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Image of the day 03/22/2019

Getting plate-solving status, please wait...
    Sh2-200 Bearclaw Nebula - HOO-LRGB, 





    
        

            Jerry Macon
    Sh2-200 Bearclaw Nebula - HOO-LRGB

    Sh2-200 Bearclaw Nebula - HOO-LRGB

    Technical card

    Resolution: 1800x1436

    Dates:Sept. 23, 2018Nov. 5, 2018Nov. 6, 2018Nov. 17, 2018

    Frames:
    AstroDon 5nm Ha filter: 189x300" (gain: 99.00) -20C bin 1x1
    AstroDon 5nm Oiii filter: 181x300" (gain: 99.00) -17C bin 1x1
    Astrodon Gen 2 L 36mm: 42x300" (gain: 99.00) -15C bin 1x1
    Astrodon Gen 2 RGB 36mm: 68x100" (gain: 99.00) -15C bin 1x1

    Integration: 36.2 hours

    Avg. Moon age: 19.49 days

    Avg. Moon phase: 43.07%

    Bortle Dark-Sky Scale: 4.00

    Temperature: -5.00

    Astrometry.net job: 2580289

    RA center: 47.739 degrees

    DEC center: 62.795 degrees

    Pixel scale: 0.700 arcsec/pixel

    Orientation: 177.484 degrees

    Field radius: 0.224 degrees

    Locations: Dark Star Observatory, Taos, New Mexico, United States

    Data source: Own remote observatory

    Remote source: Non-commercial independent facility

    Description

    Images from the following two scopes (piggybacked) contributed to this image:
    AG12+ASI1600MM at .70 asec/pix
    TV127is+ASI183MM at .75 asec/pix.
    They were all registered to the best Ha image taken on the AG12.

    Imaged on nights of 9/23/2018, 9/27/2018, 9/28/2018, 9/29/2018, 11/5/2018, 11/6/2018, 11/7/2018, 11/17/2018.

    Sharpless 2-200, also known as HDW 2 (Hartl-Dengl-Weinberger 2), commonly called the "Bearclaw nebula", is a quite old planetary nebula (PN) in the constellation Cassiopeia.
    According to W. A. Weidmann and R. Gamen, who have examined the central stars of different PNs, the central star of HDW 2 is a binary star.
    This is a very faint PN and requires a lot of imaging time to bring out any detail.

    Comments

    Author

    jmacon
    Jerry Macon
    License: Attribution Creative Commons
    123441
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    Sh2-200 Bearclaw Nebula - HOO-LRGB, 





    
        

            Jerry Macon