Optical design of ARIES: the new near-infrared science instrument for the adaptive f/15 Multiple Mirror Telescope

1999 ◽  
Author(s):  
Roland J. Sarlot ◽  
Donald W. McCarthy, Jr. ◽  
James H. Burge ◽  
Jian Ge
Keyword(s):  
Near Infrared ◽  
Optical Design ◽  
Science Instrument ◽  
Mirror Telescope

scholarly journals Optical Design of the Goaly3 Multi-Mirror Telescope System with a Wide Field of View

2021 ◽  
Vol 11 (3) ◽  
pp. 1200
Author(s):  
Junliu Fan ◽  
Quanying Wu ◽  
Baohua Chen ◽  
Lin Liu ◽  
Lei Chen
Keyword(s):  
Fill Factor ◽  
Optical Design ◽  
Tolerance Analysis ◽  
Field Of View ◽  
Wide Field ◽  
Aspheric Surfaces ◽  
The Monte Carlo Method ◽  
Wide Field Of View ◽  
Mirror Telescope ◽  
Telescope System

A Golay3 multi-mirror telescope (MMT) system is designed in this paper. The fill factor of the Golay3 MMT is derived from the angular resolution of the telescope. An initial configuration is established according to the paraxial optical theory. A three-element aspheric corrector group is designed and placed in the converging light cone to enlarge the field of view (FOV) of the Golay3 MMT. The tolerance analysis for each surface of the Golay3 MMT is conducted using the Monte Carlo method. The design results show the FOV of the Golay3 MMT system can be increased to 1.5° with the insertion of a three-element aspheric corrector group. The results of the tolerance analysis indicate that most tolerances are loose, while some decenter tolerances relating with the aspheric surfaces are relatively tight, but still within an acceptable range.

Highly Sensitive, Non-cryogenic NIR High-resolution Spectrograph, WINERED

2022 ◽  
Vol 134 (1031) ◽  
pp. 015004
Author(s):  
Yuji Ikeda ◽  
Sohei Kondo ◽  
Shogo Otsubo ◽  
Satoshi Hamano ◽  
Chikako Yasui ◽  
...  
Keyword(s):  
High Resolution ◽  
Near Infrared ◽  
New Technology ◽  
Optical Design ◽  
Wide Band ◽  
Integration Time ◽  
Optical Wavelength ◽  
Custom Made ◽  
Intermediate Size ◽  
Large Telescopes

Abstract WINERED is a novel near-infrared (NIR) high-resolution spectrograph (HRS) that pursues the highest possible sensitivity to realize high-precision spectroscopy in the NIR as in the optical wavelength range. WINERED covers 0.9–1.35 μm (z, Y, and J-bands) with three modes (Wide mode and two Hires modes) at the maximum spectral resolutions of R = 28,000 and R = 70,000. For fulfilling the objective, WINERED is designed with an unprecedentedly high instrument throughput (up to 50% at maximum including the quantum efficiency of the array) that is three times or more than other existing optical/NIR HRSs. This is mainly realized by a combination of non-white pupil and no fiber-fed configuration in optical design, the moderate (optimized) wavelength coverage, and the high-throughput gratings. Another prominent feature of WINERED is “warm” instrument despite for infrared (IR) observations. Such non-cryogenic (no cold stop) IR instrument finally became possible with the combination of custom-made thermal-cut filter of 10−8 class, 1.7 μm cutoff HAWAII-2RG array, and a cold baffle reducing the direct thermal radiation to the IR array into the solid angle of f/2. The thermal background is suppressed below 0.1 photons pixel−1 s−1 even in the wide band of 0.9–1.35 μm under the environment of 290 K. WINERED had been installed to the 3.58 m New Technology Telescope at La Silla Observatory, ESO, since 2017. Even with the intermediate size telescope, WINERED was confirmed to provide a limiting magnitude (for SNR = 30 with 8 hr. integration time) of J = 16.4 mag for the Wide mode and J = 15.1 mag for the Hires mode, respectively, under the natural seeing conditions. These sensitivities are comparable to those for the existing NIR-HRSs attached to the 8–10 m class telescopes with AO. WINERED type spectrographs may become a critical not only for the currently on-going extremely large telescopes to reduce the developing cost and time but also for smaller telescopes to extend their lives with long programs.

Optical design and performance of MIRIS near-infrared camera

2010 ◽  
Author(s):  
Chang Hee Ree ◽  
Sung-Joon Park ◽  
Bongkon Moon ◽  
Sang-Mok Cha ◽  
Youngsik Park ◽  
...  
Keyword(s):  
Near Infrared ◽  
Optical Design ◽  
Infrared Camera ◽  
And Performance

Concept and optical design of the near-infrared integral field unit for SWIMS

2014 ◽  
Author(s):  
Yutaro Kitagawa ◽  
Shinobu Ozaki ◽  
Kentaro Motohara ◽  
Masahiro Konishi ◽  
Hidenori Takahashi ◽  
...  
Keyword(s):  
Near Infrared ◽  
Optical Design ◽  
Field Unit ◽  
Integral Field

scholarly journals Compact and contactless reflectance confocal microscope for neurosurgery

2020 ◽  
Author(s):  
Jiahe Cui ◽  
Raphaël Turcotte ◽  
Karen M. Hampson ◽  
Matthew Wincott ◽  
Carla C. Schmidt ◽  
...  
Keyword(s):  
Near Infrared ◽  
Optical Design ◽  
Hippocampal Slices ◽  
Infrared Region ◽  
Confocal Microscope ◽  
Cellular Level ◽  
Tumour Resection ◽  
Neurosurgical Procedures ◽  
Label Free ◽  
Working Distance

AbstractVisual guidance at the cellular level during neurosurgical procedures is essential for complete tumour resection. We present a compact reflectance confocal microscope with a 20 mm working distance that provided <1.2 µm spatial resolution over a 600 µm × 600 µm field of view in the near-infrared region. A physical footprint of 200 mm × 550 mm was achieved using only standard off-the-shelf components. Theoretical performance of the optical design was first evaluated via commercial Zemax software. Then three specimens from rodents: fixed brain, frozen calvaria and live hippocampal slices, were used to experimentally assess system capability and robustness. Results show great potential for the proposed system to be translated into use as a next generation label-free and contactless neurosurgical microscope.

Optical design of near infrared fluorescence confocal laser scanning system

2015 ◽  
Vol 36 (1) ◽  
pp. 29-34
Author(s):  
Luo Gang-yin ◽  
◽  
Wang Bi-dou ◽  
Miao Peng ◽  
Wang Lei ◽  
...  
Keyword(s):  
Laser Scanning ◽  
Near Infrared ◽  
Optical Design ◽  
Confocal Laser Scanning ◽  
Confocal Laser ◽  
Scanning System ◽  
Near Infrared Fluorescence ◽  
Laser Scanning System
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