3D printed accessories for hassle-free astrophotography

Made in Germany, shipped from Germany

Belt drive for ZWO EAF for the use with the TS-Optics 2″ MONORAIL M90 (MonorailM90) focuser

The provided adapter set allows using of ZWO EAF with the TS-Optics 2″ MONORAIL M90 (MonorailM90) focuser (which is, for example, integrated in the popular GSO RC8 telescopes with a belt drive.

(use the arrows on the left and right sides in the middle of the frame to scroll through pictures)

Compared to other adapters and standard solutions from ZWO, this adapter is much more compact and provides a clutch mechanism allowing maunual control of the focuser when needed, for example for collimation.


  • 16 teeth pulley incl. mini-screws for mounting on the EAF
  • 230mm timing belt
  • 4x M3 18mm blots for mounting of the focuser
  • 4x M3 washer
  • M3 25mm axis bolt
  • M4 12mm trimming thumb screw
  • M4 nut for trimming
  • EAF base plate with integrated knurled nut
  • Focuser holder plate

If you have questions, feedback or suggestions for custom changes, please contact us using this form.

Available on backorder


VAT exempted according to UStG §19
Delivery Time: ca. 10 workdays
Additional costs (e.g. for customs or taxes) may occur when shipping to non-EU countries.

Available on backorder