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Dark Horse Observatory - Image Details: NGC 6207 and M013
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Image Details: NGC 6207 and M013

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NGC 6207 and M013

Object/Name: NGC 6207 Image Details:
Type: Galaxy SA (s)c III Luminance IRB:5.00 min. (20) – 100.00 min. 1x1
Constellation: Hercules Red:5.00 min. (18) – 90.00 min. 1x1
RA: 16 hours 43.1 minutes Green:5.00 min. (18) – 90.00 min. 1x1
Dec: +36 degreees 5 minutes Blue:5.00 min. (19) – 95.00 min. 1x1
Distance: 30.0 - 45.0 million light years Total Time:375 minutes
Magnitude: 11.6 mag   
Size: 1.7 x 3.3 arc minutes   
Imaging Dates: 5 August 2007 - 14 August 2008   
Location: Dark Horse Observatory, Kimberton, PA 19460 U.S.A.   
Telescope: Takahashi BRC-250 Mount: Mountain Instruments
CCD: SBIG ST-10XME Rotator: Optec Pxyis Rotator
Focuser: Finger Lakes Instruments DF2 Filters: Astrodon Series E
Software Used:
  MaximDL v 1.45 FocusMax
The Sky 6 CCDAutoPilot3
CCDStack MiraPro
PS CS3 RC Gradient Xterminator
Kodak GEM noise reduction Noel Carboni’s Photoshop Tools
Detailed Information:
Visible in this image at the left edge is the galaxy, NGC 6207 which was the site of a recent type II supernova, SN2004A. NGC 6207 is only magnitude 12.2 and spans only 3.3’ x 1.7’. It is estimated to be at a distance of 22 million light years, therefore its appearance in the image reflects a background object. An even smaller and fainter galaxy, IC 4617, located between the other two objects is also captured in this image. IC4617 has a brightness of magnitude 15.5 and is only 1.2’ x o.4’in apparent size.

M13, the great globular cluster in Hercules shines at a magnitude of 5.8 with an apparent size of 20 arc minutes corresponding to a diameter of 145 light years. It is located at a distance of approximately 25,100 light years. This globular cluster is estimated to contain several 100,000 stars. It was first discovered by the English astronomer Edmond Halley and was cataloged by Charles Messier on June 1, 1764.

One interesting feature of M13 are the presence of several star-poor regions three of which form the shape of a three-bladed propeller, hence its appellation, “the propeller.” This is visible in the central region of this image. Additionally, M13 contains one young blue star, Barnard No. 29. Since globular clusters are relatively old it is postulated that this was a captured field star.

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