Astronomy Specialist

M68 EXTENSION RING 15mm

$99.00

Quantity
- +

 

This 15mm extension ring is often used for professional field flatteners such as the SharpStar 2.5" field flattener.

The extension ring has an M68 x 1 male thread on one side and an M68 x 1 female thread on the other side. The total thickness is 19mm which includes the 4mm male thread.


 

Thread

M68 x 1

Optical thickness

15 mm (male thread not taken into account)

Length of the male thread

4 mm

Clear aperture

63 mm

 

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