David's Astronomy Pages Images - Session 534 (2012-12-18)

Images (S533)

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Images (S535)

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Session Notes

Jupiter (1107) Lictoria - Minor Planet   Photometric Monitoring - Variables - Z And, TT Ari, CI Cyg, S Cyg, SS Cyg, SZ Lyr, DY Per  - RX And & BL Lac attempts failed (stars too dim) - GK Per attempt failed (due to wind)     Astrometric Monitoring - Nearby Stars - None

- Late Evening session (3.2 hrs duration).  Session terminated when stars became to significantly dim / or loose clarity in CCD Images. Upon investigation it was found that there was dew on the primary mirror (from internal condensation in LX200 tube) - Session operated under semi-automated control, with remote monitoring from indoors computer.   - Ambient Temperature: Initially dropping from +2.0°C down to -0.5°C, before rapidly rising to 5°C as a warm front came through - CCD operation -30°C (at 81% average cooling).   - main objectives of the session were to acquire images of selected project stars for ongoing photometric and astrometric analysis. Opportunity was taken to acquire further images of Lictoria as it moves towards it forthcoming occultation of HIP 20885 on Dec 27th, and Jupiter. -

Jupiter 

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(1107) Lictoria - Minor Planet

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