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Image of the day 05/08/2019

Getting plate-solving status, please wait...
    Sharpless 174  - SH2-174, 





    
        

            Thomas Richter
    Sharpless 174  - SH2-174

    Sharpless 174 - SH2-174

    Technical card

    Resolution: 5244x3528

    Dates:April 20, 2019April 22, 2019April 26, 2019May 1, 2019May 2, 2019

    Frames:
    Baader B 1.25'' CCD Filter: 26x360" (gain: 53.00) -20C bin 1x1
    Baader G 1.25'' CCD Filter: 26x360" (gain: 53.00) -20C bin 1x1
    Baader Ha 1.25" 7nm: 56x600" (gain: 200.00) -20C bin 1x1
    Baader Planetarium O3 1.25" 8.5nm: 35x600" (gain: 200.00) -20C bin 1x1
    Baader R 1.25'' CCD Filter: 26x360" (gain: 53.00) -20C bin 1x1

    Integration: 23.0 hours

    Darks: ~37

    Flats: ~27

    Flat darks: ~100

    Avg. Moon age: 21.80 days

    Avg. Moon phase: 51.91%

    Astrometry.net job: 2678402

    RA center: 356.791 degrees

    DEC center: 80.935 degrees

    Pixel scale: 0.494 arcsec/pixel

    Orientation: 270.661 degrees

    Field radius: 0.434 degrees

    Data source: Backyard

    Description

    Object description by http://www.sharplesscatalog.com:

    SH2-174 (Sharpless 174 )

    Sh2-174 ranks as the most northern Sharpless objects at 81 degrees north. Sh2-178 very close to Polaris is most likely part of the galactic dust cloud above is just to the north of Sh2-174. It starts to pick up some seen in the upper left corner. The brighter area picks up well with a hydrogen-alpha filter or s standard red filter. However the fainter area around the bright part really works well with only the H-Alpha filter. You will need a very long exposure to pick that part of it up. Large telescopes will not only show more structure, but show more detail in the reflection part of this area. The Oxygen III did not do well at all so Sh2-174 does not make for a good narrowband color image. You will need a great deal of RGB data or the color will come out weak. In addition, the H-Alpha is fairly strong where the reflection part of this image is seen so a composite is needed to retain it.

    Comments

    Author

    superelch
    Thomas Richter
    Like

    Revisions

      Sharpless 174  - SH2-174, 





    
        

            Thomas Richter
      Original
      Sharpless 174  - SH2-174, 





    
        

            Thomas Richter
      D
    • Final
      Sharpless 174  - SH2-174, 





    
        

            Thomas Richter
      E

    D

    bring out the nebula

    E

    modifying stars

    Sky plot

    Sky plot

    Histogram

    Sharpless 174  - SH2-174, 





    
        

            Thomas Richter