Just for note: Lense feature simulate Barlow and Shapley (focal reducer) lenses.

10.03.2013 15:26 "Barry Gerdes" <barrygastro@hotmail.com> :
Hi Steve

When refering to lenses Magnification would be the term to use
However with a barlow I believer multiplier for the magnification is quite appropriate
multiplicity is definitely not the correct word in this case.

Barry

> From: azstefano@me.com
> Date: Fri, 8 Mar 2013 06:54:47 -0700
> To: stellarium-pubdevel@lists.sourceforge.net
> Subject: [Stellarium-pubdevel] Optical terminology
>
> Hi Bogdan:
>
> The best English for for Barlow and telescopes is "magnification" or "magnification factor." In English, multiplicity would be used for the number of instances of something, while magnification is the power that something appears larger.
>
> Steve
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Symantec Endpoint Protection 12 positioned as A LEADER in The Forrester
Wave(TM): Endpoint Security, Q1 2013 and "remains a good choice" in the
endpoint security space. For insight on selecting the right partner to
tackle endpoint security challenges, access the full report.
http://p.sf.net/sfu/symantec-dev2dev
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