Content Comparison

dome closed all day. good comparison for subsequent days

dome slit opened 1547 UT
vent is blowing outwards

all four vents opened, slit ~10% (by eyeball), extraction fan VFD at 50Hz (oft mis-characterized as "percent") if you wish to check your telemetry.  I will be working on deciphering the extraction fan VFD modbus command structures this afternoon, so fan speed will probably be changing quite a bit

Air temp dropped 5C upon opening the slit. 

Tests for Feb 13: 

1) roll telescope to horizon for storage
2) find biggest fan and blow upwards along dome edge towards slit
3) leave other lower vents closed. We're just circulating air from lower level with vent fan on
4) daytime venting