20.11.20

20.11.2020 Foggy dew!

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Friday 20th 0930 34F, clear sky with bright sunshine after a light frost. The neighbour's tree shadows on the dome are only now moving away. 

10.00 37/36F Everything is fogged up! I have cleared the D-ERF with the hair drier. The rest is a matter of patience and the dew bands.

A spot is just visible in the SE quadrant through the misted filters. The total draw on the new PSU is now 4.5A. 3 dew bands plus AWR drives. The optical mist is slowly clearing to show surface detail. The back of the D-ERF is fogged. I'll give the dew bands a chance before dismantling it.

10.20 Despite a 3/4 turn on the control knobs there is very little heat so far! The objective is misted on all flour surfaces! The second dew band is warming now. 77F. This is on the main tube just behind the objective cell. 

10.30 The misted optics are still spoiling the image. A 3/4 circle of the objective aperture is opaque. 

11.00 42/38F. Objective still misted up but the circles are shrinking. The dew bands have stopped working properly. I'm using the sensor on the Indoor/Outdoor digital thermometer and the reading has dropped right back to 62F. Still drawing 4.5A. 

I became ill and had to abandon today's imaging session.


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