Suitable for NEQ/3; NEQ/5; EQ/300; EQ/500; HEQ/5; EQ/6; Cele stron mounts; Vi xen mounts and many others
Drillings at both ends; 2x 1/4 inch tripod thread in the middle
"Alstar 33cm mounting rail for EQ-4/5/6 mounts - GP prism rail for telescopes - easy installation for your telescope OTA If you need to put your telescope onto a mount or onto system with a GP profile, then this is reliably and quickly accomplished with seconds using the Alstar prism rail as a base. Whether telescope, spotting scope or camera equipment - this universal prism rail lets you attach virtually any instrument onto your mount. All you have to do is attach the rail to the OTA or tube-r
Extremly flexible through 9 countersunk bores: three M6 bores at 38 mm distance square on both sides; one in the middle with two drilled but not threaded to accommodate screws up to 6 mm in diameter center to center screw hole spacing is from 35 to 63 mm
Dimensions: 87 mm x 87 mm approx; 116 mm with screw; 9 bores allow connecting to almost all surfaces