1. ventilation grooves. (Adapted from Addis, E. C., Proc. SPIE, 389, 36,1983.)
2. Mounting lenses with edge-contacted adjacent surfaces. (Adapted from Price, W. H. Proc.
3. telescope housing is shown. (From Yoder, P. R., Jr. Proc. SPIE, 389, 2,1983.)
4. inches. (From Yoder, P. R., Jr., Proc. SPIE, 389, 2,1983.)