The Primary Mirror Center Spot for 12"/16" GSO Mirrors from JMI Telescopes is a center spot added to the parabolic primary mirror of GSO mirror sets.
Note:
This option much be added to GSO Mirror Sets at the time of purchase.
Function
Center spot for GSO Primary and Secondary Mirror sets.
GSO Mirror Sets
Both elements have been precisely designed and engineered to meet exacting specifications at the Guan Sheng Optical (GSO) factory. The primary and secondary mirrors are constructed of diffraction limited BK7 glass and feature a aluminum reflective coating and a SiO2 protective coating.