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Contains:  M 3, NGC 5272
Getting plate-solving status, please wait...
M3 (LRGB), 



    
        

            Joel Shepherd
M3 (LRGB)
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M3 (LRGB)

Technical card


Resolution: 1400x1185

Dates:April 1, 2016

Frames:
Baader Planetarium B 1.25": 12x120" bin 1x1
Baader Planetarium G 1.25": 12x120" bin 1x1
Baader Planetarium L 1.25": 18x120" bin 1x1
Baader Planetarium R 1.25": 12x120" bin 1x1

Integration: 1.8 hours

Darks: 0

Flats: 0

Flat darks: 0

Bias: 0

Avg. Moon age: 22.99 days

Avg. Moon phase: 41.14%

Bortle Dark-Sky Scale: 6.00

Mean SQM: None

Mean FWHM: None

Temperature: None


Basic astrometry details

Astrometry.net job: 1026868

RA center: 13h 41' 30"

DEC center: +28° 28' 19"

Pixel scale: 1.880 arcsec/pixel

Orientation: 7.528 degrees

Field radius: 0.479 degrees


Locations: Home, Seattle, WA, United States

Description

M3: approximately half a million stars, about eight billion years old, and 33,900 light years distant. Discovered by Messier in 1764, resolved to stars by Herschel in 1784, and possessing an "unusually large variable star population."

Comments

Author

JoelShepherd
Joel Shepherd
License: Attribution Creative Commons
960
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Revisions

  • M3 (LRGB), 



    
        

            Joel Shepherd
    Original
  • Final
    M3 (LRGB), 



    
        

            Joel Shepherd
    B

Sky plot

Sky plot

Histogram

M3 (LRGB), 



    
        

            Joel Shepherd