David's Astronomy Pages (Solar System)
Comets - 2007

Comet Images (2007) This page summarises observations and images of comets in 2007
Bullet P/2006 HR30 (Siding Spring) (Jan)
Bullet 4/P Faye (Feb/Mar)
Bullet C/2007 E2 (Lovejoy) (Apr/May)
Bullet C/2006 VZ13 (LINEAR) (May-Jul)
Bullet C/2006 OF2 (Broughton) (Sep)
Bullet 93P/Lovas (Oct-Nov)
Bullet C/2007 F1 (LONEOS) (Oct)
Bullet 17P/Holmes  (Oct/Nov)
Bullet 50P/Arend  (Nov)
Bullet 8P/Tuttle (Dec)

 


P/2006 HR30 (Siding Spring)

Comet P/2006 HR40 [Siding Spring] 
(passing through starfield near border between Cassiopeia and Andromeda)

Image 

Annotated CCD Image 
3 x 120s exposure (average combine, aligned on comet), 
2x2 binning, C filter,  Linear scale 
2007-01-20 19:02h UT (#17104-06)

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4/P Faye

Comet 4P/Faye - 2007-02-03
(passing through starfield in Taurus)

Image 

CCD Image 
3 x 120s exposure (average combine), 2x2 binning, C filter,  
Linear scale
2007-02-03 19:57h UT (#173051-53)

  

Comet 4P/Faye - 2007-03-12
(passing through starfield in Taurus)

Image 

CCD Image 
3 x 120s exposure (average combine), 2x2 binning, C filter,  
Linear scale
2007-03-12 21:27h UT (#182172-74)

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Comet C/2007 E2 (Lovejoy)

C/2007 E2 (Lovejoy) - 2007-04-27
(passing through star field in Hercules) 

 Image

Annotated CCD Image 
60s, 2x2 binning, C Filter
Linear Scale
2007-04-27 23:05 hUT (#192147)

  

C/2007 E2 (Lovejoy) - 2007-04-27, detail

 Image

CCD Image 
20 x 60s (average combine) 2x2 binning, C Filter
Linear Scale
2007-04-27 23:08 hUT (#192140-59)

  

Image

False Colour CCD Image 
Image Details as above
Log Scale, Inverse Spectrum

  

C/2007 E2 (Lovejoy) - 2007-04-27
Animation showing motion over 1 hour
60 sec exposures at 5 min intervals

Image 
CCD Image Animation
60s exposures, 2x2 binning, C Filter
Linear Scale
2007-04-27 22:47 to 23:46h UT (#192131-84)
[part of larger animation at 1 min intervals]

  

C/2007 E2 (Lovejoy) - 2007-05-15
(passing through star field in Draco) 

 Image

CCD Image 
5 x 60s, 2x2 binning, C Filter
Linear Scale
2007-05-15 01:31hUT (#197129-33)

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C/2006 VZ13 (LINEAR)

Comet C/2006 VZ13 - 2007-05-26
(passing through starfield in Andromeda)

Image
 CCD Image
3 x 120 sec exposure (average combine), 2x2 binning, C Filter, 
2007-05-26 01:07h UT (#200073-75)

Comet C/2006 VZ13 - 2007-07-14
(passing through starfield in Bootes)

Image
 CCD Image
3 x 60 sec exposure (average combine), 
manually aligned on comet, 
2x2 binning, C Filter, 
2007-07-14 23:48h UT (#202054-56)

  

Improved Align Method (auto-align)

Image
 CCD Image
3 x 60 sec exposure (average combine, 
auto-aligned on comet, 
2x2 binning, C Filter, 
2007-07-14 23:48h UT (#202054-56)

  

Comet C/2006 VZ13 - negative image

Image
Negative CCD Image
(Image details as above)

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C/2006 OF2 (Broughton)

C/2006 OF2 (Broughton) - 2007-09-19
passing through star field in Aquarius
Catalog mag +14.8 

Image
CCD Image (200% size)
3 x 120s exposure (median combine),  2x2 binning, 
C Filter, Linear brightness scaling
2007-09-19 20:29 hUT (#214010-12)
C/2006 OF2 (Broughton) - 2007-10-01
moving through starfield in Aquarius
Estimated mag +15.0 
Image
CCD Image, 
3 x 180 sec exposure (average combine), 2x2 binning, C Filter
Linear Scale
2007-10-01  21:48 h UT (#217135-37)

