J010 Focusing Seat Double Speed Gear Rotation for Astronomy

Key Benefits

• 90mm focusing stroke covers a wide range of optical configurations and eyepiece lengths
• 1:10 fine adjustment ratio enables precise focus tuning for high-magnification planetary and lunar viewing
• 2-inch eyepiece interface with 1.25-inch conversion allows compatibility with standard eyepieces
• 74mm dovetail host interface ensures secure mounting on standard telescope mounting rails
• All-metal construction resists wear and maintains alignment over time

Application Scenarios

• Adjusting focus on a refractor telescope during planetary observation with high-power eyepieces
• Fine-tuning focus on a Newtonian reflector when using long focal length eyepieces
• Converting between 2-inch and 1.25-inch eyepieces without changing the focuser
• Mounting on a telescope with a 74mm dovetail rail for stable, repeatable positioning
• Performing long-exposure astrophotography where focus stability is critical

Who It Is For

• Amateur astronomers using refractors, reflectors or compound telescopes
• Astrophotographers requiring stable and precise focus control
• Observatories and astronomy clubs maintaining shared telescope equipment
• Educational institutions running observational astronomy programs
• Retailers and distributors supplying telescope accessories to end users

Problems It Solves

• A fixed or single-speed focuser makes it difficult to achieve precise focus at high magnifications
• Incompatible interfaces between focuser and telescope rail cause misalignment or slippage
• Plastic or low-grade metal focusers wear out quickly under repeated use
• Lack of 1:10 fine adjustment prevents accurate focus during planetary imaging
• No conversion option between 2-inch and 1.25-inch eyepieces forces multiple accessory purchases

Technical Features

• Double-speed gear rotation with 1:10 fine adjustment for precise focus control
• Manual focusing method with smooth gear-driven motion
• Focusing stroke of 0 to 90mm for wide adjustment range
• 2-inch eyepiece interface with 1.25-inch adapter compatibility
• 74mm dovetail host interface for secure mounting on standard telescope rails
• All-metal construction for long-term durability and thermal stability

Specifications

Specifications are taken from the AMADA product data for this item. Confirm critical dimensions with us in writing before ordering.

Customization Options

• Available with or without 1.25-inch adapter for the eyepiece interface
• Can be supplied with alternative dovetail sizes upon request (specify when quoting)
• Surface finish options available (standard black oxide or polished)

Comparison With Other Options

Use Guide

• Ensure the dovetail rail on the telescope is clean and free of debris before mounting
• Attach the focuser to the 74mm dovetail rail and secure with the locking screw
• Insert the 2-inch eyepiece or use the 1.25-inch adapter as needed
• Use the coarse gear for large focus adjustments, then switch to fine adjustment for precision
• Check for smooth rotation and no binding before use; re-tighten if the focuser slips