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Contains:  NGC 5195, Whirlpool galaxy, M 51, NGC 5194
Getting plate-solving status, please wait...
M51 - Whirlpool Galaxy - LRGB, 





    
        

            Greg Polanski
M51 - Whirlpool Galaxy - LRGB

M51 - Whirlpool Galaxy - LRGB

Technical card

Resolution: 1605x1224

Dates:April 11, 2019

Frames:
Baader 2" Blue: 14x180" (gain: 174.00) -15C bin 1x1
Baader 2" Green: 18x180" (gain: 174.00) -15C bin 1x1
Baader 2" Lum: 32x180" (gain: 174.00) -15C bin 1x1
Baader 2" Red: 16x180" (gain: 174.00) -15C bin 1x1

Integration: 4.0 hours

Darks: ~10

Bias: ~50

Avg. Moon age: 6.03 days

Avg. Moon phase: 35.83%

Bortle Dark-Sky Scale: 2.00

Temperature: -7.00

Astrometry.net job: 2693488

RA center: 202.476 degrees

DEC center: 47.186 degrees

Pixel scale: 1.152 arcsec/pixel

Orientation: 254.014 degrees

Field radius: 0.323 degrees

Locations: The Dark Sky Preserve in North Frontenac, Plevna, ON, Canada

Data source: Traveller

Comments

Author

Impact011
Greg Polanski
License: None (All rights reserved)
2991
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Revisions

  • M51 - Whirlpool Galaxy - LRGB, 





    
        

            Greg Polanski
    Original
  • M51 - Whirlpool Galaxy - LRGB, 





    
        

            Greg Polanski
    B
  • M51 - Whirlpool Galaxy - LRGB, 





    
        

            Greg Polanski
    C
  • M51 - Whirlpool Galaxy - LRGB, 





    
        

            Greg Polanski
    D
  • Final
    M51 - Whirlpool Galaxy - LRGB, 





    
        

            Greg Polanski
    E

C

Added bit of Ha

D

Tweaked colors to have more natural look. Still not sure which one is better version C or D...

E

Bit more saturation.

Sky plot

Sky plot

Histogram

M51 - Whirlpool Galaxy - LRGB, 





    
        

            Greg Polanski