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Contains:  IC 3578, NGC 4568, Siamese Twins, NGC 4567
Getting plate-solving status, please wait...
NGC4567 Butterfly or Siamese Twins, 





    
        

            Joostie
NGC4567 Butterfly or Siamese Twins

NGC4567 Butterfly or Siamese Twins

Link to TIFF/FITS: http://www.drogenberg.be

Technical card

Resolution: 1070x743

Dates:April 12, 2018

Frames:Optolong L-Pro 2" Nikon T-Ring: 9x600" ISO800 11C bin 1x1

Integration: 1.5 hours

Darks: ~30

Flats: ~30

Bias: ~50

Avg. Moon age: 25.95 days

Avg. Moon phase: 13.80%

Bortle Dark-Sky Scale: 4.00

Mean SQM: 20.74

Temperature: 11.00

Astrometry.net job: 2009870

RA center: 189.141 degrees

DEC center: 11.226 degrees

Pixel scale: 0.842 arcsec/pixel

Orientation: 79.616 degrees

Field radius: 0.152 degrees

Locations: Meldert @Home, Hoegaarden, Vlaams Brabant, Belgium

Data source: Backyard

Description

A short run on this galaxy. I was facing some collimation issues which is visible in the star images.
Lot's of moisture in the sky! 97% humidity

The SQM went from 20,37 to 20,74 when the public lights switched off at midnight. It makes a difference ... was even noticeable on the frames that became a bit darker.

Comments

Author

Joostie
Joostie
License: Attribution-NonCommercial-NoDerivs Creative Commons
1290
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Revisions

  • NGC4567 Butterfly or Siamese Twins, 





    
        

            Joostie
    Original
  • Final
    NGC4567 Butterfly or Siamese Twins, 





    
        

            Joostie
    B

B

Crop on the galaxies of the previous overview image

Sky plot

Sky plot

Histogram

NGC4567 Butterfly or Siamese Twins, 





    
        

            Joostie