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Comets - 2011

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Comet Images (2011) This page summarises observations and images of comets in 2011
Bullet C/2009 P1 (Garradd) (Aug-Oct)

C/2009 P1 (Garradd) - Comet

 

C/2009 P1 (Garradd)  - 2011-08-25
 (moving through starfield in Sagitta)
Image
CCD Image (50% size)
30 sec exposure (single frame), 3x3 binning, C Filter 
2011-08-25 21:25 h UT  (#477009)
12" LX200R  (at f/9.7) + ST-10XME

 

C/2009 P1 (Garradd) - detail on 2011-08-25
Image
CCD Image (75% size)
Square root scaling
30 sec exposure (single frame), 3x3 binning, C Filter 
2011-08-25 21:25 h UT  (#477009)
12" LX200R  (at f/9.7) + ST-10XME

 

C/2009 P1 - colour image on 2011-10-01
Image
Approximate Colour CCD Image (75% size)
2 x 30s - R Filter, 2x30s - V Filter,  2 x 60s - B Filter
2011-11-01 20:05h UT (#482048-56)
12" LX200R  (at f/9.7) + ST-10XME

 

C/2009 P1 - motion through Hercules on 2011-10-03
(CCD Animation . moving through starfield in Hercules)
2 frames show 66 arc sec movement of the comet over a period of 77 minutes.
This corresponds to a motion of 52 arc sec/hour 
Image
CCD Image Animation (60% size, cropped)
3x3 binning, C Filter
Frame 1: 5x 30 sec (average combine), 2011-10-03 20:39h UT (#479017-23)
Frame 2: 2x 30 sec (average combine), 2011-10-03 21:56h UT (#479121-22)
12" LX200R  (at f/9.7) + ST-10XME

 

C/2009 P1 - ion tail (2011-10-01)
Image showing what appears to be a faint ion tail (not seen 5 days beforehand)
Image
CCD Image (Square root scaling, 50% size)
3x 45s (average combine), 3x3 binning, C Filter
2011-11-01 20:10h UT (#482055-57)
12" LX200R  (at f/9.7) + ST-10XME

 

C/2009 P1 - ion tail (2011-10-01)
Image showing what appears to be an ion tail 
Image
False Colour CCD Image (Square root scaling, 50% size)
3x 45s (average combine), 3x3 binning, C Filter
2011-11-01 20:10h UT (#482055-57)
12" LX200R  (at f/9.7) + ST-10XME

 

 

False Colour Images of C/2009 P1 (Garradd) 
Square Root Scaling, Inverse Spectrum Colour Bar

 False Colour CCD Images (50% size)
Image 2011-08-25
(in Sagitta)
 
30 sec exposure (single frame), 
3x3 binning, C Filter 
2011-08-25 21:25 h UT  (#477009)
12" LX200R  (at f/9.7) + ST-10XME

Sun Distance 2.23 AU

 
Image 2011-09-29
(in Hercules)
 
2 x 30 sec exposure (average combine), 
3x3 binning, C Filter 
2011-09-29 21:23 h UT  (#478030-35)
12" LX200R  (at f/9.7) + ST-10XME

Sun Distance 1.93 AU
 
Image

2011-10-03 
(in Hercules)
 
5x 30 sec (average combine), 
3x3 binning, C Filter
2011-10-03 20:39h UT (#479017-23)
12" LX200R  (at f/9.7) + ST-10XME

Sun Distance 1.90 AU

Image 

2011-10-27
(in Hercules)

4 x 30 sec exposure (average combine), 
3x3 binning, C Filter 
2011-10-27 20:31 h UT  (#481022-27)
12" LX200R  (at f/9.7) + ST-10XME

Sun Distance 1.73 AU

Image 

2011-11-01
(in Hercules)

4 x 30 sec exposure (average combine), 
3x3 binning, C Filter 
2011-11-01 20:00 h UT  (#482042-47)
12" LX200R  (at f/9.7) + ST-10XME

Sun Distance 1.71 AU

Ion tail developing

Image 

2011-11-27
(in Hercules)

7 x 30 sec exposure (average combine), 
3x3 binning, C Filter 
2011-11-27 20:02 h UT  (#488003-09)
12" LX200R  (at f/9.7) + ST-10XME

Sun Distance 1.59 AU

Image 

2011-12-15
(in Hercules)

5 x 30 sec exposure (average combine), 3x3 binning, C Filter 
2011-12-15 18:31 h UT  (#490100-05)
12" LX200R  (at f/9.7) + ST-10XME

Sun Distance 1.55 AU

Image 

2012-03-26
(in Ursa Major)

5 x 30 sec exposure (average combine), 3x3 binning, C Filter 
2012-03-26 21:59 h UT  (#507042-46)
12" LX200R  (at f/9.7) + ST-10XME

Sun Distance 2.00 AU

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This Web Page: Comet Images - 2011
Last Updated : 2015-05-15
Site Owner : David Richards
Home Page : David's Astronomy Web Site