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93P/Lovas

93P/Lovas (moving through starfield in Pisces)
Estimated mag +14.8
Image
CCD Image, 
3 x 120 sec exposure (average combine), 2x2 binning, C Filter
Linear Scale
2007-10-01  21:21 h UT (#217114-16)
  
Comet 93P/Lovas - 2007-11-16
(moving through starfield in Andromeda)
Estimated mag +14.9
Image
CCD Image, 
3 x 120 sec exposure (average combine), 2x2 binning, C Filter
2007-11-16  20:57 h UT (#235197-99)
 

Animation -2007-10-01
showing motion of 93P/Lovas over 160 minutes
Image
CCD Image Animation (2 frames)
3 x 120 sec exposure (average combine), 
2x2 binning, C Filter, Linear Scale
2007-10-01  21:21 h UT (#217114-16)
2007-10-01  23:41 h UT (#217222-24)
  
Animation - 2007-11-16 
showing motion of 93P/Lovas over 121 minutes
Image
CCD Image Animation (2 frames)
3 x 120 sec exposure (average combine), 
2x2 binning, C Filter, Linear Scale
2007-11-16  20:57 h UT (#235197-99)
2007-11-16  22:58 h UT (#235292-94)

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C/2007 F1 (LONEOS)

C/2007 F1 (LONEOS)  
(passing through starfield in Coma Berenices) 

Image
CCD Image
6 x 60s exposure (average combine), 
2x2 binning, C Filter, Linear brightness scaling
2007-10-05 05:05 hUT (#219066-71)
  

C/2007 F1 (LONEOS)  

Image 
CCD Image
 60s exposure, 2x2 binning, C Filter, Linear brightness scaling
2007-10-05 05:03 hUT (#219066)
  

C/2007 F1 (LONEOS)  - detail

Image 
False Colour CCD Image 
Square root brightness scaling, False Colour (Cold)
Image details as above

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Comet 17P/Holmes 

Comet 17P/Holmes - Montage of Images -  2007-10-25 to 2007-11-16

Image 

CCD Image Montage (30% size)
Images from 2007-10-25 to 2007-11-16
2x2 binning, various exposures
[Larger Image,  50% size]

      

Comet 17P/Holmes - explosive eruption
Frames taken 2007-10-25 to 2007-10-30 showing rapidly expanding coma
 2007-10-25 (2.1 arc min diam) 
2007-10-29 (7.0 arc min diam)
2007-10-30 (9.3 arc min diam)
Sun Distance 2.54 AU, Earth Distance ?

Image
Animated CCD Images
5 x 10s exposure (average combine), 2x2 binning, C Filter, 
Log Scale
Frame 1 : 2007-10-25 20:45h UT (#227055-59)
Frame 2 : 2007-10-29 04:43h UT (#228038-42)
Frame 3 : 2007-10-30 04:47h UT (#229035-39)
      

Comet 17P/Holmes - explosive eruption
Rotational Gradient Processed Images taking on Oct 25th, 29th 30th, Nov 2nd, 3rd, 5th

Image
Animated CCD Images
Various Exposures
Rotational Gradient (15 deg)
      

Comet 17P/Holmes  - passing through starfield in Perseus,  2007-10-30

Image
CCD Image Mosaic (5 x 6), 35% size
20s exposure, 2x2 binning, C Filter, Log Scale
2007-10-30 04:57h UT (#229040-69)
[ 70% Size ]
      

Comet 17P/Holmes  - passing through starfield in Perseus,  2007-11-16
bright star in bottom left corner is the star Mirfak (Alpha Persei)

Image
Part of CCD Image Mosaic (6 x 7), 35% size
30s exposure, 2x2 binning, C Filter,  Linear Scale
2007-11-16 23:31h UT (#235301-42)
[ Full Mosaic, 70% Size ]
      

Comet 17P/Holmes  - passing through starfield in Perseus,  2007-11-28

Image
Part of CCD Image Mosaic (6 x 7), 35% size
30s exposure, 2x2 binning, C Filter,  Linear Scale
2007-11-28 21:22h UT (#237063-104)
[ Full Mosaic, 70% Size ]
      
