[sac-forum] Missing URL

About a month or two ago someone sent out a URL that did eye piece 
calculations.  They type of which I'm keenly interested in now.  Unfortuantely 
it has been either misplaced or deleted from my system.

So the short story for requdst is a URL for calculating power, apparent and 
true field of views.  Naturally having to input focal lengths of scope and eye 
piece need to be supported.

Thanks and clear skies,
aj

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