Focus adapter for Omegon and GSO RC 6 and 8 inch and William Optics GT81 | Starlight

With a Ritchey-Chrétien lens, you focus with the focus ring, and that must then support the weight of the camera, filter wheel and guide. With this focus ring adapter for the GSO RC of 6 and 8 inches and the Omegon RCs of the same size, you attach a Feather Touch focus ring to it.

The adapter from Starlight Instruments is intended for Ritchey-Chrétiens of 6 and 8 inches from Omegon and GSO, and also for the William Optics GT81 refractor. You can find more about this type of telescope in our Ritchey-Chrétien telescopes.

Before ordering, check that your telescope is one of the models mentioned. A sturdy focus ring that stays in place is important for an RC. After changing the focus ring, check the collimation, see our explanation on adjusting the telescope.

For focusing with the camera on the RC’s there is a Bahtinov mask tailored to your tube.