Last updated on 10/26/2014

Comet c2012 S1 ISON

Composite    Star trails    Inverted

0bject Comet c2012 S1 ISON
Date November 18, 2013
Exposure LRGB 10:10:10:10 (binned 2x2, cropped)
Camera STL11000M with AstroDon Gen II filters  water-assisted cooling
Telescope ASA 10N f/3.7 on AP900GTO CP3
Guiding Remote guide head with MiniBorg 50 mm
Processing MaximDL, Photoshop CS5, GradientXterminator
Comments Low in the twilight; guided on comet


  Inverted    False color

0bject Comet c2012 S1 ISON
Date November 14, 2013
Exposure Luminance only 10 x 180 sec (cropped)
Camera STL11000M with AstroDon Gen II filters  water-assisted cooling
Telescope ASA 10N f/3.7 on AP900GTO CP3
Guiding Remote guide head with MiniBorg 50 mm
Processing MaximDL, Photoshop CS5, GradientXterminator
Comments Moderate seeing; guided on comet


  Inverted

0bject Comet c2012 S1 ISON
Date November 13, 2013
Exposure LRGB 10:10:10:10  (cropped)
Camera STL11000M with AstroDon Gen II filters  water-assisted cooling
Telescope ASA 10N f/3.7 on AP900GTO CP3
Guiding Remote guide head with MiniBorg 50 mm
Processing MaximDL, Photoshop CS5, GradientXterminator
Comments Moderate seeing; guided on comet


  Inverted

0bject Comet c2012 S1 ISON
Date November 7, 2013
Exposure LRGB 10:10:10:10  (cropped)
Camera STL11000M with AstroDon Gen II filters  water-assisted cooling
Telescope ASA 10N f/3.7 on AP900GTO CP3
Guiding Remote guide head with MiniBorg 50 mm
Processing MaximDL, Photoshop CS5, GradientXterminator
Comments Excellent seeing

  Inverted

0bject Comet c2012 S1 ISON
Date November 3, 2013
Exposure RGB 10:10:10  (cropped)
Camera STL11000M with AstroDon Gen II filters  water-assisted cooling
Telescope ASA 10N f/3.7 on AP900GTO CP3
Guiding Remote guide head with MiniBorg 50 mm
Processing MaximDL, Photoshop CS5, GradientXterminator
Comments Very good seeing


   Inverted with trails    Animation

0bject Comet c2012 S1 ISON
Date October 28, 2013
Exposure RGB 30:30:30  (cropped)
Camera STL11000M with AstroDon Gen II filters  water-assisted cooling
Telescope ASA 10N f/3.7 on AP900GTO CP3
Guiding Remote guide head with MiniBorg 50 mm
Processing MaximDL, Photoshop CS5, GradientXterminator
Comments Comet about 40 above horizon with last quarter moon in the sky


  Inverted with trails

0bject Comet c2012 S1 ISON
Date October 27, 2013
Exposure RGB 20:20:20  (cropped)
Camera STL11000M with AstroDon Gen II filters  water-assisted cooling
Telescope ASA 10N f/3.7 on AP900GTO CP3
Guiding Remote guide head with MiniBorg 50 mm
Processing MaximDL, Photoshop CS5, GradientXterminator
Comments Comet about 39 above horizon; some high thin clouds passing through


0bject Comet c2012 S1 ISON
Date October25, 2013
Exposure RGB 30:30:30  (cropped)
Camera STL11000M with AstroDon Gen II filters  water-assisted cooling
Telescope ASA 10N f/3.7 on AP900GTO CP3
Guiding Remote guide head with MiniBorg 50 mm
Processing MaximDL, Photoshop CS5, GradientXterminator
Comments Comet about 35 above horizon; cold with frost


  Inverted

0bject Comet c2012 S1 ISON passing Mars
Date October 20, 2013
Exposure RGB 28:28:28 (cropped)
Camera STL11000M with AstroDon Gen II filters  water-assisted cooling
Telescope ASA 10N f/3.7 on AP900GTO CP3
Guiding Remote guide head with MiniBorg 50 mm
Processing MaximDL, Photoshop CS5, GradientXterminator, AstroActions
Comments Comet about 40 above horizon in twilight with waxing moon in the West


  Inverted

0bject Comet c2012 S1 ISON
Date October 18, 2013
Exposure RGB 30:30:30  (cropped)
Camera STL11000M with AstroDon Gen II filters  water-assisted cooling
Telescope ASA 10N f/3.7 on AP900GTO CP3
Guiding Remote guide head with MiniBorg 50 mm
Processing MaximDL, Photoshop CS5, GradientXterminator
Comments Comet about 30 above horizon in twilight with full moon in the West


