Not sure if I'm posting in the correct subreddit (if not I'd appreciate a point in the right direction).I am attempting to build a periscope with a lens relay roughly 5 ft in length out of PVC. I know the basic principles behind a periscope, but wanted to incorporate the lens relay to improve the image size and avoid seeing any part of the PVC tube during viewing. Most importantly, I wanted the image to be magnified by a few times as I want the periscope to be able to view things at a greater distance.Here is an example of what I am going for (see right): https://en.wikipedia.org/wiki/Periscope#/media/File:Periskop_linsen.svgOne idea I had was to incorporate the body of a monocular into the PVC because I believe it already has some form of lens relay inside it. I just don't know enough about this stuff to be sure if it will work... I just would like some input and maybe some pointing in the right directions before I go on a spending spree to try it.Does this seem possible? If not, could anyone suggest specific types of lenses I should be looking at for the relay? The PVC tube will have a 3" diameter with a length of about 5'.I truly appreciate any advice! via /r/DIY http://bit.ly/2W7Nosq
