Observing a celestial body through a telescope is not always comfortable, because the optical tube can be tilted vertically if you are pointing at the zenith. The use of a diagonal then becomes essential. Using a prism or flat mirror, a diagonal turns the image at a 90° angle. It is inserted into the eyepiece holder before the eyepiece. It has the particularity of straightening the image vertically but not horizontally.

Takahashi offers a prism diagonal, of very high optical quality and with a top-of-the-range finish, which will optimise the performance of your lens. The mechanical output is 1.25" (31.75 mm) female barrel, with a clamp ring. The input is a 1.25" (31.75 mm) male barrel. The inlet barrel has no thread for screwing on a filter. The metal backfocus length of the diagonal is 63.5 mm long.

A diagonal is not compatible with Newtonian reflectors.

Scope of Delivery:

• Diagonal Prism