[Matty P (Matt)]

Originally Posted by Robert_T

I have one, but don't often use it as I tend to setup well in advance (hours) and come to the scope well-cooled.

They help for when you setup at dark and want to be imaging within the hour. The benefit is probably felt more the larger your SCT. Small benefit for a C9.25, probably essential for a 14in SCT...

Thanks Rob,

Just what I wanted to know. I always put my SCT out a few hours prior to imaging so cooling to ambient temperature shouldn't a problem.

Thanks.