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David,
Haven't heard from Brent for over a year.
Hugh may comment, he'd be more familiar with Brents
boat.
I know he got the camera & monitor from a local
business (NZ)
Alan
----- Original Message -----
Sent: Saturday, February 06, 2010 8:57
AM
Subject: RE: [PSUBS-MAILIST] optronic
mast
Brent,
What kind of camera did you use?
What type of monitor?
Nice picture by the way...looks like
tons of
fun.
David Bartsch
From: alanjames@xtra.co.nz
To: personal_submersibles@psubs.org
Subject:
Re: [PSUBS-MAILIST] optronic mast
Date: Sat, 6 Feb 2010 08:38:30
+1300
Here's a picture of Brent Shaws "Dry Dive".
It has a camera at the top of an air intake pipe. The
pipe must be detachable
as I've seen pictures of it in transit with it down. He
was very happy with it.
Alan
----- Original Message -----
Sent: Saturday, February 06, 2010 7:36
AM
Subject: RE: [PSUBS-MAILIST] optronic
mast
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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