This pdf document shows an example of the math behind the exhaust system and some of the equipment used. It is at least a starting point.
This image I made using a Wisner 4x5 Technical Field Camera. I made a lensboard out of a piece of matboard, cut a square hole in it and taped a piece of very thin brass to it. I put a hole in the brass about .36mm which made the focal length come to about 65mm and the aperture or f/stop about f/181. I used Ilford Delta 100 as the film and set the exposure index to 100. Exposure unclear, but could be 8mins 32secs. This is taken at Presque Isle State Park, Erie, PA on March 6, 2019
I don't have a degree in art or photography. My degree was in music. If you can read music, there's no end to what you can do. I have a passion for photography and art and a life time's worth of experience, a lot of common sense and a father and grandfather (both engineers) who gave me the ability to work with tools. If I can do this, anyone can. It's not difficult, and it is fun!