David's Astronomy Pages
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 Images (S217) |
 Images Sessions |
Home Page |
 Images (S219) |
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Objects Session Notes
BL Lac - Active Extragalactic Object (Blazer) Cygnus - Constellation Astrometric & Photometric Monitoring
- SS Cyg (Dwarf Nova)
- BL Lac (Blazar)
- SZ Her, CY Lyr, TZ Lyr (Variable)
- short session (1.5 hour duration) - sky conditions rapidly deteriorating towards end with cloud - CCD operation of -20 degC (at 85% average cooling). - main objectives were to acquire images of selected variable stars and nearby stars for ongoing photometry and astrometry -
| BL Lac (Lacerta) Magnitude Variation during August - Early October 2007 Dataset comprising observations from 16 nights between 2007-08-08 and 2007-10-05 |
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Earlier image of BL Lac |
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CCD Image 120 sec exposure, 2x2 binning, R Filter 2006-12-02 18:06h UT (#157058) |
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Cygnus - Constellation |
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Digital Photo (EOS 400D) , 25% size 4 min exposure, f/4.0, ISO 800, 27mm 2007-10-02 19:58 hUT |
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Cygnus - Milky Way detail |
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Digital Photo (EOS 400D), 50% size 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 218 (2007-10-02) |
| Last Updated : | 2015-05-16 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
