Comet C/2007 Q3 Siding Spring

Star trail view

Inverted monochrome

0bject	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

0bject	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 (17º F)

0bject	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 (15º F)

Inverted monchrome view Stars & Comet Larson-Sekanina filter

0bject	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 (12º F) with a bright moon (1 day past full) high in the sky. Tail appears to be about 28 arcminutes.

Inverted monochrome view

0bject	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 (20º F)

Inverted view

0bject	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 (4º F); 3rd quarter moon nearby

Inverted view

0bject	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

0bject	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

Inverted view

0bject	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

5 minute integration (mono)

0bject	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

Inverted view

Inverted 5 minute view

0bject	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	27º Altitude, Bright waning moon high in the sky

Inverted 3x120

0bject	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	30º Altitude, beginning of morning twilight