M68 EXTENSION RING 8mm Bar The majority of telescope mounts

The majority of telescope mounts employ a worm drive gear system

A solid 2" Crayford focuser with a 10:1 dual-speed reduction allows precise

USB-C port for computer control

The SE grade meet the critical DayStar quality control criteria applicable in all visual and some photographic environments

2x - M4 x 10 stainless steel countersunk screws

M68 EXTENSION RING 8mm Bar The majority of telescope mountsThis 8 mm extension ring is often used for professionals filed flattener such as the SharpStar 2. 5" field flattener. This extension ring has a M68 x 1 male thread on one side and a M68 x 1 female thread on the other side. The total thickness is 12 mm and it includes the 4 mm male thread Specifications Connection (side a) M68 x 1 male Connection (side b) M68 x 1 female Optical thickness 8 mm (not including 4 mm male thread) Clear aperture 63 mm SKU