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Contains:  NGC 281

Image of the day 12/02/2015

Getting plate-solving status, please wait...
    NGC281 - The Pacman Nebula, 





    
        

            Paddy Gilliland
    NGC281 - The Pacman Nebula

    NGC281 - The Pacman Nebula

    Technical card

    Imaging telescope or lens:Takahashi FSQ 106EDXIII

    Imaging camera:QSI 683WSG-8 OAG QSI 683

    Mount:Paramount MyT

    Guiding telescope or lens:Takahashi FSQ 106EDXIII

    Software:Pixinsight 1.8

    Filters:Ha 5nmOIII 5nmSII 5nm

    Resolution: 1987x1795

    Dates:Nov. 20, 2015Nov. 21, 2015Nov. 22, 2015

    Frames:
    Ha 5nm: 17x1800" bin 1x1
    OIII 5nm: 17x1800" bin 1x1
    SII 5nm: 21x1800" bin 1x1

    Integration: 27.5 hours

    Avg. Moon age: 9.79 days

    Avg. Moon phase: 74.07%

    Astrometry.net job: 867985

    RA center: 13.122 degrees

    DEC center: 56.706 degrees

    Pixel scale: 2.096 arcsec/pixel

    Orientation: 176.274 degrees

    Field radius: 0.779 degrees

    Locations: Deep Sky West Remote Observatory (DSW), Rowe, New Mexico, United States

    Description

    First time I have tried to process this object - thought it would be a lot easer than it actually was
    The mixture of diffuse nebula and detailed dense nebula was more complex than anticipated but close to where I would like to be. Credit to those who have published before as it is not as easy as it looks. Except....
    I had all sorts of issues with ICC profiles whit what I see on monitor being much lighter than what I see once uploaded (any advice on ICC profiles greatly received.)

    Rev B - Just lifted a little with curves to show a little of the dimmer edges.

    Rev C - Just a little crop to kill some dead space.
    -----------------------------------------------------------------------------------------------------------------------------------
    NGC 281 is an H II region in the constellation of Cassiopeia and part of the Perseus Spiral Arm. It includes the open cluster IC 1590, the multiple star HD 5005, and several Bok globules. Colloquially, NGC 281 is also known as the Pacman Nebula for its resemblance to the video game character.

    The nebula was discovered in August 1883 by E. E. Barnard, who described it as "a large faint nebula, very diffuse." The multiple star HD 5005, also called \beta1, was discovered by S. W. Burnham. It consists of an 8th-magnitude primary with four companions at distances between 1.4 and 15.7 seconds of arc. There has been no appreciable change in this quintuple system since the first measurements were made in 1875.
    Wikipedia

    Comments

    Author

    patrickgilliland
    Paddy Gilliland
    License: None (All rights reserved)
    162523
    Like

    Revisions

      NGC281 - The Pacman Nebula, 





    
        

            Paddy Gilliland
      Original
      NGC281 - The Pacman Nebula, 





    
        

            Paddy Gilliland
      B
    • Final
      NGC281 - The Pacman Nebula, 





    
        

            Paddy Gilliland
      C

    Sky plot

    Sky plot

    Histogram

    NGC281 - The Pacman Nebula, 





    
        

            Paddy Gilliland