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.
Powered byPixInsight

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.

Equipment

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

Acquisition details

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: 2287394

RA center: 00h42m24s.10

DEC center: +41°1239

Pixel scale: 2.986 arcsec/pixel

Orientation: 258.196 degrees

Field radius: 1.361 degrees

Resolution: 1824x1209

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