. Moon phase: 7.95%

    Bortle Dark-Sky Scale: 2.00

    Astrometry.net job: 1085344

    RA center: 80.671 degrees

    DEC center: -68.965 degrees

    Pixel scale: 11.515 arcsec/pixel

    Orientation: -179.884 degrees

    Field radius: 7.045 degrees

    Locations: Coonabarabran, Coonabarabran, Australia

    Data source: Traveller

    Description

    The lens is wide open.

    There are three versions. The original version combines the H-alpha and normal RGB exposures, and gives H-alpha a much higher weight, to mimic my impression of the LMC from the film era. In my memory, color slides can record very vivid red nebulas in the LMC, but today's DSLR photos of the LMC usually have purple or even blue nebulas (probably because of their strong [OIII] emission). I love the red nebulas, so I created a version with red nebulas, using H-alpha to overpower [OIII].

    Ver.B contains very little additional H-alpha, primarily just the normal RGB. This is the modern DSLR view of how the LMC looks like.

    Ver.C, the final version, sits between the above two. It gives the modern look, but still has the H-alpha punch.

    Comments

    Author

    whwang
    Wei-Hao Wang
    License: None (All rights reserved)
    216725
    Like

    Revisions

      Large Magellanic Cloud, 





    
        

            Wei-Hao Wang
      Original
      Large Magellanic Cloud, 





    
        

            Wei-Hao Wang
      B
    • Final
      Large Magellanic Cloud, 





    
        

            Wei-Hao Wang
      C

    Sky plot

    Sky plot

    Histogram

    Large Magellanic Cloud, 





    
        

            Wei-Hao Wang