We have a large telescope that we are in the process of commissioning. One of the items that popped out of the process was the need for a relatively low power finder telescope, with a video feed back into the control area.

We ended up with this as the last test project: a mallincam jr camera, a cmount to Pnetax K mount lens adapter (fotodiox pro PK-C), and an old (film) f2.5 135mm Takumar Pentax lens.

We hope to test it live tonight to see how sensitive the setup is.
The camera puts out an NTSC video signal, which we digitize with an AtoD converter onto a USB device bus to the computer.