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CCD Images - Session 117 (2006-04-26)

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Bullet Comet 73/P Schwassmann-Wachmann 3 (Fragments B, C, G, H, N, R)
Bullet Comet 73/P Schwassmann-Wachmann 3-B (Fragment B)
Bullet Comet 73/P Schwassmann-Wachmann 3-C (Fragment C)
Bullet HD 189733 - Star
- 6 hour session, run mainly under automated script control (weather forecast was sufficiently confident) that I was able to leave the observatory open under the morning. Last part of session was affected by brightening sky as daylight approached. 
- main aim was to record images of as many fragments of 73/P Schwassmann-Wachmann 3 as possible
- More Notes
-

Comet 73/P Schwassmann-Wachmann 3 (Fragments B, C, G, H, N, R)

Comet 73/P Schwassmann-Wachmann 3,   Fragments B, C, G, H, N, R
Note the similar and parallel movement shown by fragments between frames taken at periods of between 35 and 44 minutes apart
Image Image Fragment B

60 sec exposure
2x2, C Filter
Left:  #117056
Right: #117091
  
Image Image Fragment C

60 sec exposure
2x2, C Filter
Left:  #117061
Right: #117096
    
Image Image Fragment G

4 x 60 sec exposure
(sum combine)
2x2, C Filter
Left:  #117070-73
Right: #117106-09
  
Image Image Fragment H

4 x 60 sec exposure
(sum combine)
2x2, C Filter
Left:  #117075-78
Right: #117111-14
  
Image Image Fragment N

4 x 60 sec exposure
(sum combine)
2x2, C Filter
Left:  #117147-50
Right: #117182-85

(36 min apart)
Image Image Fragment R

4 x 60 sec exposure
(av combine)
2x2, C Filter
Left:  #117213-16
Right: #117245-48

(35 min apart)
  
Location Map showing positions of 73/P Schwassmann-Wachmann 3,  Fragments B, C, G, H
at 2006-04-26
Image
[ Map produced using TheSky software (Software Bisque)  
using Comet fragment ephemerides (from JPL) ]

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Comet 73/P Schwassmann-Wachmann 3-B (Fragment B) 

Comet 73/P Schwassmann-Wachmann 3 / Fragment B
( passing through star field in Corona Borealis)

This is a stacked image which is aligned on the comet,
stars appear to trail due to movement of the comet over a 4 minute period
Image
CCD Image
4 x 60 sec exposure (average combine, aligned on comet)
2x2 binning, C Filter,   Log brightness scaling
2006-04-26 23:41h UT (#117056-59)

Image
False Colour CCD Image (Fragment B)
Image details as above (#117056-59)

 

Animated Sequence of CCD Images
showing movement of Fragment B
over a 2.1 hour period

Image
  
Selected Frames

Image

2006-04-26 23:39h UT  (Top) to 
2006-04-27 01:45h UT  (Bottom)
(#117056, #117091, #117127, #117165)

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Comet 73/P Schwassmann-Wachmann 3-C (Fragment C) 

Comet 73/P Schwassmann-Wachmann 3-C
(Fragment Cpassing through star field in Corona Borealis)
This is a stacked image which is aligned on the comet,
stars appear to trail due to movement of the comet over a 4 minute period
Image
CCD Image
4 x 60 sec exposure (average combine, aligned on comet)
2x2 binning, C Filter,   Log brightness scaling
2006-04-26 23:47h UT (#117061-64)

Image
False Colour CCD Image (Fragment C)
Image details as above (#117061-64)

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HD 189733 - Star

HD 189733 (Vulpecula)
This star has an extra-solar planet (HD 189733b), whose transit should just be 
detectable as a slight dimming of the sol star. This will be a future observing challenge.
Image
Approximate Colour CCD Image
Luminance : 3 x 30s  (median combine, C Filter), 
Red : 3 x 30s (medium combine, R filter),
Green : 3 x 30s (medium combine, V filter),
Blue : 3 x 60s (medium combine, B filter)
2006-04-27 02:46h UT (#117200-11)

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This Web Page: CCD Images - Session 117 (2006-04-26)
Last Updated : 2015-05-16
Site Owner : David Richards
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