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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