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Image of the day 11/29/2018

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    NEW DISCOVERY: Finn's Nebula, a reflection nebula around the variable star BE Cam, 





    
        

            Marcel Drechsler
    NEW DISCOVERY: Finn's Nebula, a reflection nebula around the variable star BE Cam

    NEW DISCOVERY: Finn's Nebula, a reflection nebula around the variable star BE Cam

    Technical card

    Resolution: 4000x3023

    Dates:Nov. 25, 2018

    Frames:
    Baader B 2": 301x50" (gain: 100.00) -20C bin 1x1
    Baader G 2": 434x50" (gain: 100.00) -20C
    Baader Luminance 2": 309x15" (gain: 100.00) -20C bin 1x1
    Baader Luminance 2": 2212x30" (gain: 100.00) -20C bin 1x1
    Baader R 2": 468x50" (gain: 100.00) -20C bin 1x1

    Integration: 36.4 hours

    Darks: ~50

    Flats: ~100

    Bias: ~200

    Avg. Moon age: 17.21 days

    Avg. Moon phase: 93.37%

    Bortle Dark-Sky Scale: 3.00

    Astrometry.net job: 2384896

    RA center: 57.379 degrees

    DEC center: 65.653 degrees

    Pixel scale: 1.466 arcsec/pixel

    Orientation: 268.103 degrees

    Field radius: 1.021 degrees

    Locations: Sternwarte am Bärenstein, Bärenstein, Sachsen, Germany

    Data source: Backyard

    Description

    Finns Nebula is an unknown and uncatalogized reflection nebula around the variable star BE Cam (V* BE CAM, HIP 17884) in the constellation Camelopardalis. It has never been photographed before.
    Finns Nebula is a very rare orange-yellow reflection nebula of the Merope type, because it reminds optically strongly of the nebula around the star in the Pleiades.
    Because Finns nebula is located around a variable star, its brightness varies periodically analogous to its central star. This makes Finns nebula an extremely rare yellow, variable reflection nebula.
    With an extension of 30-40 arc minutes, the reflection nebula is very large, but extremely weak in brightness.

    Dossier on the discovery (PDF) for download:
    http://www.sternwarte-baerenstein.de/upload/be-cam_reflexionsnebel.pdf (german)
    http://www.sternwarte-baerenstein.de/upload/be-cam_reflection_nebula.pdf (english)

    Comments

    Author

    Marcel_Drechsler
    Marcel Drechsler
    License: Attribution-NoDerivs Creative Commons
    161569
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    NEW DISCOVERY: Finn's Nebula, a reflection nebula around the variable star BE Cam, 





    
        

            Marcel Drechsler