David's Astronomy Pages Images - Session 476 (2011-07-14)

Images (S475)

Images Sessions

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Images (S477)

Objects

Session Notes

SS Cyg - Variable Star     Photometric Monitoring - Variables - RX And, U And, Z And, R CrB, CY Cyg, S Cyg, SS Cyg, BL Lac, DY Per, GK Per, FG Sge, U Sge, V Sge      Astrometric Monitoring - Nearby Stars - Ross 248 (HH And), Barnards Star, 61 Cyg, Gliese 412, Groombridge 34, Groombridge 1830

- Late Night session (2.0 hrs), Excellent Seeing. Full Moon, NLC in northern sky. - Session operated under semi-automated control, with remote monitoring from indoors computer.  - Ambient Temperature: 4.5°C (minimum)  - CCD operation -20°C (at 60% average cooling).   - main objectives of the session was to acquire images of selected project stars for ongoing photometric analysis , following 2 month observing break.

SS Cyg - Variable Star

SS Cyg (Cygnus) Example of image from session showing excellent seeing (FWHM ~ 2 arc sec )

CCD Image (cropped) 5 sec exposure (single frame), 3x3 binning, C Filter  2011-07-14 00:27 h UT  (#476054) 12" LX200R  (at f/9.7) + ST-10XME

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