Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  M 39  ·  NGC 7092
M39 Open Star Cluster in Cygnus, 



    
        

            Mike Oates
M39 Open Star Cluster in Cygnus
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M39 Open Star Cluster in Cygnus

M39 Open Star Cluster in Cygnus, 



    
        

            Mike Oates
M39 Open Star Cluster in Cygnus
Powered byPixInsight

M39 Open Star Cluster in Cygnus

Acquisition details

Dates:
Oct. 1, 2017
Frames:
Blue: 30×60(30′) bin 1×1
Green: 23×60(23′) bin 1×1
Ha 3nm: 17×600(2h 50′) bin 2×2
Red: 30×60(30′) bin 1×1
Integration:
4h 13′
Avg. Moon age:
10.46 days
Avg. Moon phase:
80.45%
Bortle Dark-Sky Scale:
8.00
Mean SQM:
18.50

Basic astrometry details

Astrometry.net job: 1769090

RA center: 21h32m17s.3

DEC center: +48°2132

Pixel scale: 1.435 arcsec/pixel

Orientation: 359.945 degrees

Field radius: 0.854 degrees

Resolution: 3266x2770

File size: 6.6 MB

Locations: The Hills Observatory, Manchester, United Kingdom

Data source: Backyard

Description

The first image is how you would normally see the cluster in RGB

The second is with an extra 17 x 600s bin2x2 exposures added.

As far as I know this could be the first time M39 has been shown against a backdrop of Ha nebulosity. The Ha is pretty faint and has to be pushed a bit to get it out of the noise.

The image started out as a quick image in RGB taken in less than 90 mins, very quick for me and I wanted to demonstrate that you don't have to take long exposures to get some great looking images.

When I was processing the image I could see that there are areas of dust and I took it further to try and show this better. I tried a Ha filter which seemed to work, so took some more.

Comments

Revisions

  • M39 Open Star Cluster in Cygnus, 



    
        

            Mike Oates
    Original
  • Final
    M39 Open Star Cluster in Cygnus, 



    
        

            Mike Oates
    B

B

Description: With Ha added

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M39 Open Star Cluster in Cygnus, 



    
        

            Mike Oates