M68 EXTENSION TUBE - 15mm William Optics 25″ Super Plossl 10mm (190x)

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

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

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 large rack and pinion 3" focuser can be rotated 360° to perfectly frame the subject and has a reduction gear of 10:1 for precise focusing

M68 EXTENSION TUBE - 15mm William Optics 25″ Super Plossl 10mm (190x)This 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