indoor temperature to outside temperature

trenny (John) · #1 22-01-2011, 06:45 PM

What problems can arise from moving your telescope from indoor air temp of approx 23 deg to outside air temp(in winter) of as low as 5 deg ?

trenny.

sheeny (Al) · #2 22-01-2011, 06:54 PM

The biggest and most noticable problem is likely to be poor seeing while the scope cools. A fan helps to speed up cooling.

Al.

pgc hunter · #3 22-01-2011, 06:57 PM

Nothing, except for bad thermals and boundary layer of warm air rising off your mirror. A fan will help greatly.

leon · #4 22-01-2011, 08:05 PM

Put your gear out there early, a number of hours, and let it cool slowly to ambient temp.

Leon