A development of the Schmidt camera which has a very wide field of view and a focal ratio as fast as f/1. This is achieved by placing a meniscus lens on either side of the corrector plate. It was designed for meteor photography.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。