1-m collimator for ISRO
AMOS designed, manufactured, assembled, and aligned an integrated collimator for ISRO/SAC in India. The collimator is a F/15 folded Cassegrain combination with a 1m diameter fast parabolic primary mirror, and a fast hyperbolic secondary mirror. Each mirror is specified to present lambda/60 rms surface accuracy, and the MTF specification for the integrated collimator is highly demanding in terms of alignment as well. Moreover, the mechanical structure and mirrors cells are designed to withstand gravity effects and a thermal variation of 10°C without loss of optical performance.