GSO ELLIPTICAL SECONDARY MIRROR 70mm QHY15 2 x 47 tooth pulleys

2 x 47 tooth pulleys

as well as preventing binding between two M68 threaded parts

By changing the distance to the camera sensor

this features cutouts for seamless cable routing

Another significant advantage of very low friction is that the risks of motor slipping during GOTO operation is virtually nil

GSO ELLIPTICAL SECONDARY MIRROR 70mm QHY15 2 x 47 tooth pulleysThe GSO 70mm elliptical secondary mirror is ideal for amateur telescope makers and is perfectly suited to the Geoptik Nadirus 12" Dobsonian. GSO secondary mirrors are offered in sizes from 62. 5 88mm to suit a variety of primary mirrors. Well known for their excellent quality, GSO mirrors are some of the best available in their price range. The secondary mirror does not come with a holder, but can be glued in place. The mirrors are made from BK 7