David's Astronomy Pages
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 Images (S292) |
 Images Sessions |
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 Images (S294) |
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Objects Session Notes
V2491 Cyg - nova Astrometric & Photometric Monitoring - SS Cyg (dwarf nova)
- V2491 Cyg (nova)
- U And, W And, SS Her (mira variable)
- BL Lac (blazar)
- RX And, AM Her, Z And, RU Peg, R CrB, U Sge, V Sge, WZ Sge (variables)
- Barnards Star, Ross 248 (Nearby Stars)
- Late evening/night session (2.8hr) - operated under automated control - CCD operation of -15 degC
(at 74% average cooling).- main objective was to acquire images of certain selected stars for ongoing photometric and astrometric analysis in particular U And, W And
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V2491 Cyg (Cygnus) |
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| Latest image of V2491 Cyg compared with early post-discovery image | ||
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83.3 days (mag +14.8) |
4.25 days (mag +8.5) |
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3 x 120s exposure (average combine), 2x2 binning, C Filter 2008-07-02 23:54hUT (#293040-42) |
3x20s exposure (average combine), 2x2 binning, C Filter 2008-04-14 23:48hUT (#281164-66) |
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| V2491 Cyg - Light Curves showing decline from discovery (+7.7) down to final measurement (+14.8) |
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V2491 Cyg - Reference Stars |
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| Annotated CCD Image 15s exposure, 2x2 binning, V Filter 2008-04-14 23:51hUT (#281171) |
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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 293 (2008-07-02) |
| Last Updated : | 2015-05-16 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