Image
Part of CCD Image Mosaic (6 x 7), 35% size
30s exposure, 2x2 binning, C Filter,  Linear Scale
Rotational Gradient Processed (15 deg rotation)
2007-11-28 21:22h UT (#237063-104)
     

 


Comet 17P/Holmes - Sequence showing expanding coma
2007-10-25 to 2007-11-05
 Image 17P/Holmes, 2007-10-25
CCD Image, Log Scale

5 x 10s exposure (average combine), 
2x2 binning, C Filter, 
2007-10-25 20:45h UT (#227055-59)
  
 Image 17P/Holmes, 2007-10-29
CCD Image,  Log Scale

5 x 10s exposure (average combine), 
2x2 binning, C Filter
2007-10-29 04:43h UT (#228038-42)
[ Full Size ]
 
 Image 17P/Holmes, 2007-10-30
CCD Image, Log Scale

5 x 10s (average combine), 
2x2 Binning, C Filter
2007-10-29 04:47h UT (#229035-39)
 
 Image 17P/Holmes, 2007-11-02
Annotated CCD Image Mosaic (3 x 3)
Log Scale, Cropped

20s exposure, 
2x2 binning, C Filter, 
2007-11-02 22:57h UT (#230054-62)
[Full Size]
   
Image 17P/Holmes, 2007-11-05
Part of CCD Image Mosaic (3 x 3)
Linear Scale

20s exposure, 2x2 binning, C Filter, 
2007-11-05 19:45h UT (#233063-79)

(from Mosaic collected under poor sky condition, 
causing significant light balance problems)

 

    
Image
    Above : 
17P/Holmes, 2007-11-16
Part of CCD Image Mosaic (6 x 7)
Linear Scale

30s exposure, 2x2 binning, C Filter, 
2007-11-16 23:31h UT (#235301-42)
   

 

 


Comet 17P/Holmes - Sequence showing development of inner coma
2007-10-25 to 2007-11-05
17P/Holmes, 2007-10-25 Isophote Detail, 2007-10-25
 Image Image
CCD Image, Linear Scale
5 x 5s exposure (av. combine),  2x2 binning, C Filter, 
2007-10-25 20:38h UT (#227015-26)
False Colour CCD  Image
Square Root brightness scaling & Isophote Contoured, 
False Colour (Inverse Spectrum). Details as left.
 
17P/Holmes, 2007-10-29 Isophote Detail, 2007-10-29
 Image Image
CCD Image, Linear Scale
5 x 10s exposure (av. combine), 2x2 binning, C Filter, 
2007-10-29 04:43h UT (#228038-42)
False Colour CCD  Image
Square Root brightness scaling & Isophote Contoured, 
False Colour (Inverse Spectrum). Details as left
 
17P/Holmes, 2007-10-30 Isophote Detail, 2007-10-30
 Image Image
CCD Image (50% size), Linear Scale
20s exposure, 1x1 binning, C Filter, 
2007-10-30 04:44h UT (#229028)
False Colour CCD  Image (50% size)
Square Root brightness scaling & Isophote Contoured, 
False Colour (Inverse Spectrum).  Details as Left
 
17P/Holmes, 2007-11-02 Isophote Detail, 2007-11-02
 Image Image
CCD Image (50% size), Linear Scale
7 x 60s exposure (av. combine), 1x1 binning, C Filter, 
2007-11-02 22:44h UT (#230038-44) [ Full Size, 100%]
 False Colour CCD  Image (50% size)
Square Root brightness scaling & Isophote Contoured, 
False Colour (Inverse Spectrum).  Details as Left
  
17P/Holmes, 2007-11-03 Isophote Detail, 2007-11-03
Image Image
CCD Image (50% size), Linear Scale
7 x 60s exposure (av. combine), 1x1 binning, C Filter, 
2007-11-03 18:08h UT (#231055-61)
False Colour CCD  Image (50% size)
Square Root brightness scaling & Isophote Contoured, 
False Colour (Inverse Spectrum). Details as Left
 
