David's Astronomy Pages
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 Images (S285) |
 Images Sessions |
Home Page |
 Images (S287) |
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Objects Session Notes
Star Spectra P Cyg - LBV Star Vega - A0 Star 10 Lac - O9 star Zeta Oph - O9 star 108 Vir - B9 star Yed Prior (Delta Oph) - M1 star V0973 Cyg - M3 star XY Lyr - M4 star R Lyr - M5 star U Her - M6-M9 star / Mira variable V460 Cyg - C6 star HK Lyr - C6 star NGC 7026 - Planetary Nebula ("Cheeseburger Nebula") 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, ER UMa (variables)
- V2491 Cyg (nova)
- Barnard's Star, 61 Cyg, Gliese 412, Groombridge 34, Ross 248 (HH And) (Nearby Stars)
- Late evening/night session (4.3hr) - operated & monitored under remote control - CCD operation of -20 degC
(at 76% average cooling).- 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) |
Spectra Lines ( Star Analyser 100) |
Image Date/No. & Notes |
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| 10 Lac | 09 |  |
2008-05-08 (#286167-69) | ||
| Zeta (13) Oph HIP 81377 |
09 |  |
2008-05-08 (#286142-44) | ||
| P Cyg | B1Iapeq |  |
2008-05-08 (#286177-79) | ||
| 108 Vir | B9 |  |
2008-05-07 (#286026-30) | ||
| Vega Alpha Lyr |
A0 |  |
2008-05-07 (#286046-48) | ||
| Groombridge 34 And |
M1 |  |
2008-05-08 (#286242-44) | ||
| Yed Prior Delta Oph |
M1 |  |
2008-05-08 (#286147-49) | ||
| V0973 Cyg HIP 97151 |
M3 |  |
2008-05-08 (#286212-14) | ||
| XY Lyr | M4 |  |
2008-05-08 (#286153-55) | ||
| R Lyr | M5 |  |
2008-05-08 (#286189-91) | ||
| V0460 Cyg | C6,4(N1) |  |
2008-05-08 (#286217-19) | ||
| HK Lyr | C6,4(N4) |  |
2008-05-08 (#286200-02) | ||
| U Her | M6-M9 |  |
2008-05-07 (#286083-85) | ||
| NGC 7026 | Pl.Neb |  |
2008-05-07 (#286182-84) |
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P Cyg is a hypergiant luminous blue variable (LBV) star of spectral type B2 Ia that is one of the most luminous stars in the Milky Way galaxy and is located about 5000 to 6000 light years from Earth. Luminous Blue Variable stars like P Cygni are very rare and short lived, and only form in regions of galaxies where intense star formation is happening. LBV stars are so massive and energetic (typically 50 times the mass of our sun and tens of thousands of times more luminous) that they exhaust their nuclear fuel very quickly. After shining for only a few million years (compared to several billion years for our sun) P Cyg will end its life by erupting as a supernova.
The spectra of P Cyg shows strong emission lines, particularly H alpha, associated with clouds of Hydrogen surrounding the star.
| P Cyg (Cygnus) |
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| 3 x 10s 2008-05-08 01:16hUT (#286177-79) |
| Spectral Emission Lines in P Cyg (Cygnus) |
 
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CCD Spectral Profile (200%) 3 x 10s, 1x1 binning, Original Dispersion 33.6 A/px 2008-05-08 01:16hUT (#286177-79) |
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Later Image of P Cyg (2008-05-09) |
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| CCD Image 3 x 5s exposure (average combine), 2x2 binning, C Filter 2008-05-09 01:50h UT (#287186-88) |
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| Vega (Alpha Lyr) |
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| CCD Spectral Profile 3 x 0.5s, 1x1 binning, Star Analyser 100 2008-05-07 23:01hUT (#286046-48) |
| Spectral Absorption Lines in Vega (Lyra) O2 and H2O lines are due to absorption in the Earth's atmosphere) H-epsilon and H-zeta lines are not visible due to decreasing sensitivity of CCD chip in violet region and overall low resolution. |
 
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| CCD Spectral Profile (200%) 3 x 0.5s, 1x1 binning, Original Dispersion 33.6 A/px 2008-05-07 23:01hUT (#286046-48) |
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| 10 Lac (Lacerta) |
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| Annoated CCD Image 3s, 2x2 binning, C Filter 2008-05-08 01:09hUT (#286166) |
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| CCD Spectral Profile 3 x 5s, 1x1 binning, Star Analyser 100 2008-05-08 01:10hUT (#286167-69) |
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| CCD Spectral Profile (200%) 3 x 5s, 1x1 binning, Star Analyser 100 2008-05-08 01:10hUT (#286167-69) |
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| Zeta Oph / HIP 81377 (Ophiuchus) |
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| CCD Spectral Profile 3 x 3s, 1x1 binning, Star Analyser 100 2008-05-08 00:47hUT (#286142-44) |
