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CCD Images - Session 299 (2008-09-03)

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Objects Session Notes
Bullet NGC 6517 - Globular Cluster
Bullet Astrometric & Photometric Monitoring
- SS Cyg (dwarf nova)
- W And, U Her (mira variables)
- RX And, Z And, R CrB, SS Her, RU Peg (variables)
- 61 Cyg (Nearby Stars)

- U And, U Sge attempts (failed due to cloud)

 

- Late evening session (1.9 hrs) clouding up towards end of session.
- Ambient Temperature 6 degC
- CCD operation of -20 degC 
(at 70% average cooling).  
- main objective was to acquire images of key selected stars for ongoing photometric and astrometric analysis. 
- opportunity take to acquire images of a previously unobserved globular open cluster from the Herschell 400 Catalog
-  

 


NGC 6517 - Globular Cluster

NGC 6517 / Herschell 199-2 (Ophiuchus) 
Image
CCD Image 
3 x 60 sec exposure (average combine), 2x2 binning, C Filter
2008-09-03 21:30 UT (#299026-28)

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Astrometric and Photometric Monitoring

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This Web Page: CCD Images - Session 299  (2008-09-03)
Last Updated : 2015-05-16
Site Owner : David Richards
Home Page : David's Astronomy Web Site