Re: [ATM] Strange Chinese Telescope Design f/3.6, spherical mirror

["Don Ware" <mimas@charter.net>]

----- Original Message ----- 
From: "Guy Brandenburg" <gfbrandenburg@yahoo.com>
To: <atm@atmlist.net>
Sent: Wednesday, December 22, 2004 10:27 PM
Subject: [ATM] Strange Chinese Telescope Design f/3.6, spherical
mirror


> This evening, a fellow brought in a no-name, low-cost,
> short-tube, 6-inch reflecting telescope that he had
> bought in China when he was stationed (or something)
> in Japan a while back.
.
.
.>
> Does anybody else have any experience with commercial
> scopes like this? Any thoughts?
>

I purchased a 6" f/5 mirror a few years ago to demonstrate mirror
testing for Astronomy Day. I presume the mirror was from China by
the material it was packed in.  The mirror was almost a spheroid,
with a rather deep hole in the middle. While the seller claimed
1/4 wave, mirror was
the worst commercial mirror I had ever seen. I exchanged it, but
second one was about the
same.

Don Ware
http://webpages.charter.net/dware1/



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