David's Astronomy Pages
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 Images (S220) |
 Images Sessions |
Home Page |
 Images (S222) |
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Objects Session Notes
SU UMa - Cataclysmic Variable Saturn Astrometric & Photometric Monitoring
- SS Cyg, U Gem (Dwarf Nova)
- BL Lac (Blazar)
- U And, W And (Mira variables)
- ER UMa, SU UMa, Z And (variables)
- Gliese 412, Groombridge 1618, Groombridge 1830 (Nearby Stars)
- morning session (2.8 hr) just before dawn. Fairly cold, ground frost. CCD operation of -20 degC (at 60% average cooling). - main objective of the session was to acquire a further image of the current comet C/2007 (LONEOS), however the dawn light became too bright comet by the time the comet rose above my observatory wall. - opportunity was also taken to acquire images of selected stars for ongoing astrometric and photometric monitoring
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Animation sequence of images showing
variation in SU UMa |
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Animated CCD Images 180 sec exposure, 2x2 binning, V Filter 2007-04-28 (#192248), 2007-08-08 (#203184), 2007-08-22 (#206056) 2007-08-25 (#207032), 2007-10-17 (#221109) |
| SU UMa (Ursa Major) Magnitude Variation during Mar - Oct 2007 Dataset comprising observations from 9 nights between 2007-03-13 and 2007-10-17 Note : The dataset shows a 4.5 mag variation between a peak (+11.8) and minimum (+16.3) This compares with a 4.2 mag variation listed in the GCVS catalog variation of (+10.8 to 14.96) |
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Saturn |
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| Annotated CCD Image 0.2s exposure, 1x1 binning, C Filter 2007-10-17 05:52 hUT (#221136) |
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Saturn Moons |
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| Annotated CCD Image 3s exposure, 1x1 binning, C Filter 2007-10-17 05:56 hUT (#221143) |
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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 221 (2007-10-17) |
| Last Updated : | 2015-05-16 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
