卡士格冉焦点 Cassegrain focus

卡士格冉镜 Cassegrainian mirror

冉女士 Nicole Ran

加士格冉 Gassegrain

冉士登目镜 Ramsden eyepiece

加士格冉副镜 secondary Gassegrain mirror

冉士登盘 Ramsden disc

卡士格冉望远镜 Cassegrain-Schmidt telescope

近场卡士格冉天线 near field Cassegrainian antenna

卡士格冉 Cassegrain-Schmidt system