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CCD Images - Session 256 (2008-01-21)

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Objects Session Notes
Bullet Ross 248 (HH And) - Nearby Star
Bullet Astrometric & Photometric Monitoring
 - BL Lac (Blazar)
- RX And, Z And (variables)
- HH And, Teegarden's Star, Groombridge 34 (Nearby Stars)
- Evening session (1.2hr). Cold. Poor sky conditions. Cloud rapidly developing
- CCD operation of -30 degC (at 80% average cooling). 
- main objective was to acquire images of certain selected stars of ongoing photometric analysis, in particular SS Cyg and RX And

Ross 248 (HH And) - Nearby Star

Ross 248 / HH And (Andromeda)
Regular astrometric measurements of Ross 248 record cyclic motion
resulting from combination of proper motion and parallax.
Ross 248 lies around 10.3 light years from the sun.  
It is a main sequence red dwarf and is variable in brightness.
Image
 
Earlier Image of Ross 248 / HH And
Image
CCD  Image 
20s exposure, C filter
2005-10-05  19:27h UT (#97044)
 

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Astrometric and Photometric Monitoring

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This Web Page: CCD Images - Session 256  (2008-01-21)
Last Updated : 2015-05-16
Site Owner : David Richards
Home Page : David's Astronomy Web Site