INTES-MICRO TELESCOPES

Alter M806

Clear Aperture : 203mm Focal ratio : f6 Focal length : 1218mm�30mm Back focus : 60mm Photographic field of View : 2� Optical quality for wave length (lambda) : 0.63 mkm (P-V) : 1/6th wave or better CKO (RMS) : 0.041 Central obstruction : 44% Focusing : adjustment of the main mirror body parts : Aluminium primary and secondary mirrors : LK7, LK5 (Pyrex) with reflective Aluminium coating and SiO2 protected Tube (length, diameter) : 535mm, 254mm Tube weight : 9kg