Our mini telescope in combination with a simple C-mount camera, such as the "Rasperry Pi HQ" camera, makes it possible to take good pictures of sunspots and moon craters. However, the telescope can also be used for terrestrial applications. Almost all components can be printed quickly and easily and assembled in a few simple steps. All you need for the optics is an achromat (2-lens lens) with a diameter of 31mm and a focal length of 135mm, which can be found easily and cheaply at several online retailers.
Everything you need for printing and a list of required parts can be found here. For a first impression and to make the assembly as easy as possible, there is a tutorial right here!
Have fun setting up and experimenting!