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Communication requires us to establish a protocol, and sometimes we must establish the difrences in the use of words to communicate succesfully. To see example of this try to follow any discussion threads about Collimation howto or similar.
The focal point of the the Primary mirror in a Newtonian is "displaced/reflected/redirected" by the secondary into the Focuser assembly. The focal point is not the secondary its somwhere behind it.
Regards
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