WO WhiteCat Autofocuser

The brand new William Optics WhiteCat telescope is an alternative to the widefield lens shooting with 250mm of focal length. With the helical focuser, focusing can be quite time consuming process even with the Bahtinov mask (especially with narrowband filters). Our autofocuser will save you time and frustration by providing pinpoint stars on your beautiful photos of the cosmos.

Listening to your feedback and following the new developments from William Optics, we have refreshed our line of cat series autofocusers.


With the extension block (3D printed or aluminium), we raised the telescope just high enough to snugly fit the motor between the telescope and the dovetail. This results in a balanced, compact solution, leaving ring available to other accessories, like William Optics guide scope plate that comes with the SpaceCat. Our kit is compatible with 110 and 210 dovetails that come with the cat telescopes.

You are getting:


OPTION: ALU extension block
OPTION: v1 ring guide scope shoe
OPTION: temperature sensor
OPTION: remote controller
  • 1x AF3s unit
  • 1x 3D printed 16T MXL pulley
  • 1x 3D printed helical focuser MXL ring
  • 1x 3D printed mounting plate (compatible with both 110 and 210 dovetails)
  • 1x NEMA 14 L bracket
  • 1x MXL timing belt
  • 2x 10mm M3 bolt (for ring)
  • 8x 6mm M3 bolt (for L bracket)
  • 2x 16mm M6 bolt (for mounting plate)
  • 2x 50mm M6 bolt (for extension block)
  • 1x 3D printed extension block
  • OPTION: ALU extension block (20€)
  • OPTION: v1 ring guide scope shoe (10€)
  • OPTION: temperature sensor (15€)
  • OPTION: manual hand controller (20€)
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AF3s details
110 dovetail assembly instructions 210 dovetail assembly instructions

AF3s Details

important
recommended power adapter: 12V - 14V MAX (1A min) with 5.5mm x 2.1mm plug (not included)
connectivity (not included): Mini USB cable OR Micro USB cable (2020)

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