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CCD Images - Session 286 (2008-05-07)

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Objects Session Notes
Bullet Star Spectra
Bullet P Cyg - LBV Star
Bullet Vega - A0 Star
Bullet 10 Lac - O9 star
Bullet Zeta Oph - O9 star
Bullet 108 Vir - B9 star
Bullet Yed Prior (Delta Oph) - M1 star
Bullet V0973 Cyg - M3 star
Bullet XY Lyr - M4 star
Bullet R Lyr - M5 star
Bullet U Her - M6-M9 star / Mira variable
Bullet V460 Cyg - C6 star
Bullet HK Lyr - C6 star
Bullet NGC 7026 - Planetary Nebula ("Cheeseburger Nebula")
Bullet 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

Star Spectra

Star Name
(designation)
Spectra Type
(catalog)

Spectra Lines  ( Star Analyser 100)
 

Image Date/No. & Notes
 
10 Lac 09 Image 2008-05-08  (#286167-69)
Zeta (13) Oph
HIP 81377
09 Image 2008-05-08  (#286142-44)
P Cyg B1Iapeq Image 2008-05-08 (#286177-79)
108 Vir B9 Image 2008-05-07 (#286026-30)
Vega
Alpha Lyr
A0 Image 2008-05-07 (#286046-48)
Groombridge 34 
And
 M1 Image  2008-05-08 (#286242-44)
Yed Prior
Delta Oph
 M1 Image  2008-05-08 (#286147-49)
V0973 Cyg
HIP 97151
 M3 Image  2008-05-08 (#286212-14)
 XY Lyr   M4 Image  2008-05-08  (#286153-55)
 R Lyr   M5 Image  2008-05-08  (#286189-91)
 V0460 Cyg C6,4(N1)  Image  2008-05-08 (#286217-19)
HK Lyr C6,4(N4) Image 2008-05-08  (#286200-02)
 U Her   M6-M9 Image  2008-05-07  (#286083-85)
     
 NGC 7026 Pl.Neb Image  2008-05-07  (#286182-84)

 

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P Cyg - LBV Star 

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)
Image
Image
Image
3 x 10s
2008-05-08 01:16hUT 
(#286177-79)
Spectral Emission Lines in P Cyg (Cygnus)
Image
Image
CCD Spectral Profile (200%)
3 x 10s, 1x1 binning,  Original Dispersion 33.6 A/px
2008-05-08 01:16hUT (#286177-79)
    

Later Image of P Cyg (2008-05-09) 

Image
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 - A0 Star 

Vega (Alpha Lyr)
Image
Image
Image
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.
Image
Image
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 - O9 star

10 Lac (Lacerta)
Image
Annoated CCD Image
3s, 2x2 binning, C Filter
2008-05-08 01:09hUT (#286166)
  
Image
Image
Image
CCD Spectral Profile
3 x 5s, 1x1 binning, Star Analyser 100
2008-05-08 01:10hUT (#286167-69)
 
Image
Image
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 - O9 star

Zeta Oph / HIP 81377 (Ophiuchus)
Image
Image
Image
CCD Spectral Profile
3 x 3s, 1x1 binning, Star Analyser 100
2008-05-08 00:47hUT (#286142-44)
 
Image
Image
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 - B9 star

108 Vir (Virgo)
Image
Image
Image
CCD Spectral Profile
5 x 30s, 1x1 binning, Star Analyser 100
2008-05-07 22:36hUT (#286026-30)
 
Image
Image
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) - M1 star

Yed Prior / Delta Oph (Ophiuchus)
Image
Image
Image
CCD Spectral Profile
3 x 3s, 1x1 binning, Star Analyser 100
2008-05-08 00:50hUT (#286147-49)
 
Image
Image
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 - M3 star

V0973 Cyg / HIP 97151 (Cygnus)
Image
Annotated CCD Image
10s, 2x2 binning, C Filter
2008-05-08 01:44hUT (#286211)
  
Image
Image
Image
CCD Spectral Profile
3 x 60s, 1x1 binning, Star Analyser 100
2008-05-08 01:46hUT (#286212-14)
 
Image
Image
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 - M4 star

XY Lyr (Lyra)
Image
Annotated CCD Image
20s, 2x2 binning, C Filter
2008-05-08 00:53hUT (#286152)
  
Image
Image
Image
CCD Spectral Profile
3 x 20s, 1x1 binning, Star Analyser 100
2008-05-08 00:55hUT (#286153-55)
  
Image
Image
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 - M5 star

R Lyr (Lyra)
Image
Image
Image
CCD Spectral Profile
3 x 5s, 1x1 binning, Star Analyser 100
2008-05-08 01:26hUT (#286189-91)
  
Image
Image
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 - M6-M9 star / Mira variable

U Her (Hercules)
Image
Image
Image
CCD Spectral Profile
3 x 60s, 1x1 binning, Star Analyser 100
2008-05-07 23:41hUT (#286083-85)
 
Image
Image
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
Image
Image
 
 S283 (2008-04-17)
poorer focused
Image
Image

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V460 Cyg - C6 star

V460 Cyg (Cygnus)
Image
Annotated CCD Image
10s, 2x2 binning, C Filter
2008-05-08 01:50hUT (#286216)
  
Image
Image
Image
CCD Spectral Profile
3 x 60s, 1x1 binning, Star Analyser 100
2008-05-08 01:52hUT (#286217-19)
  
Image
Image
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 - C6 star

HK Lyr (Lyra)
Image
Annotated CCD Image
15s, 2x2 binning, C Filter
2008-05-08 01:34hUT (#286199)
  
Image
Image
Image
CCD Spectral Profile
3 x 45s, 1x1 binning, Star Analyser 100
2008-05-08 01:37hUT (#286200-02)
  
Image
Image
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 - Planetary Nebula ("Cheeseburger Nebula")

NGC 7026 (Cygnus)
Image
Annotated CCD Image 
(200% size,cropped)
10s, 2x2 binning, C Filter
2008-05-08 01:34hUT (#286181)
  
Image
CCD Spectra
3 x 45s, 1x1 binning, Star Analyser 100
2008-05-08 01:22hUT (#286182-84)
  

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Astrometric and Photometric Monitoring

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This Web Page: CCD Images - Session 286  (2008-05-07)
Last Updated : 2015-05-16
Site Owner : David Richards
Home Page : David's Astronomy Web Site