17P/Holmes, 2007-11-04 Isophote Detail, 2007-11-04
Image Image
CCD Image (50% size), Linear Scale
7 x 60s exposure (av. combine), 1x1 binning, C Filter, 
2007-11-04 18:43h UT (#232032-38) 
False Colour CCD  Image (50% size)
Square Root brightness scaling & Isophote Contoured, 
False Colour (Inverse Spectrum). Details as Left
 
17P/Holmes, 2007-11-05 Isophote Detail, 2007-11-05 
 Image Image
CCD Image (50% size), Linear Scale
7 x 60s exposure (av. combine), 1x1 binning, C Filter, 
2007-11-05 18:56h UT (#233015-21)
False Colour CCD  Image (50% size)
Square Root brightness scaling & Isophote Contoured, 
False Colour (Inverse Spectrum). Details as left.
  
17P/Holmes, 2007-11-15 Isophote Detail, 2007-11-15 
 Image Image
CCD Image (50% size), Linear Scale
7 x 60s exposure (av. combine), 1x1 binning, C Filter, 
2007-11-16 20:00h UT (#234015-21)
False Colour CCD  Image (50% size)
Square Root brightness scaling & Isophote Contoured, 
False Colour (Inverse Spectrum). Details as left.
  
17P/Holmes, 2007-11-16 Isophote Detail, 2007-11-16 
 Image Image
CCD Image (50% size), Linear Scale
7 x 60s exposure (av. combine), 1x1 binning, C Filter, 
2007-11-16 19:23h UT (#235106-12)
False Colour CCD  Image (50% size)
Square Root brightness scaling & Isophote Contoured, 
False Colour (Inverse Spectrum). Details as left.
 
17P/Holmes, 2007-11-28 Isophote Detail, 2007-11-28 
 Image Image
CCD Image (50% size), Linear Scale
7 x 60s exposure (av. combine), 1x1 binning, C Filter, 
2007-11-28 20:57h UT (#237051-57)
False Colour CCD  Image (50% size)
Square Root brightness scaling & Isophote Contoured, 
False Colour (Inverse Spectrum). Details as left.
 

Comet 17P/Holmes - Sequence showing development of inner coma / jets
2007-10-25 to 2007-11-05
17P/Holmes, 2007-10-25 Detail, 2007-10-25
 Image Image
CCD Image, Linear Scale
5 x 5s exposure (av. combine),  2x2 binning, C Filter, 
2007-10-25 20:38h UT (#227015-26)
Processed CCD Image
Rotational Gradient Processing, 15 deg
.  Details as Left
 
17P/Holmes, 2007-10-29 Detail, 2007-10-29
 Image Image
CCD Image, Linear Scale
5 x 10s exposure (av. combine),  2x2 binning, C Filter, 
2007-10-29 04:43h UT (#228038-42)
Processed CCD Image
Rotational Gradient Processing, 15 deg
.  Details as Left
 
17P/Holmes, 2007-10-30 Detail, 2007-10-30
 Image Image
CCD Image (50% size), Linear Scale
20s exposure, 1x1 binning, C Filter, 
2007-10-30 04:44h UT (#229028)
Processed CCD Image
Rotational Gradient Processing, 15 deg
.  Details as Left
 
17P/Holmes, 2007-11-02 Detail, 2007-11-02
 Image Image
CCD Image (50% size), Linear Scale
7 x 60s exposure (av. combine), 1x1 binning, C Filter, 
2007-11-02 22:44h UT (#230038-44) [ Full Size, 100%]
 Processed CCD Image  (50% size)
Rotational Gradient Processing, 15 deg
. Details as left.
  
17P/Holmes, 2007-11-03 Detail, 2007-11-03
Image Image
CCD Image (50% size), Linear Scale
7 x 60s exposure (av. combine), 1x1 binning, C Filter, 
2007-11-03 18:08h UT (#231055-61)
Processed CCD Image  (50% size)
Rotational Gradient Processing, 15 deg
. Details as left.
    
17P/Holmes, 2007-11-04 Detail, 2007-11-04
Image Image
CCD Image (50% size), Linear Scale
7 x 60s exposure (av. combine), 1x1 binning, C Filter, 
2007-11-04 18:43h UT (#232032-38) 
Processed CCD Image  (50% size)
Rotational Gradient Processing, 20 deg
. Details as left.
 
