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

Image of the day 07/04/2017

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



    
        

            tommy_nawratil
    M51 the Whirlpool Galaxy
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    M51 the Whirlpool Galaxy

    Technical card


    Dates:May 18, 2017

    Frames: 304x180" bin 0x0

    Integration: 15.2 hours

    Avg. Moon age: 21.65 days

    Avg. Moon phase: 55.30%


    Basic astrometry details

    Astrometry.net job: 1634939

    RA center: 13h 29' 58"

    DEC center: +47° 14' 16"

    Pixel scale: 0.784 arcsec/pixel

    Orientation: 179.397 degrees

    Field radius: 0.306 degrees


    Resolution: 1280x968

    Locations: my lovely garden, near Vienna, Austria

    Data source: Traveller

    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)
    684355
    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

    Description: crop on M51

    C

    Description: annotated version

    Sky plot

    Sky plot

    Histogram

    M51 the Whirlpool Galaxy, 



    
        

            tommy_nawratil