A dual-wave atmosphere transparency radiometer of the millimeter wave range

Nosov, V. I.; Bol’shakov, Oleg; Bubnov, G. M.; Vdovin, V. F.; Зинченко, И. И.; Marukhno, A. S.; Nikiforov, P. L.; Fedoseev, L. I.; Швецов, А. А.

doi:10.1134/s0020441216020111

Cited by 22 publications

(8 citation statements)

References 3 publications

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“…To monitor the transparency of the atmosphere, the MIAP-2 device (a two-channel microwave atmospheric absorption meter) was used, [14], Figure 2. In detail, the methodology for processing measured data is given in the publication [15].…”

Section: Astroclimate Conditions At the Bta Site Of The Sao Rasmentioning

confidence: 99%

Microwave Receiving System Based on Cryogenic Sensors for the Optical Big Telescope Alt-Azimuth

Balega,

Bubnov,

Chekushkin

et al. 2023

Preprint

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The article presents the results of evaluating the possibility of conducting radio astronomy studies in the windows of atmospheric transparency ~100, ~230 and ~350 GHz using the optical Big Telescope Alt-Azimuthal (BTA) of the SAO RAS. A list of some promising astronomical tasks is proposed. The astroclimat conditions at the BTA site and possible optical, cryogenic and mechanical interfaces for mounting a superconducting radio receiver at the focus of the optical telescope are considered. As a receiving system, arrays of detectors cooled to ~0.3 K based on the Superconductor – Insulator – Normal metal – Insulator – Superconductor (SINIS) structure are proposed. The implementation of the project will make it possible to use the BTA site of the SAO RAS not only to solve some astronomical problems (it is possible to consider the implementation of a single observatory, the VLBI mode in the Suffa, EHT and Millimetron projects), but will also be used to test various cryogenic detectors in a real observatory.

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Section: Astroclimate Conditions At the Bta Site Of The Sao Rasmentioning

confidence: 99%

Microwave Receiving System Based on Cryogenic Sensors for the Optical Big Telescope Alt-Azimuth

Balega,

Bubnov,

Chekushkin

et al. 2023

Preprint

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“…MIAP-2 (a two-channel microwave atmospheric ab- sorption meter) was developed at the IAP RAS and CJSC GYCOM, a scientific and production enterprise, on request of the R. E. Alekseev State Technical University of Nizhny Novgorod. This device measures the optical depths by the method of atmospheric cuts in transparency windows in the 2-and 3-mm wavelength ranges in automatic mode [90]. The technique and equipment are continuously upgraded [91,92].…”

Section: Topical Problems Of Sub-terahertz Astronomy Observation and Equipment Problemsmentioning

confidence: 99%

Superconducting Receivers for Space, Balloon, and Ground-Based Sub-Terahertz Radio Telescopes

Balega

Baryshev

Bubnov

et al. 2020

Radiophys Quantum El

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We give a review of both our own original scientific results of the development of superconducting receivers for sub-terahertz astronomy and the main leading concepts of the global instrumentation. The analysis of current astronomical problems, the results of microwave astroclimate research, and the development of equipment for sub-terahertz radio astronomy studies justify the need and feasibility of a major infrastructure project in Russia to create a sub-terahertz telescope, as well as to enhance the implementation of the ongoing Millimetron and Suffa projects. The following results are discussed: i) superconducting coherent receivers and broadband subterahertz detectors for space, balloon, and ground-based radio telescopes have been developed and tested; ii) ultrasensitive receiving systems based on tunnel structures such as superconductorinsulator -superconductor (SIS) and superconductor -insulator -normal metal -insulatorsuperconductor (SINIS) have been created, fabricated, and examined; iii) a receiving array based on SINIS detectors and microwave readout system for such structures has been implemented; iv) methods for manufacturing high-quality tunnel structures Nb/AlO x /Nb and Nb/AlN/NbN based on niobium films with a current density of up to 30 kA/cm 2 have been developed. Receivers operated at 200 to 950 GHz and having a noise temperature only a factor of 2 to 5 higher than the quantum limit have been created and tested.

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“…The investigations have begun in June 2018 and are still ongoing. We use the dual-wave radiometric system operating by atmospheric-dip method to estimate an optical depth in 2mm and 3mm atmospheric windows [1]. It has been installed on the polar station of Polar Geophysical Institute near Barentsburg town, Svalbard.…”

Section: Expedition and Equipmentmentioning

confidence: 99%

“…Current Svalbard measurements are not promising, but the fullyear result remains to be seen. Knowing the Optical depth, it is easy to calculate the PWV (mm) [1,4]. The PWV values obtained below (Fig.5) includes a condensed water as well as water vapor by MIAP-2, but not for measurements in [5].…”

Section: Optical Depth and Pwvmentioning

confidence: 99%