* click on image for larger view *
- Description: NGC6939 is a bright open star cluster in Cepheus, shining brightly at magnitude 7.8. It is 7 arc minutes in size.
Also known as Herschel H VI-42. Next to it is face-on galaxy NGC6946, right on the Cepheus-Cygnus border. It is heavily reddened
by dust in our galaxy but still shines at magnitude 9.6 and measures 11.6 x 9.8 arc minutes in size. Also visible are some faint clouds
of dust in our galaxy which permeate Cepheus.
- Camera: ZWO ASI533MC Pro at -15C, gain 0
- Filter: UV/IR
- Scope: Takahashi FSQ106, 530mm f5
- Mount: Skywatcher EQ6-R Pro
- Exposure: 15 x 10 minutes or 2 hours, 30 minutes
- Guiding: ASI210MM via ZWO OAG
- System Control: ASI Air+
- Location: near Elkwater, Alberta
- Date: September 24 2025
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