David's Astronomy Pages
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 Images (S246) |
 Images Sessions |
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 Images (S248) |
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Objects Session Notes
NGC 520 - Peculiar Galaxy (ARP 157) Astrometric & Photometric Monitoring
- SS Cyg (dwarf nova)
- BL Lac (Blazar)
- RU Peg, DY Per (variables)
- Evening session (1.6hr). Poor transparency, Cloud developing - Problem performing automated short mapping job using new TPoint Model. Manually controlled mapping was required instead. - CCD operation of -20 degC (at 58% average cooling). - -main objectives were to acquire images of certain selected stars of ongoing photometric and astrometric analysis -opportunity was also taken to acquire gallery images of certain deep sky objects.
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NGC 520 / ARP 157 (Pisces) |
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CCD Image |
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NGC 520 / ARP 157 - detail |
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CCD Image |
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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 247 (2007-12-25) |
| Last Updated : | 2015-05-16 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
