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Contains:  M 109, NGC 3992
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M 109, 





    
        

            Fritz
M 109

M 109

Technical card

Imaging telescope or lens:SkyWatcher MAK 127

Imaging camera:Canon 650D(a)

Mount:Celestron CGEM

Guiding telescopes or lenses:Lacerta 72/432mm ED-APOLacerta MGEN Autoguider

Software:PixInsight 1.8 RipleyFitswork4Adobe Photoshop

Resolution: 5028x3276

Dates:March 3, 2016March 29, 2016April 1, 2016April 2, 2016

Frames:
7x360" ISO800
12x720" ISO800
37x900" ISO800

Integration: 12.3 hours

Darks: ~5

Flats: ~20

Bias: ~50

Avg. Moon age: 22.68 days

Avg. Moon phase: 44.38%

Astrometry.net job: 1916570

RA center: 179.407 degrees

DEC center: 53.378 degrees

Pixel scale: 0.572 arcsec/pixel

Orientation: 65.865 degrees

Field radius: 0.476 degrees

Locations: Mobile Setup, Hohe Wand, Niederösterreich, Austria; Mobile Setup, Wien, Austria

Description

Given all the efforts, the result is somewhat disappointing. Processing was a real challenge, since light beams from the nearby star Phekda (γ Ursae Majoris) are spread all over the FOV. I ended up with an extremely flattend background and very little stretching. To be honest, right now this represents all of my processing skills (poor enough), but i just do not want to discard 12+ hours of integration time.

Version B:
Bad weather for weeks nails me down to post processing. This one was tough - still there is a lot of alien light in the background to eliminate, the little Mak is not very suitable for DS photograpy and so on. But with gained experience and skills i was able to do a little better. I used different stacks for background, stars and the galaxy.

Comments

Author

Magellen
Fritz
License: Attribution-NonCommercial-ShareAlike Creative Commons
4584
Like

Revisions

  • M 109, 





    
        

            Fritz
    Original
  • Final
    M 109, 





    
        

            Fritz
    B

B

Reprocessed from scratch

Sky plot

Sky plot

Histogram

M 109, 





    
        

            Fritz