ESATTO is the perfect focuser for Ritchey-Chretien telescopes, that are great instruments for deep-sky astrophotography at medium-long focal length. Ritchey-Chretien telescopes were, just a few years ago, very expensive but now, especially the models produced by GSO, are very affordable and allow any amateur astronomer to own and use a Ritchey-Chretien telescope. Unfortunately these telescopes comes standard with a focuser that has not the load capacity requested for the heavy cameras and accessories commonly used in deep-sky astrophotography: let's see how you can use ESATTO as a new and better focuser for Ritchey-Chretien.
The new robotic microfocuser!
The most advanced made in Italy, only € 595,-