FRIDA Integral Field Unit Opto-mechanical Design

被引:1
|
作者
Cuevas, Salvador [1 ]
Eikenberry, Stephen S. [2 ]
Bringas, Vicente [3 ]
Corrales, Adi [3 ]
Espejo, Carlos [1 ]
Lucero, Diana [3 ]
Rodriguez, Alberto [3 ]
Sanchez, Beatriz [1 ]
Uribe, Jorge [3 ]
机构
[1] Univ Nacl Autonoma Mexico, Inst Astron, Apdo Postal 70-264, Mexico City 04510, DF, Mexico
[2] Univ Florida, Bryant Space Ctr 211, Dept Astron, Gainesville, FL 32611 USA
[3] Ctr Ingn & Desarrollo Ind, Santiago Quertaro 76130, Mexico
关键词
Infrared spectroscopy; Adaptive Optics; Integral Field Units; Image slicers; Opto-mechanical design; Optical Fabrication; Cryogenics;
D O I
10.1117/12.925504
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
FRIDA (inFRared Imager and Dissector for the Adaptive optics system of the Gran Telescopio Canarias) has been designed as a cryogenic and diffraction limited instrument that will offer broad and narrow band imaging and integral field spectroscopy (IFS). Both, the imaging mode and IFS observing modes will use the same Teledyne 2Kx2K detector. This instrument will be installed at Nasmyth B station, behind the GTC Adaptive Optics system. FRIDA will provide the IFS mode using a 30 slices Integral Field Unit (IFU). This IFU design is based on University of Florida FISICA where the mirror block arrays are diamond turned on monolithic metal blocks. FRIDA IFU is conformed mainly by 3 mirror blocks with 30 spherical mirrors each. It also has a Schwarzschild relay based on two off axis spherical mirrors and an afocal system of two parabolic off axis mirrors. Including two insertion mirrors the IFU holds 96 metal mirrors. Each block or individual mirror is attached on its own mechanical mounting. In order to study beam interferences with mechanical parts, ghosts and scattered light, an iterative optical-mechanical modeling was developed. In this work this iterative modeling is described including pictures showing actual ray tracing on the opto-mechanical components.
引用
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页数:8
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