This is something I whipped up to go stargazing with a friend. It allows you to take pictures through the telescope with pretty much any Pentax camera that uses a K mount.I printed mine with black PLA, two walls, 20% infill and with a part fan it printed without the need for any supports. Tested with my Pentax K-x. NOTE: The mount is supposed to be a snug fit to prevent light from leaking in. If your printer is not well calibrated or your slicer doesn't handle small details well, you may have to do some filing. Also, for the sake of your camera please ensure it is locking properly before using it!