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Article #3734

Re: Frosty the telescope

#3734
From: Dave Chaloux
Date: Tue, 26 Jan 1993 16:56
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Donald Arseneau writes:

>I find that eyepiexes fog up by looking through them!  I think it is the 
>moisture coming from my eye.  Often standing up straight for half a minute
>lets it clear up; sometimes I lift out the eyepiece, hold the barrel in my 
>fist, and wave it around.

Personally I have very little problem with dewing of my objective. (The 20"
mirror is protected by LOTS of tube).

I do have problems with my eyepieces and occasionally with my diagonal. I have
cured this by having a very low wattage heater on the diagonal. I also have
a homemade heating element available near the eyepiece. If dewing is a problem
I simply turn it on and wrap it around whatever eyepiece I am using at the
time.

Finally I have a electric heating pad attached to my ladder. When my eyepieces
are not in use I have them in a homemade block of wood drilled for 1.25" and
2" attached to the ladder (where the paint would normally go.) The heating
pad gets plugged in and goes over the eyepieces.

This works great.
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Message-ID: <1993Jan26.165653.14347@linus.mitre.org>
Path: arc1-ca.pugleaf.net!sparky!uunet!portal!lll-winken!overload.lbl.gov!agate!linus!linus.mitre.org!mandolin!chaloux
References: <1993Jan19.174752.2575@nsisrv.gsfc.nasa.gov> <1993Jan22.211557.11926@craycos.com> <24JAN199301451186@reg.triumf.ca> <1993Jan26.002936.18268@craycos.com>

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Path: arc1-ca.pugleaf.net!sparky!uunet!portal!lll-winken!overload.lbl.gov!agate!linus!linus.mitre.org!mandolin!chaloux
From: chaloux@mandolin.mitre.org (Dave Chaloux)
Newsgroups: sci.astro
Subject: Re: Frosty the telescope
Message-ID: <1993Jan26.165653.14347@linus.mitre.org>
Date: 26 Jan 93 16:56:53 GMT
References: <1993Jan19.174752.2575@nsisrv.gsfc.nasa.gov> <1993Jan22.211557.11926@craycos.com> <24JAN199301451186@reg.triumf.ca> <1993Jan26.002936.18268@craycos.com>
Sender: news@linus.mitre.org (News Service)
Reply-To: chaloux@mandolin.mitre.org (Dave Chaloux)
Organization: The MITRE Corporation, McLean, Va
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Nntp-Posting-Host: mandolin.mitre.org