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On the Effectiveness of Observations in the Mid-Infrared Wavelength Range on the 2.5-Meter Telescope of the Caucasus Mountain Observatory of Moscow State University with Commercial IR Camerasстатья
- Авторы: Zheltoukhov S.G., Tatarnikov A.M.
- Журнал: Moscow University Physics Bulletin
- Том: 77
- Номер: 6
- Год издания: 2022
- Издательство: Allerton Press
- Местоположение издательства: New York, N.Y., United States
- Первая страница: 886
- Последняя страница: 895
- DOI: 10.3103/S0027134922060133
- Аннотация: The main factors that influence the success of observations in the infrared range (centralwavelengths of the photometric bands at 3.75 and 4.8 μm) on the multipurpose optical telescope are con-sidered. Estimates of the sky background brightness are obtained for the Caucasus Mountain Observatory(CMO) of Moscow State University: 1.3e6 photons/(s pixel) in the 3.75 μm band and 3.4e6 photons/(s pixel) in the 4.8 μm; and the instrumental background for the 2.5-m CMO telescope at 0◦С: 3.2e6 photons/(s pixel) in the 3.75 μm band and 4.3e6 photons/(s pixel) in the 4.8 μm band. It is shown that at this background signal level with the currently available commercial cameras in the 3–5 μm spectral range, the telescope–camera coupling capabilities for observing faint objects will still be limited by the thermal background. For different observational conditions, estimates of the limiting magnitudes of objects available for observations in the 3.75 and 4.8 μm ranges are obtained. For average observation conditions (instrument temperature of 0◦C and stellar image size of 1"), the limit is ∼10.6m and ∼8.4m, respectively.The full-text view-only version of the paper - https://rdcu.be/c5I6z
- Добавил в систему: Татарников Андрей Михайлович