Hemisphere:  Northern  ·  Constellation: Andromeda (And)  ·  Contains:  Great Nebula in Andromeda  ·  M 110  ·  M 31  ·  M 32  ·  NGC 205  ·  NGC 221  ·  NGC 224
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.
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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., 



    
        

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

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

Technical card

Imaging telescopes or lenses: Synta 100/900 ED

Imaging cameras: Canon EOS 6D

Mounts: Celestron Advanced VX

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


Dates:Oct. 4, 2018

Frames:
1x30" (30") ISO102400
23x30" (11' 30") ISO12800
7x30" (3' 30") ISO25600
2x30" (1') ISO3200
2x30" (1') ISO51200
30x30" (15') ISO6400

Integration: 32' 30"

Avg. Moon age: 24.41 days

Avg. Moon phase: 26.90%

Bortle Dark-Sky Scale: 6.00


Basic astrometry details

Astrometry.net job: 2291025

RA center: 00h42m30s.0

DEC center: +41°1254

Pixel scale: 2.986 arcsec/pixel

Orientation: 258.607 degrees

Field radius: 1.135 degrees


Resolution: 1824x1189

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

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

Description: Increased saturation. Maybe too much.

Uploaded: ...

C

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

Uploaded: ...

Sky plot

Sky plot

Histogram

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



    
        

            mar.s