David's Astronomy Pages
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 Images (S299) |
 Images Sessions |
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 Images (S301) |
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Objects Session Notes
CY Lyr - dwarf nova Astrometric & Photometric Monitoring - SS Cyg (dwarf nova)
- U And (mira variables)
- BL Lac (blazar)
- RX And, RU Peg, DY Per, U Sge, V Sge, FG Sge, CY Lyr (variables)
- Gliese 1245, Teegardens Star attempts (failed due to cloud)
- R CrB, WZ Sge attempts (failed due to cloud)
- 300th imaging session - Late evening session (2.9 hrs), poor sky transparency, fairly windy with passing cloud, with more cloud developing towards end of session. Session operated under automated control - Ambient Temperature 12 degC - CCD operation of -15 degC
(at 76% average cooling).- main objective was to acquire images of key selected stars for ongoing photometric and astrometric analysis. - due to poor conditions no attempt was made to observe any new objects or take any gallery images. -
| CY Lyr (Lyra) Images from this session (2008-09-05/06) and two later sessions (2008-09-20 & 2008-09-22) show a marked variation in CY Lyr from mag +13.2 (V) on 2008-09-06 to +16.0 (V) on 2008-09-20, a 2.8 mag dimming (See Graph of CY Lyr on AAVSO - last 100 days ) |
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| Star (Andromeda) |
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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 300 (2008-09-05) |
| Last Updated : | 2015-05-16 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
