Transmission curves and effective refraction indices of MKO near infrared consortium filters at cryogenic temperatures

被引:13
作者
Ghinassi, F
Licandro, J
Oliva, E
Baffa, C
Checcucci, A
Comoretto, G
Gennari, S
Marcucci, G
机构
[1] Osserv Astrofis Arcetri, I-50125 Florence, Italy
[2] Ctr Galileo Galilei, S Cruz De La Palma 38700, Spain
[3] Telescopio Nazl Galileo, S Cruz De La Palma 38700, Spain
[4] Univ Florence, Dipartimento Astron, I-50125 Florence, Italy
关键词
instrumentation : miscellaneous; instrumentation : spectrographs; infrared : general;
D O I
10.1051/0004-6361:20020266
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We report transmission measurements at cryogenic temperatures for 4 broad-band filters of the Mauna Kea Observatories (MKO) near-infrared filter set and 5 narrow-band filters. The spectral scans were collected using the multi-mode IR instrument of the TNG telescope (NICS) in which these filters are permanently mounted and commonly used for astronomical observations. We determined the transmission curves at a temperature of 78 K and found no significant red-leak up to 2.6 mum, the data are available in electronic form on the TNG web page. We also estimated the variation of the wavelength response with the incidence angle and found it compatible with an effective refractive index of similar or equal to2 (see Eq. (1)).
引用
收藏
页码:1157 / 1159
页数:3
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