ZWO 60280 Guidescope is a 60mm refractor with fully multi-coated optics, a focal length of 280mm (f/4.6) makes it compatible with scopes up to 1400mm focal length.
Sturdy CNC machine Aluminium construction with a 1.25″ helical focuser with 30mm of travel. It comes complete with two adjustable mounting rings and a dovetail bar for easy mounting.
By adding a T-Ring (that suits your camera brand) it can be mounted to a DSLR camera as a 280mm telephoto lens.
Could even be used as a Finderscope by adding a 12mm Illuminated Plossl eyepiece (sold separately).
Suits all ZWO cameras. At 640 grams it is one of the lightest guiding options.