David's Astronomy Pages
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 Images (S290) |
 Images Sessions |
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 Images (S292) |
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Objects Session Notes
V2491 Cyg - nova C/2008 J1 (Boattini) - Comet WZ Sge - variable star Astrometric & Photometric Monitoring - SS Cyg (dwarf nova)
- SS Her, U Her (mira variable)
- BL Lac (blazar)
- Z And, R CrB, U Sge (variables)
- V2491 Cyg (nova)
- Barnard's Star, Ross 248, Groombridge 34, 61 Cyg (Nearby Stars)
- Late evening/night session (2.4hr) - operated under automated control (problem encountered with remote control /remote monitoring) - Shortest night of the year / surprisingly cold - CCD operation of -20 degC
(at 66% average cooling).- main objective was to acquire images of certain selected stars for ongoing photometric and astrometric analysis
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V2491 Cyg (Cygnus) |
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| CCD Images showing
decline in V2491 Cyg since initial image Nova is marked by white indicators |
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V2491 Cyg |
V2491 Cyg Earlier Image (2008-04-14.98 UT) 4.25 days after nova discovery. Estimated magnitude +8.5 (C) |
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3 x 120s exposure (average combine), 2x2 binning, C Filter 2008-06-20 23:47hUT (#291042-44) |
3 x 20s exposure (average combine), 2x2 binning, C Filter 2008-04-14 23:48hUT (#281164-66) |
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| Photometric data for the nova have been compiled into a Light Curve. | ||
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| C/2008 J1 (Boattini) passing through starfield in Cepheus |
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| Annotated CCD Image 60s, 2x2 binning, C Filter 2008-06-21 00:02hUT (#291052) |
| C/2008 J1 (Boattini) - motion over 5 minute period |
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| Annotated CCD Images (250% size,
cropped) 60s, 2x2 binning, C Filter Top: 2008-06-21 00:02hUT (#291052) Bot: 2008-06-21 00:07hUT (#291056) |
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| WZ Sge (Sagitta) WZ Sge has been described as the King of Cataclysmics. Although outbursts are rare they are understood to be spectacular when they do occur, with rapid nova-like brightening and interestingly superhumps, eclipses and a long decay profile [ VSNet WZ Sge Page ] GCVS Catalog details :UGSU+E+ZZ (+7.0 to +15.53) Outbursts in 1978, 2001 |
| Star field surrounding WZ Sge (Sagitta) |
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CCD Image 3 x 30 sec exposure (average combine), 2x2 binning, C Filter 2008-06-21 01:13h UT (#291126-30) |
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WZ Sge - detail WZ Sge est.mag +15.0 |
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Annotated CCD Image (200% size, cropped) Image details as above [for comparison see outburst image of WZ Sge by G. Masi ] |
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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 291 (2008-06-20) |
| Last Updated : | 2015-05-16 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
