P r i m a L u c e L a b i S r l
E SAT TO u s e r m a n u a l
Application example and
focus position
of your refractor
Refractors usually have very long focuser's draw tube while the ESATTO is a microfocuser designed for the small and pre-
cise movements requested in astrophotography. So,
if you remove a focuser with long draw tube and you connect the
ESATTO, in order to reach the focus you may need one or more extension tubes to install after the ESATTO focuser. For
example, we can consider the ED 80 refractor telescope by SkyWatcher (EVOSTAR 80 ED) or Orion (80 ED).
When you focus on stars, SkyWatcher EVOSTAR 80 ED bring the sensor at 264mm distance from telescope tube.
For this telescope we can use the
2" version of ESATTO and we designed a proper adapter (PL3600230) to connect it di-
rectly to the tube. By removing the 3 screws that fix the original focuser to the telescope tube, you can remove the origi-
nal focuser (please note, sometimes manufacturers use
thread lock
so you may need to apply force to unscrew the loc-
king screws), then install the
PL3600230 adapter instead and finally connect ESATTO.
ESATTO 2" installed on the SkyWatcher EVOSTAR 80 ED telescope instead of the standard focuser.
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