Hi all,
I wrote a while ago about moisture in my C14 that was frezzing on
the inside of the corrector plate. Wayne G. and Paul A. responded
with suggestions. I did try these with good success. Particularly,
by inserting a 1/2" piece of PVC through the primary center and
blowing low pressure, filtered dry air through it for 10 minutes, the
problem has cleared up. I dried the air by loosly filling the 1/2"
pipe with paper bags of dry silica gel, and put a piece of HEPA rated
filter material on the input to the small fan. The air flow was very
gentle, I did not measure its rate of flow but doubt if it exceeded
one air change per minute.
Since then, I've been putting the scope to bed with a dry silica
gel pack in the eypiece tube. In spite of some cold weather that
frosted the outside of everything in the observatory, the corrector
stayed clear.
Thanks for the help.
Regards,
Gary
