[ Bosma 80-900 product photo ]
BOSMA Bosma prospective challenger 80/900 refraction Apochromatic telescopes * Quasi-optical system Apochromatic * 2 "no teeth Focus base * Support for full-135 camera * 2 ", -1.25" Ring With clamp Aluminum tripod equatorial mount reprovision Series Description: ● semi-professional optical lens Apochromatic design ● 2 "Block ● no teeth to support full-focus camera 135 ● 2" -1.25 "Ring