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Contains:  M 31, Great Nebula in Andromeda, NGC 224, M 32, NGC 221, M 110, NGC 205
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M 31 from city. No filters, no guiding, no PEC, no darks, no flats., 





    
        

            mar.s
M 31 from city. No filters, no guiding, no PEC, no darks, no flats.

M 31 from city. No filters, no guiding, no PEC, no darks, no flats.

Technical card

Imaging telescope or lens:Synta 100/900 ED

Imaging camera:Canon EOS 6D

Mount:Celestron Advanced VX

Software:Siril 0.9.9GIMP V2.10Darktable v2.4.4

Resolution: 2292x1494

Dates:Oct. 4, 2018

Frames:
1x30" ISO102400
23x30" ISO12800
7x30" ISO25600
2x30" ISO3200
2x30" ISO51200
30x30" ISO6400

Integration: 0.5 hours

Avg. Moon age: 24.41 days

Avg. Moon phase: 26.90%

Bortle Dark-Sky Scale: 6.00

Astrometry.net job: 2291025

RA center: 10.625 degrees

DEC center: 41.215 degrees

Pixel scale: 2.986 arcsec/pixel

Orientation: 258.607 degrees

Field radius: 1.135 degrees

Locations: Hans-Nüchter-Sternwarte, Fulda, Hessen, Germany

Data source: Unknown

Description

M 31 from city. No filters, no guiding, no PEC, no darks, no flats.

Just testing what is still possible from a light polluted city location with a DSLR on an unguided mount without filters, darks and flats.
I grabbed an old 2GB SD card and filled it up with light frames. So there was simply no space left for any darks or flats.

Comments

Author

mar.s
mar.s
License: Attribution-ShareAlike Creative Commons
590
Like

Revisions

  • M 31 from city. No filters, no guiding, no PEC, no darks, no flats., 





    
        

            mar.s
    Original
  • M 31 from city. No filters, no guiding, no PEC, no darks, no flats., 





    
        

            mar.s
    B
  • Final
    M 31 from city. No filters, no guiding, no PEC, no darks, no flats., 





    
        

            mar.s
    C

B

Increased saturation. Maybe too much.

C

Image cropped to cut away some areas that desperately would have needed some flat frames.

Sky plot

Sky plot

Histogram

M 31 from city. No filters, no guiding, no PEC, no darks, no flats., 





    
        

            mar.s