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Camera optics in the ultraviolet region of the Next Generation Palomar Spectrograph
Tang LF(汤丽峰); Hu ZW(胡中文); Ji HX(季杭馨)
2023-03-08
Conference NameSPIE OPTO, 2023
Source PublicationPhotonic Instrumentation Engineering X
VolumeSPIE Vol.12428
Conference Date2023.1.28--2.3
Conference PlaceSan Francisco, California, United States
Abstract

The Next Generation Palomar Spectrograph (NGPS) is a high-throughput medium-resolution broadband spectrograph  developed for the Hale telescope. It consists of four spectroscopic channels, where ultraviolet channel covers the region  [310-436] nm and delivers a resolving power about 4000 with 0.5 arcsec focal plane sampling at the center wavelength  370 nm. The spectrometer operates in the dome under wide temperature range from -10 degrees to 30 degrees, and  temperature variation is around 3 degrees per night. 
One of the goals of NGPS is to achieve excellent image quality and extremely high stability over a wide temperature  range. It is indeed a challenge due to limited selection of optical materials in the ultraviolet waveband. This article  introduces different camera concept for the ultraviolet channel of NGPS. The Schmidt reflective camera was finally  adopted after evaluation of their performance.  

KeywordSpectrograph ultraviolet region camera optics Schmidt camera
Subject Area天文技术与方法
Language英语
Document Type会议论文
Identifierhttp://ir.niaot.ac.cn/handle/114a32/2114
Collection中国科学院南京天文光学技术研究所知识成果
会议论文
Affiliation南京天文光学技术研究所
Recommended Citation
GB/T 7714
Tang LF,Hu ZW,Ji HX. Camera optics in the ultraviolet region of the Next Generation Palomar Spectrograph[C],2023.
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