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



    
        

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

Getting plate-solving status, please wait...
M39 Open Star Cluster in Cygnus, 



    
        

            Mike Oates
M39 Open Star Cluster in Cygnus
Powered byPixInsight

M39 Open Star Cluster in Cygnus

Technical card

Imaging telescopes or lenses: Takahashi FSQ-106 ED

Imaging cameras: Starlight Xpress SX-814 Trius Monochrome CCD

Mounts: Sky-Watcher EZ-EQ6 GT

Guiding cameras: Starlight-XPress Lodestar Autoguider

Software: Sequence Generator Pro  ·  Photoshop CS6  ·  PIXINSIGHT 1.8

Filters: Ha 3nm  ·  Red  ·  Green  ·  Blue

Accessory: Lakeside Astro Motor Focus System  ·  Starlight Xpress SX 'Maxi wheel'  ·  Starlight Instruments FTF3545B-A Focuser


Dates:Oct. 1, 2017

Frames:
Blue: 30x60" (30') bin 1x1
Green: 23x60" (23') bin 1x1
Ha 3nm: 17x600" (2h 50') bin 2x2
Red: 30x60" (30') bin 1x1

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: 1769086

RA center: 21h 32' 17"

DEC center: +48° 21' 32"

Pixel scale: 1.435 arcsec/pixel

Orientation: 359.945 degrees

Field radius: 0.854 degrees


Resolution: 3266x2770

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

  • Final
    M39 Open Star Cluster in Cygnus, 



    
        

            Mike Oates
    Original
  • 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