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New AT 6" and 8" Classical Cassegrain

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#1301 quilty

quilty

    Vostok 1

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Posted 11 May 2021 - 12:36 PM

It is simply necessary to take for granted that this telescope has an aperture of 138 mm instead of the stated 150 mm. For this money, such an aperture is not bad.

and take for granted at the same time a linear CO of as much as 44%. Which is not so good. But we can't help it which I slowly take for granted, too


Edited by quilty, 11 May 2021 - 12:38 PM.


#1302 Stopforths

Stopforths

    Vostok 1

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Posted 11 May 2021 - 03:02 PM

How could this operation free up the 150mm aperture if the aperture is reduced due to the secondary mirror being too small?

when you pull the primary back relative to the secondary it needs a smaller secondary size.   




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