Dew.. water everywhere

[davieradio]

Hi Guys,

I need some advice, I was out observing last night It was a great night with the moon not rising till quite early in the morning.

After 2hrs my corrector plate was dewed over even though I was heating it , all my eyepieces had a layer of water on them

Could it be that even though the conditions were excellent for veiwing the temp did not dip to below freezing , that would make for wet conditions, but viewing with the eye was excellent?

so there must be an ideal with dry cold which I assume is very cold??

Should it be worthwhile making my eyepiece box heated?

Dave

I am thinking now I will get one of these wee 12v hair dryers to try out.

has anyone tried them? they look like a quick fix.

[RobH]

Make yourself a dewshield out of a foam camping mat for your SCT. Make it so it fits over the dewband. The dewband should be on the main tube, behind the corrector, not level with it.

Keep your eyepieces covered when you're not using them, and get a 12v hairdryer.

Cheers

Rob

[davieradio]

OK Bob.

That is what I'll do.