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Messier 39 | by infinitalavita
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Messier 39

Constellation: Cygnus.

Session: 31 Jul 2019.

 

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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.

 

Source: Wikipedia

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• Optics: Takahashi FSQ-85EDX super apo (quadruplet 85/450).

• Mount: Skywatcher N-EQ6 Pro.

• Filters: ---.

• Accessories: QHYCCD QHYCFW-2-M motorized filter wheel, Primalucelab Sesto Senso, Primalucelab Eagle 3S.

• Camera: QHY163C color camera.

 

Lights: 60x120s | binning 1x1 | Gain 60 | Offset 30 | cooled - 10°c.

 

Integration: 2 hours.

Correction: Darks, Flats, Bias

 

Notes: Cropped, light polluttion.

 

Pixinsight, Adobe Photoshop.

 

© www.infinitalavita.com • Cristian Cestaro

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Taken on July 31, 2019