Objects

Session Notes

NGC 488 - Spiral Galaxy (H III-252) NGC 1132 - Elliptical Galaxy NV Ori - variable star (Type INSB) NGC 5466 - Globular Cluster (H VI-9) NGC 3953 - Spiral Galaxy NGC 4216 - Spiral Galaxy (H I-35) NGC 4189 - Spiral Galaxy Astrometric & Photometric Monitoring - SS Cyg, U Gem  (dwarf nova) - U And, W And (mira) - BL Lac (blazar) - FO And, RX And, Eps Aur, Zet Aur, HR Aur, KR Aur, CC Cnc, SY Cnc, R CrB, RZ LMi, U Mon, CN Ori, FO Ori, NV Or, DY Per, GK Per, RR Tau, ER UMa (variables) - Ross 248/HH And, DX Cnc,  Grooombridge 34, Groombridge 1618, Teegardens Star (nearby stars) CN Leo, Lalande 21185  (failed due to poor transparency and/or dawn)     Session S336a (2008-12-20) Monitoring - RX And, SS Cyg, (variables) - BL Lac, HH And, CI Cyg attempts failed due to cloid    Session S336c (2008-12-23) Monitoring- RX And, GK Per (variables)    Session S336d (2008-12-26) Venus Monitoring- CL Lyr (variable)

- Night session (9.0 hrs), operated under automated control - Ambient Temperature  Initial +2.0 degC  falling to -2.5 degC by dawn (tube temperature recording failed after 1.5 hrs, minimum temperature derived from cooling power via empirical equation from prior sessions)   - CCD operation -25 degC (at 64% average cooling).   - main objective of the session was  to acquire images of key selected stars for ongoing photometric and astrometric analysis.  - opportunity taken to acquire images of a few deep sky objects - automated temperature compensated focusing lost after 1.5 hrs - Session originally attempted on 2008-12-20, but cut short by poor sky conditions cloud after < 0.8 hrs (S336a), SS Cyg  Sessions also attempted on 2008-12-23 and 2008-12-26, but both cut short by poor sky conditions. The few images collected are appended under S336 (as S336c, S336d)