[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index]
Re: [ATM] 6"mirror, 10" focus?
Bill,
Such a sphere may be used to make a nice Littrow (or is it Fastie-Ebert?)
style spectrograph of medium dispersion.
Do you have a price for this "curiosity"?
Stuart Hutchins
stuart-atm@earthlink.net
Denver, CO
----- Original Message -----
From: "Bill Kelley" <flex@commspeed.net>
To: "The Amateur Telescope Makers List" <atm@atmlist.net>
Sent: Tuesday, May 03, 2005 7:20 PM
Subject: [ATM] 6"mirror, 10" focus?
> ATM list,
> I just tested a 6" X 1" aluminized optic of 10" focal length. The
> substrate is water clear and of unknown material. It tested as the best
> sphere I have ever seen!
> What might our list experts think might be done with it? My last post
> found a home for a scatter plate- perhaps someone may adopt this
> curiosity.
> Bill
>
> _______________________________________________
> ATM mailing list http://www.atmlist.net/
>
>
> --
> No virus found in this incoming message.
> Checked by AVG Anti-Virus.
> Version: 7.0.308 / Virus Database: 266.11.1 - Release Date: 5/2/2005
>
>
_______________________________________________
ATM mailing list http://www.atmlist.net/