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Contains:  M 39, NGC 7092
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M39, 





    
        

            Thomas Richter
M39

M39

Technical card

Resolution: 5439x3607

Dates:June 25, 2019

Frames:
Baader B 1.25'' CCD Filter: 15x240" (gain: 53.00) -20C bin 1x1
Baader G 1.25'' CCD Filter: 15x240" (gain: 53.00) -20C bin 1x1
Baader R 1.25'' CCD Filter: 15x240" (gain: 53.00) -20C bin 1x1

Integration: 3.0 hours

Darks: ~37

Flats: ~31

Bias: ~100

Avg. Moon age: 22.23 days

Avg. Moon phase: 49.08%

Astrometry.net job: 2793308

RA center: 21h 31' 46"

DEC center: +48° 28' 4"

Pixel scale: 0.493 arcsec/pixel

Orientation: 88.291 degrees

Field radius: 0.447

Locations: Nürnberg, Nürnberg, Bayern, Germany

Data source: Backyard

Description

Object description (wikipedia.org):

Messier 39 or M39, also known as NGC 7092, is an open cluster of stars in the constellation of Cygnus, positioned two degrees to the south of the star Pi Cygni and around 9° east-northeast of Deneb. The cluster was discovered by Guillaume Le Gentil in 1749, then Charles Messier added it to his catalogue in 1764. When observed in a small telescope at low power the cluster shows around two dozen members, but it is best observed with binoculars. It has a total integrated magnitude (brightness) of 5.5 and spans an angular diameter of 29 arcminutes – about the size of the full Moon. M39 is at a distance of about 1,010 light-years (311 parsecs) from the Sun.

Comments

Author

superelch
Thomas Richter
License: None (All rights reserved)
3222
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Revisions

  • M39, 





    
        

            Thomas Richter
    Original
  • Final
    M39, 





    
        

            Thomas Richter
    B

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M39, 





    
        

            Thomas Richter