Hi,
Cloud and thick unfortunately.
Just removed the 3 ice packs that were strapped around the primary mirror end of the tube for 4 3/4 hours.
at the beginning ambient temp=16.4 and internal tube=18.1
4 3/4 hours later ambient temp=12.4 and internal tube=11.5
The minimum temp in the last 24 hours was 8.4 and max=23.9 this is inside the observatory.
Unfortunately I couldn't check what the seeing through the telescop was like, because of the thick cloud.
Does a telescope that is 1 degree above ambient have the same seeing caracteristics as a telescope that is 1 degree below ambient?
The research will continue.