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Objects Session Notes
M57 - Planetary Nebula ("Ring Nebula") Astrometric & Photometric Monitoring - SS Cyg (dwarf nova)
- SS Her, U Her (mira variables)
- R CrB, RU Peg, GK Per (variables)
- U Sge attempt (failed due to cloud)
- Short evening session (1.6 hrs), cut short by developing cloud - Ambient Temperature 6.5 degC (minimum) j - CCD operation of -20 degC
(at 76% average cooling).- main objective of the session was to acquire images of key selected stars for ongoing photometric and astrometric analysis. - opportunity taken to take a set of images of M57
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M57 (Lyra) |
CCD Image (60% size) 3 x 60s exposure (average combine), 1x1 binning, C Filter 2008-10-13 19:14 hUT (#315009-11) [ Full size image ] |
M57 - detail |
CCD Image (150% size, 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 315 (2008-10-13) |
Last Updated : | 2015-05-16 |
Site Owner : | David Richards |
Home Page : | David's Astronomy Web Site |