BAADER M48 EXTENSION TUBE Optical-Thickness:15mm 8 mm Diameter 2" Thickness

8 mm Diameter 2" Thickness

high precision micro-geared focuser for use with refracting telescopes

There are cutouts for safety screws on each end of the saddle

Note: as the free aperture of this adapter is smaller than the diagonal of a full-frame sensor

BAADER M48 EXTENSION TUBE Optical-Thickness:15mm 8 mm Diameter 2" ThicknessThe Baader M48 extension tubes have male M48 x 0. 75 threads on one side and female M48 x 0. 75 threads on the other. They can be useful for reaching the precise backfocus distance as required by correctors. It features a knurled ring for easy gripping and safety kerfs to stop accessories such as eyepieces slipping out. Specifications Optical length 5 to 40 mm Clear aperture 45 mm Outer diameter 53 mm Connection telescope side M48 x 0. 75 male