M68 EXTENSION TUBE - 15mm William Optics the Delta Rho 350 is

the Delta Rho 350 is the capable of capturing the most stunning astrophotographs possible

The PE grade series is designed for professional research studies and applications in which precision homogeneity and on-band transmittance values across the substrate surface are required

The Prima Luce Lab Losmandy dovetail for 9

This model works as a tube extension with an optical thickness of 47mm (without the barrel)

M68 EXTENSION TUBE - 15mm William Optics the Delta Rho 350 isThis 15mm M68 extension tube features a male M68 x 1 thread on one end and a female M68 x 1 thread on the other. This is a very useful accessory for making up the exact backfocus distance required by correctors. Specifications Connection side A Male M68 x 1 Connection side B Female M68 x 1 Optical length 15 mm SKU AX M68 EXT15