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Science Forum Index » Astro - Amateur Forum » Pyrex mirror "crisis"?
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| George Normandin |
 Posted: Mon Mar 19, 2007 8:21 pm |
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I seem to remember something about Corning no longer making Pyrex and that
this will result in the tripling in price of mirrors and mirror blanks. The
impact would be greatest on the large premium Newt mirrors used in big Dobs.
I've even heard that one or more of the premium mirror makers will soon be
going out of business because they can't get blanks. Does anyone know if
this is true? If so it may be time to buy the biggest mirror you think
you'll want in the future right now.
George N |
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| Llanzlan Klazmon the 15th |
| Posted: Mon Mar 19, 2007 10:54 pm |
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"George Normandin" <gnormandinNOSPAM@stny.rr.com> wrote in
news:45ff370f$0$17137$4c368faf@roadrunner.com:
Quote:
I seem to remember something about Corning no longer making Pyrex and
that this will result in the tripling in price of mirrors and mirror
blanks. The impact would be greatest on the large premium Newt mirrors
used in big Dobs. I've even heard that one or more of the premium mirror
makers will soon be going out of business because they can't get blanks.
Does anyone know if this is true? If so it may be time to buy the
biggest mirror you think you'll want in the future right now.
George N
I'm sure the Chinese can produce borosilicate glass cheaper than Corning
were producing it. The quality might be an issue for a while.
Klazmon.
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| Jan Owen |
| Posted: Mon Mar 19, 2007 11:22 pm |
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"Llanzlan Klazmon the 15th" <Klazmon@llurdiaxorb.govt> wrote in message
news:Xns98F9A1C706E05Klazmonllurdiaxorbgo@203.97.37.6...
Quote: "George Normandin" <gnormandinNOSPAM@stny.rr.com> wrote in
news:45ff370f$0$17137$4c368faf@roadrunner.com:
I seem to remember something about Corning no longer making Pyrex and
that this will result in the tripling in price of mirrors and mirror
blanks. The impact would be greatest on the large premium Newt mirrors
used in big Dobs. I've even heard that one or more of the premium mirror
makers will soon be going out of business because they can't get blanks.
Does anyone know if this is true? If so it may be time to buy the
biggest mirror you think you'll want in the future right now.
George N
I'm sure the Chinese can produce borosilicate glass cheaper than Corning
were producing it. The quality might be an issue for a while.
Klazmon.
....or, perhaps even better, move right on into a Chinese-made fused
quartz...
--
Jan Owen
To reach me directly, remove the Z, if one appears in my e-mail address...
Latitude: 33.6
Longitude: -112.3
http://community.webshots.com/user/janowen21 |
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| Curtis Croulet |
| Posted: Mon Mar 19, 2007 11:39 pm |
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