Re: A solution to the problem of fogging/dewing optics when bringing the scope inside

From: Guy Macon (http://www.guymacon.com)
Date: 10/17/04 

Date: Sun, 17 Oct 2004 16:55:57 +0000

Martin R. Howell <martinhowell@ilikestarsearthlink.net> says...
>
>On Sat, 16 Oct 2004 20:40:10 +0000, Guy Macon wrot
>
>> If you have room, 4ea 25W bulbs in series will put out around 8W total,
>> and each individual bulb will run far, far cooler and will radiate
>> almost entirely in the infrared, thus preserving night vision if the
>> light hits your eyes. Also, the bulbs will last almost forever.
>
>It was not my intent to imply that the bulb would be on while viewing
>through the telescope. . .only after bringing the scope inside for the
>night; and then for only a couple of hours.

I was thinking more along the lines of someone else who does the same
thing leaving it on by accident when removing the cap. For your
application, I think the cool running would still be an advantage.
I don't kwow the long term effects of localized heat on sonotube.

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