The Atmospheric Dispersion Corrector (ADC) consists of two counter-rotating “Direct-Vision Doublet Prisms” (DVDPs). It is placed between the instrument port and the second fold mirror in front of the telescope focus.
The Atmospheric Dispersion Corrector (ADC) consists of two counter-rotating “Direct-Vision Doublet Prisms” (DVDPs). It is placed between the instrument port and the second fold mirror in front of the telescope focus.