Last updated on 10/26/2014

Comet C/2007 Q3 Siding Spring

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C/2007 Q3 Siding Spring & NGC 5907
Date March 18, 2010
Exposure Luminance only 10 x 60 seconds
Camera STL11000M with Astronomik filters
Telescope ASA 10N f/3.7 on AP900GTO CP3
Guiding Remote guide head with MiniBorg 50mm
Processing MaximDL, PhotoshopCS3; GradientXterminator
Comments Mild with some light ground fog


  Star trail view  Inverted monochrome

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C/2007 Q3 Siding Spring
Date March 5, 2010
Exposure LRGB 20:20:20 (median combined + stars;  cropped)
Camera STL11000M with Astronomik filters
Telescope ASA 10N f/3.7 on AP900GTO CP3
Guiding Remote guide head with MiniBorg 50mm
Processing MaximDL, PhotoshopCS3; GradientXterminator
Comments Clear and  cold with bright last quarter moon high in the sky


  Monochrome inverted

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C/2007 Q3 Siding Spring
Date February 17, 2010
Exposure LRGB 20:20:20 (Luminance from R+G+B; cropped)
Camera STL11000M with Astronomik filters
Telescope ASA 10N f/3.7 on AP900GTO CP3
Guiding Remote guide head with MiniBorg 50mm
Processing MaximDL, PhotoshopCS3
Comments Clear and  cold (17� F)


Click for full resplution

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C/2007 Q3 Siding Spring
Date February 10, 2010
Exposure RGB 10:10:10 (stacked on comet nucleus; cropped)
Camera STL11000M with Astronomik filters
Telescope ASA 10N f/3.7 on AP900GTO CP3
Guiding Remote guide head with MiniBorg 50mm
Processing MaximDL, PhotoshopCS3, GradientXterminator
Comments Clear and  cold (15� F)


Click for full resolution

Inverted monchrome view Stars & Comet Larson-Sekanina filter

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C/2007 Q3 Siding Spring
Date January 31, 2010
Exposure RGB 20:20:20 (stacked on comet nucleus; cropped)
Camera STL11000M with Astronomik filters
Telescope ASA 10N f/3.7 on AP900GTO CP3
Guiding Remote guide head with MiniBorg 50mm
Processing MaximDL, PhotoshopCS3, GradientXterminator
Comments Clear and  cold (12� F) with a bright moon (1 day past full) high in the sky. Tail appears to be about 28 arcminutes.


Click for full resolution

Inverted monochrome view

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C/2007 Q3 Siding Spring
Date January 13, 2010
Exposure RGB 30:30:30 (stacked on comet nucleus; cropped)
Camera STL11000M with Astronomik filters
Telescope ASA 10N f/3.7 on AP900GTO CP3
Guiding Remote guide head with MiniBorg 50mm
Processing MaximDL, PhotoshopCS3, GradientXterminator
Comments Clear and  cold (20� F)


Click for full resolution

Inverted view

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C/2007 Q3 Siding Spring
Date January 6, 2010
Exposure 15 x 2 minutes (stacked on comet nucleus; cropped)
Camera STL11000M with Astronomik filters
Telescope ASA 10N f/3.7 on AP900GTO CP3
Guiding Remote guide head with MiniBorg 50mm
Processing MaximDL, PhotoshopCS3, GradientXterminator
Comments Clear and  very cold (4� F); 3rd quarter moon nearby

Click for full resolution

Inverted view

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C/2007 Q3 Siding Spring
Date December 4, 2009
Exposure LRGB 15:15:15:15 (luminance synthesized from RGB, cropped)
Camera STL11000M with Astronomik filters
Telescope ASA 10N f/3.7 on AP900GTO CP3
Guiding Smartguide on Comet
Processing MaximDL, PhotoshopCS3, GradientXterminator
Comments Clear and  quite cold, waning moon high in the sky


Click for full resolution

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C/2007 Q3 Siding Spring
Date December 1, 2009
Exposure 3 x 5 minutes (cropped)
Camera STL11000M with Astronomik filters
Telescope ASA 10N f/3.7 on AP900GTO CP3
Guiding Smartguide on Comet
Processing MaximDL, PhotoshopCS3, GradientXterminator
Comments Clear and cold


Click for full resolution

Inverted view

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C/2007 Q3 Siding Spring
Date November 28, 2009
Exposure RGB 6:6:6 (cropped)
Camera STL11000M with Astronomik filters
Telescope ASA 10N f/3.7 on AP900GTO CP3
Guiding Remote guide head with Mini Borg 50
Processing MaximDL, PhotoshopCS3, GradientXterminator
Comments Clear and cold, moderate seeing


Click for full resolution

  5 minute integration (mono)

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C/2007 Q3 Siding Spring
Date November 7, 2009
Exposure RGB 10:10:10 (unfiltered & cropped)
Camera STL11000M with Astronomik filters
Telescope ASA 10N f/3.7 on Losmandy G11 with Gemini
Guiding Remote guide head with Mini Borg 50
Processing MaximDL, PhotoshopCS3, GradientXterminator
Comments Bright waning moon high in the sky


Click for full resolution

Inverted view  Inverted 5 minute view

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C/2007 Q3 Siding Spring
Date November 6, 2009
Exposure 15 x 120 seconds (unfiltered & cropped) and 300 seconds
Camera STL11000M
Telescope ASA 10N f/3.7 on Losmandy G11 with Gemini
Guiding Remote guide head with E-finder
Processing MaximDL, PhotoshopCS3, GradientXterminator
Comments 27� Altitude, Bright waning moon high in the sky

Click for full resolution

  Inverted 3x120

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C/2007 Q3 Siding Spring
Date November 1, 2009
Exposure 15 x 120 seconds (unfiltered & cropped)
Camera STL11000M
Telescope ASA 10N f/3.7 on Losmandy G11 with Gemini
Guiding Remote guide head with E-finder
Processing MaximDL, FITS Liberator, PhotoshopCS3
Comments 30� Altitude, beginning of morning twilight

                                    All text and images � Gregg L. Ruppel 1998-2009.