December 6, 2009 on 11:51 am | In Mars, Planets | Comments Off
The first night of the winter where we had frost (25°F) at the Dutch Observatory. The humidity was high, 85%, and I had to interrupt twice to keep the frost off the corrector plate. I am pretty happy with the image at average seeing and transparency. Clouds can be seen over Cydonia extending to Niliacus Lacus and Mare Acidalium.
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