Collinder 399 "The Coathanger" – Asterism in Vulpecula

    Description: - Collinder 399, commonly known as "The Coathanger" as it easily looks like a coathanger in binoculars, is also known as Brocchi's Cluster. 10 bright stars with 6 in a near straight line across its bottom, and 4 making the hook opening to the Left. North is down in this image to make the asterism look more apparent. This is also a busy part of our Milky Way with lots of dust lanes, clusters and nebulosity.

    Also Visible:

    - NGC6802, Open Cluster, just to the right of the last blue star of Collinder 399;

    - Sharpless 2-83, a small bright red emission nebula in the lower left quadrant;

    - the blue glow around the stars in the bottom middle is believed to be Galactic Nebula GN19.25.0 or LBN 130. Very little is known about GN19.25.0/LBN130.

  • Camera: SBIG STT-8300M @ -35C Sensor Temperature

  • Filter: Baader RGB

  • Scope: Astro-Physics 92 Stowaway with 92TCC yielding 488mm focal length at f/5.3

  • Guiding: SBIG FW8G

  • Exposure: 7 x 10 minutes each of Blue, Green then Red for 210 minutes total exposure time.

  • Location: near Cluny, Alberta under Bortle 4 skies (21.03mpsas towards target)

  • Date: 2023-10-07, at +12C and 62%Rh

  • Processed in PixInsight with RCAstro tools and SPCC.

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