1.25-inch Double Focusing Base M42 for Astronomical Telescopes

Product Description:

This is an excellent 1.25-inch double-threaded focusing base with a 10mm adjustment stroke. It is lightweight and compact, made of all metal, and is strong and durable. During the focusing process, the CDD eyepiece or zenith mirror inserted does not rotate and only moves linearly, which is beneficial to observation and astronomical photography. The meticulous manufacturing process makes the micro-focusing extremely precise, and it remains smooth and smooth even at huge magnifications.

Technical Parameters:

1. Brand new double helix focuser
2. High-precision double helix focuser for guide mirror/finder mirror interface
3. Solutions to the slow focusing of telescopes or telephoto lenses
4. Made of all metal, durable

Inside diameter 1.25″

Stroke 10mm

Adjustment accuracy 0.05mm

Top external thread M42x0.75

Bottom external thread M42*0.75

Bottom inner ring external thread M31X0.5

Minimum height 46mm

Maximum height 56mm