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Contains:  Triangulum galaxy, M 33, NGC 598
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M33, 





    
        

            Richard Francis
M33

M33

Technical card

Resolution: 3326x2504

Dates:Nov. 30, 2016Dec. 1, 2016Dec. 2, 2016

Frames:
Astrodon Blue G2E: 11x600" -20C bin 1x1
Astrodon Green G2E: 13x600" -20C bin 1x1
Astrodon Red G2E: 12x600" -20C bin 1x1

Integration: 6.0 hours

Avg. Moon age: 1.79 days

Avg. Moon phase: 4.16%

Mean SQM: 21.00

Astrometry.net job: 2226953

RA center: 23.467 degrees

DEC center: 30.658 degrees

Pixel scale: 1.408 arcsec/pixel

Orientation: 92.887 degrees

Field radius: 0.814 degrees

Locations: Le Bourdieu Observatory, La Romieu, France

Data source: Backyard

Description

M33, also called the Pinwheel Galaxy, is a member of our local Group, and is "only" 2.3 million light years away. Though it looks impressive, it is only a half the diameter of our own Milky Way Galaxy and a third of the size of M32, the Andromeda Galaxy.

At dark sites it's a naked eye object so it's probably not correct to say it was discovered by Charles Messier, but it was he who catalogued it in 1764.

Comments

Author

crfrancis
Richard Francis
License: Attribution-NonCommercial-NoDerivs Creative Commons
981
Like

Revisions

  • M33, 





    
        

            Richard Francis
    Original
  • M33, 





    
        

            Richard Francis
    B
  • M33, 





    
        

            Richard Francis
    C
  • M33, 





    
        

            Richard Francis
    D
  • Final
    M33, 





    
        

            Richard Francis
    E

B

I increased the colour saturation in Photoshop, by +45 of their units.

C

Updated with more data: 60 minutes Red, 70 minutes Green and 70 minutes Blue, followed by a new processing.

D

Added 10x600s of Luminance data and reprocessed. Saturation boost in Photoshop now limited to 25 of their units.

E

A new version (actually completed in May 2018), making use of more wisdom from Warren Keller's book

Sky plot

Sky plot

Histogram

M33, 





    
        

            Richard Francis