David's Astronomy Pages
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 Images (S283) |
 Images Sessions |
Home Page |
 Images (S285) |
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Objects Session Notes
Star Spectra U Cyg - variable star / spectra 3C 273 - Quasar 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)
- All night session (5.7hr) - night hours now shorterning as summer approaches - CCD operation of -20 degC
(at 64% average cooling).- main objective to try out updated software routines for automated capture of correctly focussed star spectra - produced using recently purchased Star Analyser 100. - other main objective was to acquire images of certain selected stars for ongoing photometric and astrometric analysis
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Star Name (designation) |
Spectra Type (catalog) |
Star Spectra (Star Analyser 100) |
Image details (1x1 binning) |
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| SAO 69402 WR 133, Cyg HD 190918 |
WR - WN5 Wolf Rayet |
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3 x 60s 2008-04-25 03:11hUT (#284317-19) |
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| 4 Her | B9 |  |
3 x 20s 2008-04-25 00:03hUT (#284120-22) |
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| 108 Vir | B9 |  |
5 x 30s 2008-04-25 02:58hUT (#284301-05) |
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| Vega Alpha Lyr |
A0 |  |
7 x 0.5s 2008-04-25 00:08hUT (#284127-31) |
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| Vega Alpha Lyr |
A0 |  |
7 x 0.5s (Previous Session) 2008-04-18 01:56hUT (#283304-10) |
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| Groombridge 1830 HIP 57939, UMa |
G8 |  |
3 x 20s 2008-04-25 00:43hUT (#284161-63) |
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| Arcturus Alpha Boo |
K2 |  |
3 x 0.5s 2008-04-24 21:35hUT (#284006-9) |
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| Lalande 21185 HIP 54035, UMa |
M2 |  |
3 x 30s 2008-04-25 01:01hUT (#284178-80) |
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| R Boo | M3-M8 |  |
3 x 60s 2008-04-25 03:04hUT (#284310-12) |
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| R Vir | M3-M8 |  |
3 x 60s 2008-04-24 23:27hUT (#284089-91) |
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| RR CrB | M5 |  |
5 x 60s 2008-04-24 22:24hUT (#284052-56) |
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| Y CVn | C5 |  |
5 x 10s 2008-04-24 23:50hUT (#284106-10) |
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| Cyg U | C7-C9 |  |
3 x 60s 2008-04-25 02:47hUT (#284286-88) |
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| R Aur | M6-M9 |  |
5 x 60s 2008-04-24 22:05hUT (#284033-35) |
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| R Leo | M6-M9 |  |
3 x 60s 2008-04-24 22:13hUT (#284043-45) |
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| U Her | M6-M9 |  |
3 x 60s (previous session) 2008-04-17 23:24hUT (#283143-45) |
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Star Name (designation) |
Spectra Type (catalog) |
Spectra Lines ( Star Analyser 100) |
Image Date/No. & Notes |
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| SAO 69402 WR 133, Cyg HD 190918 |
WR - WN5 Wolf Rayet |
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2008-04-25 (#284317-19) |
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| 4 Her | B9 |  |
2008-04-25 (#284120-22) | ||
| 108 Vir | B9 |  |
2008-04-25 (#284301-05) | ||
| Vega Alpha Lyr |
A0 |  |
2008-04-25 (#284127-31) | ||
| Vega Alpha Lyr |
A0 |  |
Previous Session 2008-04-18 (#283304-10) |
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| Groombridge 1830 HIP 57939, UMa |
G8 |  |
2008-04-25 (#284161-63) | ||
| Arcturus Alpha Boo |
K2 |  |
2008-04-24 (#284006-9) | ||
| Lalande 21185 HIP 54035, UMa |
M2 |  |
2008-04-25 (#284178-80) | ||
| R Boo | M3-M8 |  |
2008-04-25 (#284310-12) | ||
| R Vir | M3-M8 |  |
2008-04-24 (#284089-91) | ||
| RR CrB | M5 |  |
2008-04-24 (#284052-56) | ||
| Y CVn | C5 |  |
2008-04-24 (#284106-10) | ||
| Cyg U | C7-C9 |  |
2008-04-25 (#284286-88) | ||
| R Aur | M6-M9 |  |
2008-04-24 (#284033-35) | ||
| R Leo | M6-M9 |  |
2008-04-24 (#284043-45) | ||
| U Her | M6-M9 |  |
2008-04-17 (#283143-45) |
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U Cyg (Cyg) |
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| Annotated CCD Image 3s exposure, 2x2 binning, C filter 2008-04-25 02:44hUT (#284285) |
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U Cyg spectral image |
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| Annotated Spectrographic CCD Image (50%
size) 3 x 60s exposure (average combine), 1x1 binning Star Analyser 100 2008-04-25 02:47hUT (#284286-88) |
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U Cyg spectral image - detail |
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| Spectrographic CCD Image (cropped) 3 x 60s exposure (average combine), 1x1 binning Star Analyser 100 2008-04-25 02:47hUT (#284286-88) |
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| Spectrographic CCD Image (rotated &
cropped) Image details as above |
| U Cyg - spectral lines |
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| Image details as above |
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3C 273 spectra (Virgo) |
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| Spectrographic CCD Image 5 x 120s exposure (average combine), 2x2binning, Star Analyser 100 Filter Cell 2008-04-24 23:17hUT (#284080-84) |
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| 3C 273 - spectral lines (very low S/N) |
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| Image details as above |
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Earlier Image of 3C 273 |
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| Annotated CCD Image 3 x 120s exposure (average combine), 2x2 binning, C Filter 2008-04-16 21:57hUT (#282084-86) |
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NGC 4490 with SN 2008ax (Canes
Venatici) Image below
(2008-04-24.99) was taken 52.5 days after discovery. |
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| Annotated CCD Image 3 x 180s exposure (average combine), 2x2 binning, C Filter 2008-04-24 23:39UT (#284096-98) |
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Earlier Image of NGC 4490 & SN 2008ax |
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| Annotated CCD Image 7 x 120s exposure (average combine), 2x2 binning, C Filter 2008-04-02 21:04UT (#279042-48) |
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Earlier Image of NGC 4490 & SN 2008ax |
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| 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 (Pre-SN) |
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| 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 284 (2008-04-24) |
| Last Updated : | 2023-10-16 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
