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





    
        

            Mark Spruce
M33 - Triangulum Galaxy

M33 - Triangulum Galaxy

Technical card

Resolution: 1383x1034

Dates:Oct. 26, 2016

Frames: 14x600"

Integration: 2.3 hours

Avg. Moon age: 25.70 days

Avg. Moon phase: 15.73%

Astrometry.net job: 1330893

RA center: 23.554 degrees

DEC center: 30.737 degrees

Pixel scale: 1.057 arcsec/pixel

Orientation: -5.353 degrees

Field radius: 0.254 degrees

Locations: Observatory, Wolverhampton, West Midlands, United Kingdom

Description

I'm pleased with this image given that the first subframe was smeared badly due to tracking errors caused by cloud. That cleared and stayed away until 5 minutes after the last frame that I took. I'm delighted with the detail that captured, especially that of NGC604.

M33 is a spiral galaxy approximately 3Mly from Earth and is part of our local group of galaxies. It is believed that it is a satellite galaxy of M31 (the Andromeda Galaxy) due to their gravitational interactions. NGC604 and NGC595 are large H II regions in the galaxy and are highly active. NGC604 is approximately 1500 light years across, over 40 times larger than the Orion Nebula and over 6300 times more luminous.

Comments

Author

toxophilus
Mark Spruce
License: Attribution-NonCommercial-NoDerivs Creative Commons
1791
Like

Revisions

  • M33 - Triangulum Galaxy , 





    
        

            Mark Spruce
    Original
  • M33 - Triangulum Galaxy , 





    
        

            Mark Spruce
    B
  • Final
    M33 - Triangulum Galaxy , 





    
        

            Mark Spruce
    C

B

Re-processed the same data with Pixinsight 1.8. It has picked up a lot more detail and part of a spiral arm that I could not see before. I thought I had the edge of M33 but in reality its filling the frame! I have checked with other images and it is correct and not just poor processing. I'm rapidly becoming a big fan of PI.

C

Adjusted curves to bring out the outer spiral arms more and brighten the image a little, also added a bit of warmth to the core of the galaxy via a small change to the blue/yellow curve adjustment.

Sky plot

Sky plot

Histogram

M33 - Triangulum Galaxy , 





    
        

            Mark Spruce