Article View: sci.astro
Article #3734Re: Frosty the telescope
From: Dave Chaloux
Date: Tue, 26 Jan 1993 16:56
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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<1993Jan19.174752.2575@nsisrv.gsfc.nasa.gov> <1993Jan22.211557.11926@craycos.com> <24JAN199301451186@reg.triumf.ca> <1993Jan26.002936.18268@craycos.com>Show Full Headers
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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 Lines: 22 Nntp-Posting-Host: mandolin.mitre.org