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M-52, NGC-7635, SH2-157, SH2-158, SH2-159, SH2-161, NGC-7510

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Orion XT-12 Classic

Started by alanzaza, 09/14/2005 06:59PM
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Posted 09/14/2005 06:59PM Opening Post
Alan Zaza
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Join Date: Feb 2004

Location: Campbell CA, US

Posts: 20

[COLOR="Blue"][/COLOR]Hi All,
I was wondering about the quality of the mirror since it's BK-7 glass rather than pyrex. Mainly concerned about figure and cool down time. :S
Thanks
Alan
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