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David,
Do you have experiance with building a periscope? or do you have any
suggestions for a small one for a psub? I wouldn't mind having
one that I could retract. I would have to find a sutible
place for it however.
Brian
Jens,
With the camera
mounted to the upmost portion of the mast and rotated with this mast, this
inversion will not take place...I have in my study of actual periscope optics
come across this inversion.
I think one could spend a lifetime
studying this area and still not be fully satisfied with the results...You
have to eventually say to your self this is simply good enough and move
on.
David Bartsch
> Date: Fri, 5 Feb 2010 15:41:46 +0100
>
Subject: RE: [PSUBS-MAILIST] optronic mast
> From:
laland@artematrix.org
> To: personal_submersibles@psubs.org
>
> David
>
> ** My mast camera will not be this fancy but
will able to be rotated to
> ** hopefully make up for any shortfall in
viewing angle.
>
> I have also looked into a version using a
fixed, vertical mounted video
> camera inside a tubular mast, and only
rotate the external optics above.
>
> However, this method will
produce the exact same effect for the observer
> as the Royal Navy
submariners had to deal with in World War One: a
> periscope image that
gradually turned itself upside down as it approached
> the aft
direction.
>
> The funny thing, though, is that those guys
protested when they were first
> introduced to a more modern periscope,
since they claimed the old system
> actually helped them to always know
which direction they were looking.
>
> Best regards,
> Jens
Laland
>
>
>
>
>
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