Re: [PSUBS-MAILIST] OSS viewports

[John Brownlee <jonnie@scarymonsters.net>]

On Tue, 24 Jun 2003, Thijs Struijs wrote:
>It is a simple and cheap way to make the viewports. Flanges can be bought
>of the shelf. No need for a big lathe and no retainer-rings to make. Can
>anyone explane me why it is that these viewports aren't more popular.

	Mechanically, they are simple and easy. Could anyone who has been
down in one describe any dissuading optical properties? It is a very thick
disk of acrylic, but I can't imagine changing the flange geometry is going
to shave off a lot of thickness.


-- 
							John

John Brownlee
Chief Systems Administrator
Scary Monsters Network
jonnie at scarymonsters dot net