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Objects Session Notes
NGC 6517 - Globular Cluster Astrometric & Photometric Monitoring - SS Cyg (dwarf nova)
- W And, U Her (mira variables)
- RX And, Z And, R CrB, SS Her, RU Peg (variables)
- 61 Cyg (Nearby Stars)
- U And, U Sge attempts (failed due to cloud)
- Late evening session (1.9 hrs) clouding up towards end of session. - Ambient Temperature 6 degC - CCD operation of -20 degC
(at 70% average cooling).- main objective was to acquire images of key selected stars for ongoing photometric and astrometric analysis. - opportunity take to acquire images of a previously unobserved globular open cluster from the Herschell 400 Catalog -
NGC 6517 / Herschell 199-2 (Ophiuchus) |
CCD Image 3 x 60 sec exposure (average combine), 2x2 binning, C Filter 2008-09-03 21:30 UT (#299026-28) |
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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 299 (2008-09-03) |
Last Updated : | 2015-05-16 |
Site Owner : | David Richards |
Home Page : | David's Astronomy Web Site |