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Dark Horse Observatory - Image Details: Comet Holmes
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Image Details: Comet Holmes

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Comet Holmes

Object/Name: C 17P/Holmes Image Details:
Type: Comet Luminance:0.50 min. (10) – 5.00 min. 1x1
Constellation: Perseus Red:0.50 min. (10) – 5.00 min. 1x1
RA: Green:0.75 min. (18) – 13.50 min. 1x1
Dec: +0 degreees Blue:0.75 min. (18) – 13.50 min. 1x1
Distance: 0.0 light years Total Time:37 minutes
Magnitude: 0 mag   
Size: 0.0 x 0.0 arc minutes   
Imaging Dates: 29 October 2007 - 30 November -0001   
Location: Dark Horse Observatory, Kimberton, PA 19460 U.S.A.   
Equipment:
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:
  CCDStack MiraPro Professional
Photoshop CS2 Russel Croman’s Gradient Xterminator
Noel Carboni’s Astronomy Tools  
Detailed Information:
This comet surprised observers by suddenly increasing in brightness and size. It eventually was larger than the moon. The tail was difficult to visualize as it was directed mainly away from earth and only slightly oblique in orientation. Careful inspection of the image reveals a slight elongation in the region of the core that represents some of the comet's tail structure.

The image was created by doing two series of combines. The first was on the comet core resulting in blurred stars. Then a second combine using the stars to align was created blurring the comet. After selectively removing the stars from the first and the comet from the second image, the two were combined to create this image.

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