I guess the idea is to convert the lens to spotting scope, something like http://www.bdimitrov.de/kmp/lenses/a.../monocular.jpg .
From http://www.bdimitrov.de/kmp/lenses/index.html#adapters : "The monocular converter K converts K mount lenses to monoculars. It provides magnification equal to that of a lens with five-times the focal length. For example, a 50mm lens appears to be 250mm and a 300mm lens appears to be 1500 mm."