Rack & Pinion focuser for the GT-81
- Have taken delivery of the new R&P focuser and have swapped it for the frustrating Crayford DDG. I now have a scope that behaves itself. Focuser retains superfluous thermometer but have lost the digital readout (not a problem as it was not backlit). RDF base easily anchored in single hole of new focuser as on the Crayford.
Glad I swapped.