David's Astronomy Pages
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 Images (S200) |
 Images Sessions |
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Objects Session Notes
Barnard's Star Astrometric & Photometric Monitoring
- SS Cyg (Dwarf Nova)
- U Her (Mira variable)
- BL Lac (Blazar)
- 61 Cyg, Gliese 1245, Groombridge 34, HH And (Nearby Stars)
Attemps also at Z And, U And, W And
- Session duration 2.0 hr - CCD operation of -15 degC (at 54% average cooling). . - main objective was to acquire images Venus at 38% phase, but unfortunately the planet had descended below the edge of the observatory and imaging was consequently not possible - secondary objective was to acquire images of selected variable stars and nearby stars for ongoing photometric and astrometric monitoring. - opportunity was taken to update PEC training on LX200 telescope. A future session will establish whether an improvement in PEC has been made or not. - More Notes -
| Barnard's Star, HIP 87937
(Ophiuchus) 2nd closest known star system to the Sun only 5.94 light years away Star with largest known proper motion |
| Animation of Images taken one year
apart, showing 10 arc sec/year motion of Barnard's Star |
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Animated CCD Image a) 2007-06-26 23:07h UT (#201012-18), 7 x 10s (average combine), C Filter b) 2006-06-25 23:49h UT (#129162-68), 7 x 10s (average combine), C Filter |
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Motion of Barnard's Star ( 2005-09-30 to 2007-06-26 ) Measured Proper Motion 10.57 arc sec/year, PA 356.28 deg (based on 3 observation pairs separated by one year) [ cf. Hipparcos Value 10.358"/yr, 355.6 ] |
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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 201 (2007-06-26) |
| Last Updated : | 2015-05-16 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
