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2-inch M48 Double Fine-tuning Focusing Base for Astronomical Telescope

2-inch M48 Double Fine-tuning Focusing Base for Astronomical Telescope

The 2-inch M48 double fine-tuning focusing base is designed for astrophotography and precision focusing in refracting, Newtonian reflecting, and Schkar astronomical telescopes. It features a 39mm focusing travel with 0.1mm accuracy and M48 external threads for direct camera attachment. The spiral design ensures smooth, continuous focusing motion.

  • 39 mm focusing travel enables precise focus adjustment for astrophotography and long-exposure imaging
  • 0.1 mm focus accuracy supports critical alignment in high-resolution astronomical imaging
  • M48 external threads allow direct connection to camera bodies without additional adapters
  • Spiral focusing mechanism delivers smooth, continuous motion without backlash or jerking
  • Compatible with any 2-inch focus mount, ensuring integration across multiple telescope models
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Technical features

  • 2-inch spiral focus mount designed for astrophotography and high-precision focusing
  • Focusing travel: 39 mm with 0.1 mm focus accuracy
  • M48 external threads for direct camera or accessory connection
  • Spiral focusing mechanism ensures smooth, continuous motion without jerking
  • Compatible with refracting, Newtonian reflecting, and Schkar astronomical telescopes
  • Suits any 2-inch focus mount interface
  • Designed for use with 2-inch eyepiece or camera adapters

Who it is for

  • Amateur and professional astronomers conducting astrophotography
  • Telescope assemblers and integrators building custom imaging systems
  • Distributors sourcing precision focusing components for astronomical accessories

Specifications

Model2-inch M48 Double Fine-tuning Focusing Base
Focusing Travel39 mm
Focus AccuracyApproximately 0.1 mm
Thread SizeM48 external
Mount Size2-inch
Focusing MechanismSpiral
CompatibilityRefracting, Newtonian, Schkar telescopes; any 2-inch focus mount

Use guide

  • Install the focusing base onto the telescope's 2-inch focus mount interface
  • Attach the camera or imaging device directly to the M48 threaded end
  • Use the spiral knob to adjust focus smoothly across the 39 mm travel range
  • Ensure the camera is securely fastened to prevent misalignment during long exposures

FAQ

What is the focus accuracy of this base?
Approximately 0.1 mm, suitable for precise astrophotography adjustments.
Can I connect a camera directly to this base?
Yes. The M48 external thread allows direct attachment of a camera or imaging device.
Is this compatible with all 2-inch focus mounts?
Yes. It fits any standard 2-inch focus mount interface.
What telescopes is this suitable for?
Refracting, Newtonian reflecting, and Schkar astronomical telescopes.
How much focusing travel does it provide?
39 mm of continuous focusing travel for fine adjustment across different focal lengths.

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