Lunt 2" Rack & Pinion Focuser

Lunt Solar Systems’ 2" Rack & Pinion Focuser is a precision-engineered dual-speed focuser designed to deliver smooth, accurate, and repeatable focus control for both visual observation and high-resolution solar imaging. The focuser features a standard 2” drawtube with approximately 55–60mm of total travel, offering a fine 10:1 reduction ratio for effortless micro-adjustments—ideal for capturing sharp detail at high magnifications or with sensitive imaging setups. Built with robust materials and tight mechanical tolerances, it provides exceptional stability and a secure hold, even under heavy accessory loads of up to 3 kilograms (about 6.5 pounds).

This focuser comes standard on most Lunt Modular Telescopes (MT Series) including the 60MT, 80MT, and 100MT models. The 2" compression ring accepts both 2" and 1.25" accessories (adapter included) and attaches directly to the rear adapter plate using M68 or M90 threads, depending on the telescope’s aperture class. For users who prefer automated focusing, the Lunt 2" Rack & Pinion is fully compatible with ZWO EAF and Optec FocusLynx/ThirdLynx motor focus systems, making it a versatile and reliable choice for serious observers and astrophotographers alike.

Specifications and Details:

• Type: Precision-machined dual-speed Rack & Pinion focuser
• Size: 2” drawtube (standard telescope accessory size)
• Reduction: 10:1 dual-speed fine focus control for imaging and high-power visual work
• Travel: Approximately 55–60mm of total drawtube travel (depending on model and telescope)
• Mounting Thread: Directly compatible with Lunt Modular Telescope (MT) series — attaches to the rear adapter plate via M68 or M90 thread interface (varies by aperture class)
• Compatibility: Supplied as standard on most Lunt MT telescopes (60MT, 80MT, 100MT)
• Eyepiece Side: Standard 2” compression ring with 1.25” adapter included
• Load Capacity: Supports up to 2.5–3.0 kg (5–6.5 lbs) — adequate for large CCD/CMOS cameras and filter wheels
  Optional Motor Focusers: Compatible with ZWO EAF and Optec FocusLynx/ThirdLynx systems (Lunt provides compatibility links for both)