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CCD Images - Session 233 (2007-11-05)

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Images (S234)
 
Objects Session Notes
Bullet Comet 17P/Holmes
Bullet Moon
Bullet Astrometric & Photometric Monitoring
- SS Cyg (dwarf nova)
- BL Lac (Blazar)
- U Her (mira variable)
- RX And, TT Ari (variables)
- Barnard's Star, Teegarden's Star (Nearby Star)
 

-
(unsuccessful attempts at - U Her due to cloud)
- Evening session (2.3hr), thin cloud / poor transparency as per previous evening. Session cut short by developing cloud.  Followed by early morning session (1.6 hr) with attempted piggy-backed digital camera imaging.
CCD operation of -20 degC (at 67% average cooling). 
- main objective of the session was to acquire follow up images of the comet 17P/Holmes 
-secondary objectives were to acquire images of certain selected stars of ongoing photometric and astrometric analysis

Comet 17P/Holmes  

Comet 17P/Holmes  (passing through starfield in Perseus)
(Mosaic collected under poor sky condition, 
causing significant light balance problems)

Image
Part of CCD Image Mosaic (3 x 3)
Linear Scale
20s exposure, 2x2 binning, C Filter, 
2007-11-05 19:45h UT (#233063-79)

 

Earlier image of Comet 17P/Holmes from 7 days previous
(at same scale)

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

Comet 17P/Holmes - Detail

Image
CCD Image (50% size)
Linear Scale
7 x 60s exposure (average combine), 1x1 binning, C Filter, 
2007-11-05 18:56h UT (#233015-21)
 
Isophote Lines (2007-11-05)
Image
False Colour CCD  Image (50% size)
Square Root brightness scaling & Isophote Contoured, 
False Colour (Inverse Spectrum)
7 x 60s exposure (average combine), 1x1 binning, C Filter, 
2007-11-05 18:56h UT (#233015-21)
Isophote Lines from earlier session (2007-10-30)
Image
False Colour CCD  Image (50% size)
Square Root brightness scaling & Isophote Contoured, 
False Colour (Inverse Spectrum)
2007-10-30 04:44h UT (#229028)
 

Comet 17P/Holmes - Rotational Gradient Processing

Normal Image
Image
CCD Image (50% size)
Linear Scale
7 x 60s exposure (average combine), 1x1 binning, C Filter, 
2007-11-05 18:56h UT (#233015-21)
 
Image 
Processed CCD Image  (50% size)
Rotational Gradient Processing, 20 deg
(Image details as above)
 
Detail
Image 
Processed CCD Image  (100% size)
Rotational Gradient Processing, 20 deg
Cropped
(Image details as above)
  

Comet 17P/Holmes - Montage of Images

Image 

CCD Image Montage (30% size)
[Larger Image,  50% size]

  

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Moon

Moon (139% Phase Angle)

Image 

 CCD Image Mosaic (35% size)
0.11s, 1x1 binning, V Filter
Unsharp Masked
2007-11-06 06:17 hUT (#233184-95)

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Astrometric and Photometric Monitoring

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This Web Page: CCD Images - Session 233  (2007-11-05)
Last Updated : 2015-05-16
Site Owner : David Richards
Home Page : David's Astronomy Web Site