A large symmetrical triplet lens collimates the 100 arcsecond telescope guiding field onto an Apogee Alta u47 broadband CCD which is a 1024 x 1024 array of 13 m square pixels (5pixels/arcsec) The reflected light of the pinhole plate will be used for guiding. Some cases we will be able to get a guide star within 100arcsec field.
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