Some of you may remember I had cut a hole in the side of my OTA to remove the boundary layer a few months back. I had since cover it with cardboard and a rubber band once i got my peltier system up and running.
Well I took it off and now am peltier cooling extremely well.
I can keep the mirror at 1 degree below ambient as it is falling.
Ok....But why is it cooling more efficiently just because it has a hole in the tube 90 degrees to the peltier. Hell, I can't remember....The peltier is at the back of the mirror in an enclosed system isn't it?
from the bottom up, i have peltier, cold plate, fans blowing onto back and around mirror, mirror and then say 1/2" above top face of mirror, the hole at 90 degrees.
I think that the air can escape / interact with ambient as opposed to trying to cool 1250mm x 290mm of air and having trouble
note i was feeling guilty, so i followed matt and ice and tidied up the cables a bit
hmmm, my mirror looks nice with those dratted etchings
this is the hole i cut to extract the boudary layer a few months back, which i now attribute to a colder mirror ie way quicker to beat the ambient to a settled temp.
I guess if your mirror gets foggy with dew you can stick a hairdryer in the hole.
Have you had to do this yet?
Does that then change the mirror temp much?
Welcome to the club.
