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Objects Session Notes
Star Spectra Deneb - Star (A2 spectral type) R CrB - RCB variable star V2491 Cyg - nova NGC 4490 - Spiral Galaxy with Supernovae 2008ax Astrometric & Photometric Monitoring - SS Cyg, U Gem (dwarf nova)
- SS Her, U Her (mira variable)
- BL Lac (blazar)
- KR Aur, SY Cnc, AM CVn, AM Her, SZ Her, RZ LMi, DY Per, ER UMa (variables)
- V2491 Cyg (nova)
- Barnard's Star, Gliese 412, Groombridge 34, Groombridge 1618, Groombridge 1830, Lalande 21185 (Nearby Stars)
- Late evening session (4.1hr) - poor sky transparency, several images 'lost' due to sky conditions - CCD operation of -15 degC
(at 58% average cooling).- main objective was to acquire images of certain selected stars for ongoing photometric and astrometric analysis
Goto Notes from 2008-05-02
Star Name (designation) |
Spectra Type (catalog) |
Star Spectra (Star Analyser 100) |
Image details (1x1 binning) |
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Spica Alpha Vir |
B1 | 5 x 1s (2x2) 2008-05-02 22:51hUT (#285031-35) |
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Vega Alpha Lyr |
A0 | 7 x 0.5s 2008-04-25 00:08hUT (#284127-31) |
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Deneb Alpha Cyg |
A2 | 5 x 5s 2008-05-03 01:24hUT (#285161-65) |
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Izar Epsilon Boo |
A0 ?? |
5 x 3s 2008-05-02 23:03hUT (285050-54) |
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Sadr Gamma Cyg |
F8 | 5 x 5s 2008-05-03 01:18hUT (#285149-53) |
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Star Name (designation) |
Spectra Type (catalog) |
Spectra Lines ( Star Analyser 100) |
Image Date/No. & Notes |
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Spica Alpha Vir |
B1 | 2008-05-02 (#285031-35) | |||
Vega Alpha Lyr |
A0 | 2008-04-25 (#284127-31) | |||
Deneb Alpha Cyg |
A2 | 2008-05-03 (#285161-65) | |||
Izar Epsilon Boo |
A0 ?? |
2008-05-02 (285050-54) | |||
Sadr Gamma Cyg |
F8 | 2008-05-03 (#285149-53) |
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Deneb (Cygnus) | ||
5 x 5s 2008-05-03 01:24hUT (#285161-65) |
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Image |
Spectra Lines ( Star Analyser 100) |
Image Date/No | ||
Average | 2008-05-03 (#285161-65) | |||
1 | 2008-05-03 (#285161) | |||
2 | 2008-05-03 (#285162) | |||
3 | 2008-05-03 (#285163) | |||
4 | 2008-05-03 (#285164) | |||
5 | 2008-05-03 (#285165) | |||
Intensity Profiles |
(#285161-65) |
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R CrB (Corona Borealis) |
Annotated CCD Image 3 x 30s exposure (average combine), 2x2 binning, C Filter 2008-05-02 23:32 hUT (#285071-73) |
Earlier image of R CrB |
Annotated CCD Image 3 x 30s exposure (average combine), 2x2 binning, C Filter 2006-06-15 01:21 hUT (#128092-94) |
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V2491 Cyg (Cygnus) |
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Annotated CCD Image 3 x 120s exposure (average combine), 2x2 binning, C Filter 2008-05-03 00:56hUT (#285129-31) |
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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 2008-05-03 00:56hUT (#285129-31) |
3 x 20s exposure (average combine), 2x2 binning, C Filter 2008-04-14 23:48hUT (#281164-66) |
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NGC 4490 with SN 2008ax (Canes
Venatici)
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Image of NGC 4490 & SN 2008ax (2008-05-02) |
Annotated CCD Image 3 x 180s exposure (average combine), 2x2 binning, C Filter 2008-05-02UT (#285077-79) |
Earlier Image of NGC 4490 & SN 2008ax
(2008-04-24) Image below (2008-04-24.99) was taken 52.5 days after discovery. SN 2008ax - Estimated Magnitude +13.6 (C) |
Annotated CCD Image 3 x 180s exposure (average combine), 2x2 binning, C Filter 2008-04-24 23:39UT (#284096-98) |
Earlier Image of NGC 4490 & SN
2008ax (2008-04-02) |
Annotated CCD Image 7 x 120s exposure (average combine), 2x2 binning, C Filter 2008-04-02 21:04UT (#279042-48) |
Earlier Image of NGC 4490 & SN 2008ax
(2008-03-08) |
Annotated CCD Image 7 x 120s exposure (average combine), 2x2 binning, C Filter 2008-03-08 00:48 hUT (#273136-42) |
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Earlier Image of NGC 4490 (2006, Pre-SN) |
CCD Image 5 x 180s exposure (average combine), 2x2 binning, C Filter 2006-12-20 06:30h UT (#167511-15) |
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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 285 (2008-05-02) |
Last Updated : | 2024-02-11 |
Site Owner : | David Richards |
Home Page : | David's Astronomy Web Site |