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
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M39 Open Star Cluster in Cygnus

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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.

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  • 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