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Objects Session Notes 
SZ Her - Eclipsing Binary M27 - Planetary Nebula (Dumbbell Nebula) Palomar 2 - Globular Cluster CCD Assisted Polar Alignment Astrometric & Photometric Monitoring 
- SS Cyg (Dwarf Nova)
- BL Lac (Blazar)
- U And, W And, U Her (Mira variables)
- Z And, SZ Her (Variable)
- SU UMa (cataclysmic variable)
- Barnard's Star, 61 Cyg, Groombridge 34, HIP 3829, Teegarden's Star (Nearby Stars)
- Session duration 3.2 hr - CCD operation of -20 degC (at 81% average cooling). - main objectives were threefold :- 
i) acquire images of a few specific variable stars
ii) check improved polar alignment of the telescope.iii) check the performance/robustness of my camera/telescope control software shell which had just been upgraded from VB.Net/Studio 2001 to VB.Net/Studio 2005 [this was totally successful and no bugs or other problems were noted, apart from a couple of small cosmetic issues without the interface]. - opportunity was taken to acquire images of Palomar 2 and M27 and baseline photometric images of SZ Her. - More Notes - 
Baseline images
| SZ Her (Hercules) | 
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| Annotated CCD Image 3 x 60 sec exposure (average combine), 2x2 binning, C Filter 2007-09-02 21:28h UT (#209062-68) | 
| Reference Stars | 
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| Annotated CCD Image 60 sec exposure, 2x2 binning, V Filter 2007-09-02 21:25h UT (#209063 | 
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Single 3 minute unguided exposure of M27 taken as an independent check on polar alignment quality. The image shows pinpoint stars, without any obvious sign of star trailing [ elongation analysis ]
| M27 (Vulpecula) | 
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| CCD Image 3 min exposure, 2x2 binning, C Filter 2007-09-02 23:08h UT (#209158) | 
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| Palomar 2 (Auriga) (Image effected by cloud/light from moon) | 
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| CCD Image 3 x 2 min exposure (average combine), 2x2 binning, C Filter 2007-09-02 23:15h UT (#209161-63) | 
| Palomar 2 - detail | 
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| Annotated CCD Image 200% size, cropped (image details as above) | 
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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 209 (2007-09-02) | 
| Last Updated : | 2015-05-16 | 
| Site Owner : | David Richards | 
| Home Page : | David's Astronomy Web Site |