17P/Holmes, 2007-11-05 Detail, 2007-11-05 
 Image Image
CCD Image (50% size), Linear Scale
7 x 60s exposure (av. combine), 1x1 binning, C Filter, 
2007-11-05 18:56h UT (#233015-21)
Processed CCD Image  (50% size)
Rotational Gradient Processing, 20 deg
. Details as left.
 
17P/Holmes, 2007-11-15 Detail, 2007-11-15 
 Image Image
CCD Image (50% size), Linear Scale
7 x 60s exposure (av. combine), 1x1 binning, C Filter, 
2007-11-16 20:00h UT (#234015-21)
Processed CCD Image  (50% size)
Rotational Gradient Processing, 15 deg
. Details as left.
 
17P/Holmes, 2007-11-16 Detail, 2007-11-16 
 Image Image
CCD Image (50% size), Linear Scale
7 x 60s exposure (av. combine), 1x1 binning, C Filter, 
2007-11-16 19:23h UT (#235106-12)
Processed CCD Image  (50% size)
Rotational Gradient Processing, 15 deg
. Details as left.
 

Comet 17P/Holmes - Colour image attempts
2007-10-25 to 2007-11-05
Image 17P/Holmes, 2007-10-25
Approximate Colour CCD Image

Red: 15s (R), Green: 15s (V),  Blue: 30s (B), 
2x2 Binning, Linear Scale
2007-10-25 20:50h UT (#227070-72)
Image 17P/Holmes, 2007-10-29
Approximate Colour CCD Image 

Red: 3x15s (R), Green: 3x15s (V),  Blue: 6x30s (B), 
2x2 Binning, Linear Scale
2007-10-29 04:46h UT (#228043-54)
Later images of 15P/Holmes on Comets 2021 Page >>    

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Comet 50P/Arend

Comet 50P/Arend  - 2007-11-16
(moving through starfield in Andromeda)
Image
CCD Image, 
3 x 120 sec exposure (average combine), 2x2 binning, C Filter
2007-11-16  21:09 h UT (#235203-05)

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Comet 8P/Tuttle

Comet 8P/Tuttle  - 2007-12-19
( passing by the +6 Mag star  13 Cassiopeiae,  Cassiopeia))

Image
CCD Image 
5 x 30s exposure (average combine), 2x2 binning, C Filter
2007-12-19 01:33h UT (#243346-50)

  

Comet 8P/Tuttle - 2007-12-19

Image
CCD Image 
60s exposure , 2x2 binning, C Filter
2007-12-19 01:14h UT (#243329)

  

Comet 8P/Tuttle  - 2007-12-22
(passing through star field in Cassiopeia)

Image
Animated Sequence of CCD Images (8 frames)
60s exposures , 2x2 binning, C Filter
2007-12-22 23:22h UT (#245766-845)
[ Part of a larger 2.5 MB animation of 80 frames ]
  
Image 
Stacked CCD Images (25 frames)
25 x 60s exposures (average combine) , 2x2 binning, C Filter
2007-12-22 23:24h UT (#245790-814)
  

Comet 8P/Tuttle  - 2007-12-27
( passing through starfield in Andromeda)

Image
CCD Image 
3 x 30s exposure , 2x2 binning, C Filter
Aligned on comet
2007-12-27 18:16h UT (#248127-35)

   

Comet 8P/Tuttle - colour image, 2007-12-19

Image
Approximate Colour CCD Image  (CBVR)
Luminance : av 3x 30s (C),
Red : av 3 x 30s (R), Green : av 3 x 30s (V), Blue : av 5 x 60s (B)
2007-12-19 01:21h UT (#243330-42)

   

Comet 8P/Tuttle - colour image, 2007-12-22

Image
Approximate Colour CCD Image  (CBVR)
Luminance : av 3x 30s (C),
Red : av 3 x 30s (R), Green : av 3 x 30s (V), Blue : av 3 x 60s (B)
2007-12-22 18:09h UT (#245554-65)
  

Comet 8P/Tuttle - colour image, 2007-12-27

Image
Approximate Colour CCD Image  (CBVR)
Luminance : av 3x 30s (C),
Red : av 3 x 30s (R), Green : av 3 x 30s (V), Blue : av 5 x 60s (B)
2007-12-27 18:17h UT (#248127-38)
  

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