Differences between Pyrex and BK7 Glass?

[Juno]

What is the difference between Skywatchers Pyrex and Bintel's BK7 Glass for Dobsonians?

[Allan_L]

See if this answers your query?

Regards

http://www.iceinspace.com.au/forum/showthread.php?t=17102

[Shiraz]

or http://www.skyandtelescope.com/astronomy-resources/four-infamous-telescope-myths/

[JA]

Am I allowed to say that it's really good for baking? :D

[Juno]

:rofl:

[Juno]

Thanks, that helps a lot.