INTES-MICRO TELESCOPES

Alter MH84 Deluxe

Clear Aperture : 203mm Focal ratio : f4 Focal length : 812mm � 20mm Back focus : More than 60mm Photographic field of View : 2� 55' Optical quality for wave length (lambda) : 0.63 mkm (P-V) : 1/8th wave or better CKO (RMS) : 0.03 Central obstruction : 35% 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) : 800mm, 254mm Tube weight : 13kg