David's Astronomy Pages
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 Images (S230) |
 Images Sessions |
Home Page |
 Images (S232) |
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Objects Session Notes
Comet 17P/Holmes Astrometric & Photometric Monitoring
- SS Cyg (dwarf nova)
- BL Lac (Blazar)
- U And, W And (mira)
- Z And, TT Ari, RX And (variables)
- TZ Lyr, CY Lyr (variables)
- Barnard's Star, Gliese 725 (Nearby Stars)
- (unsuccessful attempts at U Her due to cloud)
- Evening session (5.7hr), thin cloud / poor transparency throughout CCD operation of -25 degC (at 70% average cooling). - main objective of the session was to acquire images of SS Cyg (dwarf nova) in case it had recently erupted (eruption is anticipated and my last observations were on Oct 25th) -other objectives were to acquire images of certain selected stars of ongoing photometric and astrometric analysis and attempt a follow-up observation on SN 2007le (NGC 7721) - secondary objective was to acquire images of 17P/Holmes and selected stars for ongoing astrometric and photometric analysis
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Comet 17P/Holmes (passing through starfield in
Perseus) |
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| CCD Image Mosaic (3 x 4) Linear Scale, 50% size 30s exposure, 2x2 binning, C Filter, 2007-11-03 21:40h UT (#231263-74) |
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Comet 17P/Holmes - Detail |
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| Approximate Colour CCD Image (CBVR) Linear Scale, 2x2 binning Luminance : 30s (C), Red: 30s (R), Green: 30s (V), Blue: 60s (B) 2007-11-03 22:26h UT (#231311-22) |
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| CCD Image Linear Scale 7 x 60s exposure (average combine), 1x1 binning, C Filter, 2007-11-03 18:08h UT (#231055-61) |
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| False Colour CCD Image Square Root brightness scaling, Isophot Contoured, False Colour (Inverse Spectrum) (Image details as above) |
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Comet 17P/Holmes - Rotational Gradient Processing |
| Processed CCD Image Rotational Gradient Processing, 20 deg Cropped (Image details as above) |
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Images collected for Astrometric Monitoring
of Nearby Stars Project
Images collected for Photometric Monitoring
of Variable Stars
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| This Web Page: | CCD Images - Session 231 (2007-11-03) |
| Last Updated : | 2008-01-01 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
