Dark Horse Observatory

Dark Horse Observatory
Kimberton, PA US


Image Details: NGC 6946 (Caldwell 12)

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NGC 6946 (Caldwell 12)

Object/Name: NGC 6946 (Caldwell 12) Image Details:
Type: Galaxy - Mixed Spiral - (SABcd) Luminance IRB:10.00 min. (18) – 180.00 min. 1x1
Constellation: Cepheus Red:10.00 min. (12) – 120.00 min. 1x1
RA: 20 hours 34.9 minutes Green:10.00 min. (12) – 120.00 min. 1x1
Dec: +60 degreees 09 minutes Blue:10.00 min. (13) – 130.00 min. 1x1
Distance: 10.0 - 18.0 million light years Total Time:550 minutes
Magnitude: 8.8 mag   
Size: 8.8 x 11.2 arc minutes   
Imaging Dates: 14 August - 13 October 2007   
Location: Dark Horse Observatory, Kimberton, PA 19460 U.S.A.   
Telescope: Takahashi BRC-250 Mount: Mountain Instruments MI-250
CCD: SBIG ST-10XME Rotator: Optec Pxyis Rotator
Focuser: Finger Lakes Instruments DF2 Filters: Astrodon Series E
Software Used:
  CCDStack MiraPro Professional
Photoshop CS2 Russel Croman’s Gradient Xterminator
Noel Carboni’s Astronomy Tools  
Detailed Information:
NGC 6946 is a mixed spiral galaxy the has been the site of several supernovas. It was discovered by William Herschel in 1798. This galaxy is a member of the Coma-Sculptor Cloud like IC 342 and NGC 2403. It is located only 11 degrees off the plane of the Milky Way so it is obscured by gas and dust. While we see it as Mag 8.8., if this dust were removed it would be mag 7.2. It is quite near the open cluster, NCC 6939 and forms a nice pair in wide field views. This panorama can be seen below.

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