Optical collimation service for Schmidt-Cassegrain telescopes consists of adjustment through the three screws placed on the secondary mirror bracket. Furthermore, it consists of checking and geometrical aligning of the secondary mirror bracket (as allowed by the flattener-glass radial shift). Detergent cleaning of the external aplanatic lens.
Optical collimation service for Newtonian telescopes consists of adjustment of primary and secondary mirrors as well as getting correct placement of the secondary mirror according to the focuser axis. Cleaning both mirror surfaces with lens detergent costs extra 20.00 €.