  Inverted

0bject Comet c2012 S1 ISON
Date October 13, 2013
Exposure RGB 20:20:20  (cropped)
Camera STL11000M with AstroDon Gen II filters  water-assisted cooling
Telescope ASA 10N f/3.7 on AP900GTO CP3
Guiding Remote guide head with MiniBorg 50 mm
Processing MaximDL, Photoshop CS5, GradientXterminator
Comments Comet about 28 above horizon in twilight


  1.3X crop    1.3X crop trails

0bject Comet c2012 S1 ISON
Date October 4, 2013
Exposure RGB 10:10:10  (cropped)
Camera STL11000M with AstroDon Gen II filters  water-assisted cooling
Telescope ASA 10N f/3.7 on AP900GTO CP3
Guiding Remote guide head with MiniBorg 50 mm
Processing MaximDL, Photoshop CS5
Comments Comet about 25 above horizon in twilight


1.5X crop    Inverted w/trails

0bject Comet c2012 S1 ISON
Date September 26, 2013
Exposure Luminance only 3 x  120 sec  and 20 x 120 sec (cropped)
Camera STL11000M with AstroDon Gen II filters  water-assisted cooling
Telescope ASA 10N f/3.7 on AP900GTO CP3
Guiding Remote guide head with MiniBorg 50 mm
Processing MaximDL, Photoshop CS5
Comments Comet about 25 above horizon in twilight


  1.3X Crop     Inverted w/ trails

0bject Comet c2012 S1 ISON
Date September 22, 2013
Exposure Luminance only 3 x  120 sec  and 18 x 120 sec (cropped)
Camera STL11000M with AstroDon Gen II filters  water-assisted cooling
Telescope ASA 10N f/3.7 on AP900GTO CP3
Guiding Remote guide head with MiniBorg 50 mm
Processing MaximDL, Photoshop CS5
Comments Comet about 28 above horizon in twilight with full moon high over head


  Inverted w/ trails

0bject Comet c2012 S1 ISON
Date September 14, 2013
Exposure Luminance only 3 x  120 sec  and 10 x 120 sec (cropped)
Camera STL11000M with AstroDon Gen II filters  water-assisted cooling
Telescope ASA 10N f/3.7 on AP900GTO CP3
Guiding Remote guide head with MiniBorg 50 mm
Processing MaximDL, Photoshop CS5
Comments Comet about 25 above horizon in twilight


  Inverted

0bject Comet c2012 S1 ISON
Date September 11, 2013
Exposure Luminance only 3 x  120 sec  and 10 x 120 sec (cropped)
Camera STL11000M with AstroDon Gen II filters  water-assisted cooling
Telescope ASA 10N f/3.7 on AP900GTO CP3
Guiding Remote guide head with MiniBorg 50 mm
Processing MaximDL, Photoshop CS5
Comments Comet about 25 above horizon in twilight


  Inverted 1.3X

0bject Comet c2012 S1 ISON
Date September 3, 2013
Exposure Luminance only 3 x  120 sec  and 10 x 120 sec (cropped)
Camera STL11000M with AstroDon Gen II filters  water-assisted cooling
Telescope ASA 10N f/3.7 on AP900GTO CP3
Guiding Remote guide head with MiniBorg 50 mm
Processing MaximDL, Photoshop CS5
Comments Comet about 18� above horizon in twilight


  Inverted

0bject Comet c2012 S1 ISON
Date August 29, 2013
Exposure Luminance only 10 x 60sec  (cropped)
Camera STL11000M with AstroDon Gen II filters  water-assisted cooling
Telescope ASA 10N f/3.7 on AP900GTO CP3
Guiding Remote guide head with MiniBorg 50 mm
Processing MaximDL, Photoshop CS5
Comments Warm; comet low in eastern twilight 15 degrees above horizon; last quarter moon


0bject Comet c2012 S1 ISON
Date May 11, 2012
Exposure Luminance only 10 x 60sec  (cropped)
Camera STL11000M with AstroDon Gen II filters  water-assisted cooling
Telescope ASA 10N f/3.7 on AP900GTO CP3
Guiding Remote guide head with MiniBorg 50 mm
Processing MaximDL, Photoshop CS5
Comments Cool and Clear


0bject Comet c2012 S1 ISON
Date January 14, 2012
Exposure LRGB 6:6:6:6  (cropped)
Camera STL11000M with AstroDon Gen II filters
Telescope ASA 10N f/3.7 on AP900GTO CP3
Guiding Remote guide head with MiniBorg 50 mm
Processing MaximDL, Photoshop CS5
Comments Moderate seeing, very cold