RE: [PSUBS-MAILIST] my optronic mast idea with sketch

["Brian Cox" <ojaivalleybeefarm@dslextreme.com>]

For a real basic periscope could one have two prisims and then lenses on
each end?  I guess the lens part would take a bit of doing with the correct
focal lenght and all.  Edmunds Scientific has quite a bit of optical
products.

Brian

-----Original Message-----
From: owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org]On Behalf Of Jens Laland
Sent: Friday, February 05, 2010 5:53 PM
To: personal_submersibles@psubs.org
Subject: RE: [PSUBS-MAILIST] my optronic mast idea with sketch


Brian

An optical periscope is actually a rather complicated and accurately built
instrument, see the US Navy WWII Submarine Periscope Manual, at

http://www.maritime.org/fleetsub/

Here is a direct link to one of its fold-outs:

http://www.maritime.org/fleetsub/pscope/foldout/fig4-16.htm

I was very enthusiastic at a time and bought a lot of surplus optics from
these people, ref

http://www.surplusshed.com/

but I have not used any of it in a periscope, yet. :)

Best regards,
Jens Laland

** Sorry, I guess I wasn't very clear, I was thinking of a regular optical
** periscope with prisims and a telescoping mast that would retract flush at
** the top of the psub.  the telescoping part would have to be made up of at
** least three concentric tubes in order to get some hieght since you don't
** have much room to work with in a small diameter sub.
**
** Brian





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