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Contains:  NGC 5195, Whirlpool galaxy, M 51, NGC 5194

Image of the day 07/04/2017

Getting plate-solving status, please wait...
    M51 the Whirlpool Galaxy, 





    
        

            tommy_nawratil
    M51 the Whirlpool Galaxy

    M51 the Whirlpool Galaxy

    Technical card

    Resolution: 2239x1693

    Dates:May 18, 2017

    Frames: 304x180"

    Integration: 15.2 hours

    Avg. Moon age: 21.65 days

    Avg. Moon phase: 55.30%

    Astrometry.net job: 1634939

    RA center: 202.492 degrees

    DEC center: 47.238 degrees

    Pixel scale: 0.784 arcsec/pixel

    Orientation: 179.397 degrees

    Field radius: 0.306 degrees

    Locations: my lovely garden, near Vienna, Austria

    Description

    This is a LRGBHa of 149+62+36+28+29 subframes. The trick for the details was to sort out the best Luminance data by FWHM, and stack them separately to build the highlights from them. All of them were used for the background and extracting weak signal.

    A crop on the galaxy and a full field is provided, both at 100% resolution.

    A good deal of sharpening and contrasting was done using a new technique developed for Photoshop by Christoph Kaltseis, he showed it first at CEDIC 2017 conference in Austria. It free and non commercial, learn more about APF-R here:
    http://www.cedic.at/apfr/

    Comments

    Author

    tommy_nawratil
    tommy_nawratil
    License: None (All rights reserved)
    512050
    Like

    Revisions

      M51 the Whirlpool Galaxy, 





    
        

            tommy_nawratil
      Original
    • Final
      M51 the Whirlpool Galaxy, 





    
        

            tommy_nawratil
      B
      M51 the Whirlpool Galaxy, 





    
        

            tommy_nawratil
      C

    B

    crop on M51

    C

    annotated version

    Sky plot

    Sky plot

    Histogram

    M51 the Whirlpool Galaxy, 





    
        

            tommy_nawratil