K006 2 Inch Fine Adjustment Seat for Astronomical Telescope

Key Benefits

• 0.05mm focusing accuracy allows fine adjustments for precise star alignment
• Double helical mechanism reduces backlash and ensures smooth, repeatable focusing
• 10mm focusing stroke provides sufficient range for critical focus tuning
• Full metal construction ensures durability under repeated use and variable temperatures
• Includes M31 to 2 inch adapter, so the focuser works with both 1.25 inch and 2 inch optical systems
• Compact design fits in tight telescope configurations without adding bulk

Application Scenarios

• Fine focusing of a guide scope during long exposure astrophotography
• Adjusting focus on a finder scope to match the main telescope's alignment
• Mounting a camera or imaging sensor on a 2 inch port using the M31 to 2 inch adapter
• Repositioning a guide scope on a telescope with a 1.25 inch focuser using the 2 inch interface
• Field use where consistent focus repeatability is required across multiple sessions

Who It Is For

• Amateur astronomers doing astrophotography with guide scopes
• Telescope users upgrading from 1.25 inch to 2 inch accessories
• Users of refractors, reflectors and compound telescopes needing precise focus control
• Field technicians adjusting focus on portable or mobile telescope setups
• Educational astronomy labs requiring repeatable focus performance

Problems It Solves

• Sluggish or inconsistent focus on telescopes with low-precision focusers
• Incompatibility between 1.25 inch and 2 inch optical systems without an adapter
• Backlash in focus movement causing image drift during long exposures
• Lack of fine adjustment control when aligning guide scopes or imaging sensors
• Poor durability in plastic or low-grade focusers that wear out under repeated use

Technical Features

• Double helical focuser design for high precision and low backlash
• Focusing stroke of 10mm for extended focus range
• 0.05mm accuracy per adjustment step
• 1.25 inch interface with M42*0.75 male thread for guide scopes
• M31x0.5 male thread for primary mirror connection
• 2 inch interface with M48x0.75 female thread via included adapter
• Minimum length: 43mm, maximum length: 53mm
• Full metal construction for rigidity and long-term stability
• Black anodized finish for corrosion resistance and reduced light scatter

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 the M31 to 2 inch adapter
• Thread size options available upon request (M31x0.5, M42x0.75, M48x0.75)
• Finish options: black anodized or bare metal (if required)
• Custom packaging for bulk orders or OEM branding

Comparison With Other Options

Use Guide

• Ensure the M31x0.5 thread on the primary mirror is clean and undamaged before mounting
• Attach the M31 to 2 inch adapter to the focuser before connecting to a 2 inch system
• Adjust the focuser slowly to avoid overshooting focus, especially during critical alignment
• Use the 10mm stroke to fine-tune focus over multiple sessions; record positions if needed
• Clean threads periodically with a dry brush to prevent dust or debris from affecting focus