Thanks, Rashad.
Rich
>I was surprised to read this:
>
>The passage below is from a bio I found on Herschel.
>
>"At the end of the Seven Years war, William Herschel came to live in
England
>and found work firstly in London as a copyist and then in Durham as a
>teacher. At the same time, he continued his linguistic, mathematical and
>astronomical studies and also polished the first bronze mirrors that he was
>to use in his first telescopes."
>
>Just imagine, cleaning your mirror meant that you also had to re-figure it!
>
>
>----- Original Message -----
>From: "Bob Czerwinski" <bczerwin@No-Spam>
>To: "'The Astronomy Connection'" <sf-bay-tac@No-Spam>
>Sent: Saturday, April 26, 2003 11:49 AM
>Subject: RE: [TAC] Astro Quiz part?
>
>
>> > > Just a guess, based on the material used by Lord Rosse: Tin
>> > > and Copper?
>>
>> > Nope.
>>
>> Platinum (platina), maybe? That's from about the mid-1700s. Pretty
>> gray, though.
>>
>> ..Bob...
>>