scholarly journals Automatic optical path configuration variation in off-axis mirror system design

2019 ◽  
Vol 27 (11) ◽  
pp. 15251
Author(s):  
Chen Xu ◽  
Xiaomin Lai ◽  
Dewen Cheng ◽  
Yongtian Wang ◽  
Kaihua Wu
1997 ◽  
Vol 36 (1) ◽  
pp. 183 ◽  
Author(s):  
Jose M. Sasian

2010 ◽  
Author(s):  
Xiaoping Li ◽  
Zhonghua Fang ◽  
Xinglong Li
Keyword(s):  

2009 ◽  
Vol 48 (24) ◽  
pp. 4703
Author(s):  
Michael J. Kosch ◽  
Todd Pedersen ◽  
Robert Esposito

2015 ◽  
Vol 52 (1) ◽  
pp. 012202
Author(s):  
周子楠 Zhou Zinan ◽  
马军 Ma Jun ◽  
尉佩 Yu Pei ◽  
蓝岚 Lan Lan ◽  
王文生 Wang Wensheng

2008 ◽  
Vol 54 (3) ◽  
pp. 972-980 ◽  
Author(s):  
Jun-Ren Ding ◽  
Chien-Lin Huang ◽  
Jin-Kun Lin ◽  
Jar-Ferr Yang ◽  
Chung-Hsien Wu

2015 ◽  
Author(s):  
Yulan He ◽  
Xiangguo Xiao ◽  
Yuan Li ◽  
Xinzheng Shao ◽  
Nanxi Wang ◽  
...  

1978 ◽  
Vol 48 ◽  
pp. 271-278
Author(s):  
Chr. Kühne

The PZT according to MARKOWITZ, undoubtedly one of the most accurate measuring instruments, has become an integral part of astronomy in the last years. Yet there are two reasons why I still tried to improve the MARKOWITZ basic idea.For the MARKOWITZ process the use of a lens objective is imperative. Because of the diameter limitations of the lens objectives the magnitude is reduced. Although a 65 cm PZT has been put into operation in Washington recently, the thermal difficulties encountered made it necessary to control the temperature actively. In addition, the 65 cm diameter of a lens equipped with 4 elements can be considered as the very limit, but not for a mirror system.In addition there are still more disadvantages using lens objectives. The useable field is restricted by astigmatism, reducing the range of declination. The transmission, especially in the blue wavelengths, decreases very rapidly with the thickness of lenses. For large multilens objectives the transmission is less than for a mirror system.


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