Hemisphere:  Northern  ·  Constellation: Andromeda (And)  ·  Contains:  Great Nebula in Andromeda  ·  M 110  ·  M 31  ·  M 32  ·  NGC 205  ·  NGC 221  ·  NGC 224
M31 Andromeda Galaxy, 



    
        

            Phil Edmonds
M31 Andromeda Galaxy
Powered byPixInsight

M31 Andromeda Galaxy

M31 Andromeda Galaxy, 



    
        

            Phil Edmonds
M31 Andromeda Galaxy
Powered byPixInsight

M31 Andromeda Galaxy

Technical card

Imaging telescopes or lenses: Skywatcher Esprit 100ED APO Triplet

Imaging cameras: Nikon D3200

Mounts: Celestron Advanced VX


Dates:Jan. 2, 2017

Frames: 23x120" (46') ISO800

Integration: 46'

Avg. Moon age: 4.01 days

Avg. Moon phase: 17.10%

Temperature: -2.00


Basic astrometry details

Astrometry.net job: 1411369

RA center: 00h42m28s.1

DEC center: +41°1658

Pixel scale: 1.447 arcsec/pixel

Orientation: 268.381 degrees

Field radius: 1.456 degrees


Resolution: 6034x4012

Locations: Home Observatory, Salisbury, Wiltshire, United Kingdom

Comments

Revisions

  • M31 Andromeda Galaxy, 



    
        

            Phil Edmonds
    Original
  • M31 Andromeda Galaxy, 



    
        

            Phil Edmonds
    B
  • Final
    M31 Andromeda Galaxy, 



    
        

            Phil Edmonds
    C

B

Description: Tried increasing the colour saturation in Photoshop a little.

Uploaded: ...

C

Description: M31 02.01.2017 30x120" lights and 3x120" darks stacked and stretched in PixInsight (trial version). Then applied Colour Correction (just accepted defaults), SNCR (just accepted defaults) and MLT (just accepted defaults). Don't know what I'm doing in PixInsight yet. Saved as 16-bit TIF, then opened in Photoshop and increased red, yellow and blue colour saturation. Think I've gone as far as I can on these subs, next steps are to fit field flattener, try longer exposures and autoguiding. Had to include some darks to make PixInsight work, previous attempt without darks was better in some respects, must investigate further.

Uploaded: ...

Sky plot

Sky plot

Histogram

M31 Andromeda Galaxy, 



    
        

            Phil Edmonds