Re: APO cooling down

From: Stephen Paul (smarshallpaul_at_gmail.com)
Date: 02/05/05 

Date: Sat, 05 Feb 2005 00:51:05 -0500

RichA wrote:
> On 4 Feb 2005 09:03:14 -0800, MitchAlsup@aol.com wrote:
>
>
>>"But what kind of temperature change are you taking the scope into?"
>>
>>In the summer, the house is 80, the garage is 105dF-110dF and the
>>outsides are 100dF at setup time
>>In the winter, the house is 65, garage is 55dF and outside is 50dF at
>>setup time
>>In the spring and fall, the house is 80dF, the garage is 90dF and the
>>outsides are 85dF-ish
>>Its central Texas.
>
>
> You poor baby! :) Try going from a 70 deg temp to -22 with a 12" SCT.
> In other words, during a 3 hour observing session, it never reached
> bottom and never achieved full resolution.
> -Rich

What you need Rich, is a good 102mm ED F9 Doublet to tide you through
the cold months. Cool down is "comparatively" non-existent. ;-)

-Stephen