top of page

HF3 Focuser (soon)


The Hercules Telescopes focuser is a masterpiece.  
With it's sleek and perfectly cylindrical design, it can fit where space is limited or in the middle of a prime focus telescope like our HTP500.  It's Rigidity and high precision without backlash make the HF3 focuser a perfect choice for an high quality image train.
The linearity movement is made using precision guide rails that stay perfectly aligned even at outermost position with lot of weight.
HF3 is design so that a 3 inches corrector can fit inside and save space on your image train. 
Camera adaptor can be mounted on the focuser using 78 X 1mm thread or with 6 X M4 screws.
(Adaptors can be found at
The HTEC commander is request to use the HF3 (Optional).
HF3 Focuser


  • 77mm aperture (3 inches)

  • 29mm travel with 105Nanometer résolution

  • Extremely strong with 20kg capacity (44 lbs)

  • 102 nanometers resolution

  • High precision built with precision guide rails

  • Linear movement with anti-backlash ballscrew

  • Controlled by the HTEC commander (Optionnal)

  • 160mm outside diameter (cylindrical design)

  • 99mm height, 2.1kg weight

Price : 2 200$

Special introduction: 1 800$

For a limited time

Technical drawing

bottom of page