Hi all
Me again. Just one more question as I definately am buying an 8" or 10" dob. I gave my local hobby (telescope) store an option to offer a similar setup to what Andrews GS-880 is but his email although polite was quite firm in stating he will not compete against inferior products. He mentioned the Skywatcher range has Pyrex and the GSO has Glass for the mirror. In checking around I don't seem to find any evidence of this being an issue however can anyone shed any ore light on this?
In fact checking around there are many comments about the GSO optics being quite good.
The other fact is as a beginner does this really become a concern?
EDIT: just found this article and answers the question from at least one source
http://www.skyandtelescope.com/howto...tml?page=2&c=y
cheers
Dave