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Home / Products / Astronomy Focuser / J009 Dual Speed Focusing Seat with Teeth
J009 Dual Speed Focusing Seat with Teeth Fixed for Telescope

J009 Dual Speed Focusing Seat with Teeth Fixed for Telescope

J009 Dual Speed Focusing Seat with Teeth Fixed is a manual focusing mount for 2″ Newton telescopes, featuring a 1:10 fine adjustment and a 90 mm focusing stroke. It has an M96.5×1 host interface and a 2″ eyepiece interface compatible with 1.25″ accessories. Constructed entirely from metal, it supports stable focusing in astronomical observation setups.

  • Dual speed focusing with 1:10 fine adjustment for precise focus control during planetary and deep-sky viewing
  • 90 mm focusing stroke allows for extended focus range across different eyepieces and optical configurations
  • All-metal construction ensures durability and resistance to thermal expansion in outdoor telescope use
  • 2″ eyepiece interface with 1.25″ compatibility enables use with a wide range of existing accessories
  • M96.5×1 host interface provides secure mounting on Newtonian telescope tubes
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Technical features

  • Focusing stroke: 0–90 mm
  • Focusing method: Manual with 1:10 fine adjustment
  • Host interface: M96.5×1
  • Eyepiece interface: 2″ (1.25″ convertible)
  • All-metal construction for mechanical stability
  • Teeth fixed design prevents backlash during focus adjustment
  • Compatible with 2″ Newtonian telescope systems

Who it is for

  • Astronomy equipment integrators building custom Newtonian telescope systems
  • Distributors sourcing reliable focusing seats for telescope accessory kits
  • Amateur astronomers upgrading focus mechanisms on existing Newtonian telescopes

Specifications

ModelJ009
Focusing Stroke0–90 mm
Focusing MethodManual with 1:10 fine adjustment
Host InterfaceM96.5×1
Eyepiece Interface2″ (1.25″ convertible)
MaterialAll metal

Use guide

  • Install the J009 on a Newtonian telescope tube using the M96.5×1 interface
  • Attach a 2″ eyepiece or convert to 1.25″ using an adapter for compatibility with existing accessories
  • Use the coarse focus knob for large focus shifts and the fine adjustment for precise focus during observation

FAQ

What is the focusing stroke of the J009?
90 mm, from 0 to 90 mm.
Is the 2″ interface compatible with 1.25″ eyepieces?
Yes, the 2″ interface is convertible to 1.25″ using standard adapters.
What is the fine adjustment ratio?
1:10, providing precise focus control during observation.
What material is used in the construction?
All metal, ensuring durability and resistance to thermal changes.
What is the host interface size?
M96.5×1, designed for mounting on Newtonian telescope tubes.

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