David's Astronomy Pages
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 Images (S219) |
 Images Sessions |
Home Page |
 Images (S221) |
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Objects Session Notes
BL Lac - Active Extragalactic Object (Blazer) Astrometric & Photometric Monitoring
- SS Cyg (Dwarf Nova)
- BL Lac (Blazar)
- U Her (Mira variable)
- short (1.2 hr) session due to rapidly developing cloud CCD operation of -20 degC (at 88% average cooling). - main objective of the session was to acquire ongoing monitoring and images of the moon and two nearby stars
| BL Lac (Lacerta) Magnitude Variation during August - Mid October 2007 Dataset comprising observations from 19 nights between 2007-08-08 and 2007-10-19 Note : peak on 2007-10-08 |
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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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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 220 (2007-10-08) |
| Last Updated : | 2015-05-16 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
