Build a 150mm Offset Binoscope

This project describes the construction of an ultra light 150mm Offset Binoscope. It is called an "Offset" binoscope because the two 6" F5 Newtonian reflectors are offset by 46mm which enables the two eyepieces to be angled at approximately 45 degrees to the long axis of the binoscope. This feature provides a much more comfortable viewing angle for the observer, especially as the binoscope orientation approaches the zenith. Ideally the mount can be adjusted in height so that the observer is standing more or less straight upright when observing the zenith and the eyes are at the level of the eyepieces. It then only requires a slight tilt of the head to observe comfortably through both eyepieces.

Another very significant advantage of this type of rectangular construction for the binoscope is that the two Newtonian reflectors are inherently co-collimated by the very compact and combined assembly, using precisely printed parts and aluminum angle struts. The more classic approach o