Sponsored By:

Subject: Re: [M]: Baffling a Starfinder
From: Robin Casady
Reply To: mapug@shore.net
Date: Tue May 20 00:08:18 1997

Kevin Layou wrote:

>Robin Casady wrote:
>>
>> Kevin Layou wrote:
>>
>> >I am considering baffling my 12.5" Starfinder dob...
>>
>> I overheard Kevin Matlock make an interesting suggestion. He said to use
>> a thin sheet of air-filter foam. This is a coarse open foam. Paint it
>> black from four directions to insure it is completely covered. Cut it a
>> little oversize so when you put it inside a tube it overlaps somewhat.
>> Then if you but the ends together it holds itself in place. He made a
>> comment about it being like thousands of knife edge baffles, and if you
>> sealed the end of the tube and stuck your head in the other end it was so
>> dark it hurt your eyes.
>>
>> Robin Casady
>> http://www.scruz.net/~rcasady/
>>
>> Macintosh software for:
>> Managing URL Bookmarks
>> LX200 telescope control
>Hi, Robin.
>After pondering your reply, I am considering it, seems easier than
>measuring,diagremming and cutting out baffle rings. My questions are
>what is this air filter foam you refer to, how thick is it and where can
>I get some? -Kevin
>
First let me make a correction. It was Kevin Medlock (not Matlock) who
suggested this. All I know about it is that it is an open foam that is
fairly coarse. It is used for air filters. Kevin said something about a
foam supplier in San Jose who will cut pieces off a large block. I don't
know much more than that, except that you should make sure that the black
paint you use will not dissolve the foam. A good foam supplier should
know.

Robin Casady
http://www.scruz.net/~rcasady/

Macintosh software for:
Managing URL Bookmarks
LX200 telescope control