David's Astronomy Pages
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 Images (S257) |
 Images Sessions |
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 Images (S259) |
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Objects Session Notes
RX And - Z Camelopardalis-type dwarf nova 17P/Holmes - Comet Astrometric & Photometric Monitoring
- SS Cyg, U Gem (dwarf nova)
- S Cyg, U And, W And (mira variables)
- BL Lac (Blazar)
- TT Ari, RX And, Z And, U Mon, DY Per, RR Tau (variables)
- HH And, 61 Cyg (Nearby stars)
- Evening session (4.0hr), generally poor transparency with conditions deteriorating and cloud developing towards end. Relatively mild, 10 degC warmer than session 256. - CCD operation of -20 degC (at 80% average cooling). - main objective was to acquire images of certain selected stars for ongoing photometric and astrometric analysis, in particular SS Cyg and RX And.
| RX And (Andromeda) Distinct fading of RX And noted in photometric measurements on 2008-01-20 to 2008-01-25 |
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Comet 17P/Holmes - passing
through starfield in Perseus |
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| CCD Image
3 x 120s exposure (av. combine), 2x2 binning, C Filter 2008-01-25 18:55h UT (#258042-44) |
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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 258 (2008-01-25) |
| Last Updated : | 2015-05-16 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
