M68 EXTENSION TUBE - 15mm William Optics An ideal equatorial mount has

An ideal equatorial mount has its right ascension axis pointed directly at the celestial poles

this leaves 77mm of backfocus for your camera and accessories when used together with the Celestron EdgeHD

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

25″ Super Plossl 10mm (190x) – apparent field of view 52°

M68 EXTENSION TUBE - 15mm William Optics An ideal equatorial mount hasThis 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