David's Astronomy Pages Images - Session 556 (2013-11-27)

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Images (S557)

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Session Notes

No Images   Variable Stars (photometric monitoring) - DY Per, GK Per   - SS Cyg & BL Lac attempts failed (due to cloud/poor transparency)   Nearby Stars (astrometric monitoring) - None

- Session in two parts S556a  2013-11-24    - TPoint Mapping / Polar Alignment Check S556b 2013-11-27   - Imaging/Slewing Checks & Tracking Rate Checks -   - 2013-11-27  Late Evening session (0.9 hrs duration).  Poor sky transparency - Session operated under semi-automated control, with remote monitoring from indoors computer.   - Ambient Temperature:  3.0°C minimum - CCD operation -25°C (at 68% average cooling).   - main objectives of the combined session was to continue preparations towards an effective  return to imaging, concentrating on the following - TPoint Mapping - Polar Alignment Check & adjustment (* see note)  - BVR imaging of selected variables (including a test of slewing accuracy with TPoint model running)  - tracking rate and adjustment *  Polar Alignment adjustment was not able to be performed due to deteriorating  sky conditions  - Notes 2013-11-27