Large Objective for Night Observation

Amon, Maria Clara Igrejas; Rosin, Seymour; Jackson, B. V.

doi:10.1364/ao.10.000490

Cited by 6 publications

(7 citation statements)

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“…[1][2][3][4][5][6][7][8]. Numerical data are presented in a common format in the Tables 3 -11, the corresponding optical layouts are shown in Fig.…”

Section: Appendix Description Of Optical Systemsmentioning

confidence: 99%

“…The set of flat-field systems that we consider hereafter includes a telescope with a prime-focus corrector, a corrected Cassegrain system, a Schmidt camera, a Schmidt-Houghton telescope, a modified Richter-Slevogt telescope (Terebizh 2001), a version of the Amon, Rosin and Jackson camera (Amon et al 1971), Ω 2 and Ω 3 systems (Terebizh 2007a,b), and a lens objective to compare its efficiency with that of catadiopric systems (Fig. 1).…”

Section: Optical Layouts 21 Flat Focal Surfacementioning

confidence: 99%

“…The following is a complete description of the designs, which are included in Table 1 at Nos. [1][2][3][4][5][6][7][8]. Numerical data are presented in a common format in the Tables 3 -11, the corresponding optical layouts are shown in Fig.…”

Section: Appendix Description Of Optical Systemsmentioning

confidence: 99%

“…• angular field and flat focal surface was added for comparison 1 . To be specific, the linear diameter B of the flat field has been adopted the same for all the designs, 134.5 mm, which coincides with the length of the diagonal CCD STA 1600 of Semiconductor Technology Associates.…”

Section: Introductionmentioning

confidence: 99%

“…1). Apertures of catadioptric designs are in the range from 0.4 m up to 1.0 m. A 20-cm refractive lens with a 15 • angular field and flat focal surface was added for comparison 1 .…”

Section: Introductionmentioning

confidence: 99%

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On the Capabilities of Survey Telescopes of Moderate Size

Terebizh

2016

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To explore capabilities of moderate-size optical telescopes in surveys, the set of 9 new wide-field designs having apertures up to 1 m is considered. All but one systems have angular field of view in a range 3.5 • −10 • and flat focal surface; the field of the last system is 45 • in diameter at the 0.5 m aperture and spherical focal surface. The complete description of the optical layouts is given in the Appendix. Relations between the expected limiting magnitude, survey speed and exposure time allow to choose the system that is most suitable for a particular task of observations. In principle, a single wide-field telescope with the aperture of approximately 1 m can detect objects brighter than 22.5 m over the entire hemisphere within one night, however, the reliability of acquired data can be significantly increased by using a hierarchic observational network comprised of telescopes with optimized parameters.

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“…[1][2][3][4][5][6][7][8]. Numerical data are presented in a common format in the Tables 3 -11, the corresponding optical layouts are shown in Fig.…”

Section: Appendix Description Of Optical Systemsmentioning

confidence: 99%

Section: Optical Layouts 21 Flat Focal Surfacementioning

confidence: 99%

Section: Appendix Description Of Optical Systemsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…1). Apertures of catadioptric designs are in the range from 0.4 m up to 1.0 m. A 20-cm refractive lens with a 15 • angular field and flat focal surface was added for comparison 1 .…”

Section: Introductionmentioning

confidence: 99%

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On the Capabilities of Survey Telescopes of Moderate Size

Terebizh

2016

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A Theoretical Approach for Detecting the Chikungunya Virus Based on 1D Photonic Crystals

Kathiresan

Ramanujam²,

Poovendran³

et al. 2023

Physica Status Solidi (a)

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The Current study aims at using defective 1D photonic crystals to detect the Chikungunya virus in various healthy and diseased blood samples composed of plasma, platelets, red blood cells, and uric acid. The proposed PC structure has 14 periods and consists of repeating SiC and SiO2 layers with a central cavity layer. When blood samples are injected into the cavity layer, the transmittance spectrum is examined theoretically by using a transfer matrix approach to determine how the wavelength of the defect mode changes. The cavity layer is 540 nm and 648 nm thick, and the work has been carried out at different angles of incidence. The performance of the sensor is quantified by computing the sensitivity, figure of merit, quality factor, and limit of detection values of the sensor for various blood samples. The maximum sensitivity is 1205.5 nm/RIU and detection limits of the order is 10‐6 in this prosped work. A lower value of SR of 0.01218 is also achieved. Such a high‐performance sensor is suitable for biosensing applications with better sensing capabilities.This article is protected by copyright. All rights reserved.

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