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| CCD Spectral Profile (200%) 3 x 3s, 1x1 binning, Star Analyser 100 2008-05-08 00:47hUT (#286142-44) |
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| 108 Vir (Virgo) |
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| CCD Spectral Profile 5 x 30s, 1x1 binning, Star Analyser 100 2008-05-07 22:36hUT (#286026-30) |
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| CCD Spectral Profile (200%) 5 x 30s, 1x1 binning, Star Analyser 100 2008-05-07 22:36hUT (#286026-30) |
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| Yed Prior / Delta Oph (Ophiuchus) |
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| CCD Spectral Profile 3 x 3s, 1x1 binning, Star Analyser 100 2008-05-08 00:50hUT (#286147-49) |
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| CCD Spectral Profile (200%) 3 x 60s, 1x1 binning, Star Analyser 100 2008-05-08 00:50hUT (#286147-49) |
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| V0973 Cyg / HIP 97151 (Cygnus) |
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| Annotated CCD Image 10s, 2x2 binning, C Filter 2008-05-08 01:44hUT (#286211) |
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| CCD Spectral Profile 3 x 60s, 1x1 binning, Star Analyser 100 2008-05-08 01:46hUT (#286212-14) |
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| CCD Spectral Profile (200%) 3 x 60s, 1x1 binning, Star Analyser 100 2008-05-08 01:46hUT (#286212-14) |
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| XY Lyr (Lyra) |
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| Annotated CCD Image 20s, 2x2 binning, C Filter 2008-05-08 00:53hUT (#286152) |
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| CCD Spectral Profile 3 x 20s, 1x1 binning, Star Analyser 100 2008-05-08 00:55hUT (#286153-55) |
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| CCD Spectral Profile (200%) 3 x 20s, 1x1 binning, Star Analyser 100 2008-05-08 00:55hUT (#286153-55) |
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| R Lyr (Lyra) |
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| CCD Spectral Profile 3 x 5s, 1x1 binning, Star Analyser 100 2008-05-08 01:26hUT (#286189-91) |
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| CCD Spectral Profile (200%) 3 x 5s, 1x1 binning, Star Analyser 100 2008-05-08 01:26hUT (#286189-91) |
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| U Her (Hercules) |
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| CCD Spectral Profile 3 x 60s, 1x1 binning, Star Analyser 100 2008-05-07 23:41hUT (#286083-85) |
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| CCD Spectral Profile (200%) 3 x 60s, 1x1 binning, Star Analyser 100 2008-05-07 23:41hUT (#286083-85) |
| Impact of improved focusing : |
| S286 (2008-05-07) better focused |
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| S283 (2008-04-17) poorer focused |
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| V460 Cyg (Cygnus) |
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| Annotated CCD Image 10s, 2x2 binning, C Filter 2008-05-08 01:50hUT (#286216) |
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| CCD Spectral Profile 3 x 60s, 1x1 binning, Star Analyser 100 2008-05-08 01:52hUT (#286217-19) |
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| CCD Spectral Profile (200%) 3 x 60s, 1x1 binning, Star Analyser 100 2008-05-08 01:52hUT (#286217-19) |
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| HK Lyr (Lyra) |
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| Annotated CCD Image 15s, 2x2 binning, C Filter 2008-05-08 01:34hUT (#286199) |
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| CCD Spectral Profile 3 x 45s, 1x1 binning, Star Analyser 100 2008-05-08 01:37hUT (#286200-02) |
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| CCD Spectral Profile (200%) 3 x 45s, 1x1 binning, Star Analyser 100 2008-05-08 01:37hUT (#286200-02) |
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| NGC 7026 (Cygnus) |
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| Annotated CCD Image (200% size,cropped) 10s, 2x2 binning, C Filter 2008-05-08 01:34hUT (#286181) |
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| CCD Spectra 3 x 45s, 1x1 binning, Star Analyser 100 2008-05-08 01:22hUT (#286182-84) |
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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 286 (2008-05-07) |
| Last Updated : | 2008-06-08 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
