Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Valeri G. Orlov"'
Publikováno v:
Revista Mexicana de Astronomía y Astrofísica. 57:67-80
The results of speckle interferometric measurements of binary stars performed during June, 2016 with the 2.1 m telescope at the Observatorio Astronómico Nacional at SPM (México) are given. We report 480 astrometric measurements of 468 double stars
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f10c9698f5eee538ca7693a7e47ab19
https://doi.org/10.22201/ia.01851101p.2021.57.01.04
https://doi.org/10.22201/ia.01851101p.2021.57.01.04
Autor:
Fernando Angeles, Valeri G. Orlov
Publikováno v:
Journal of Astronomical Telescopes, Instruments, and Systems. 7
Here, we describe an implementation of an electron-multiplying charge-coupled device camera to search for seismological activity in white dwarfs (WD). The equipment was installed on the 2.12-m telescope at the Observatorio Astronomico Nacional San Pe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::38a3932e5175a450422db97ce258908e
https://doi.org/10.1117/1.jatis.7.3.038004
https://doi.org/10.1117/1.jatis.7.3.038004
Publikováno v:
Revista Mexicana de Astronomía y Astrofísica. 55:351-361
This paper presents the conceptual design for a new method for the suppression of OH emission lines at near-infrared (NIR) wavelengths by actively adjusting the aperiodic fiber optic Bragg gratings tension. First, we prepared an experimental study in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c62aa57dd20d9b49cc2e9dc084d1ab14
https://doi.org/10.22201/ia.01851101p.2019.55.02.19
https://doi.org/10.22201/ia.01851101p.2019.55.02.19
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 475:1725-1735
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e520138b6dafc93ab240e558361dcc43
https://doi.org/10.1093/mnras/stx3173
https://doi.org/10.1093/mnras/stx3173
Publikováno v:
Journal of Turbulence. 18:560-568
Karhunen–Loeve functions for the case of non-Kolmogorov turbulence are calculated. The calculations are performed using the covariance matrix of Zernike coefficients which is derived in analytical form. It is shown that the Karhunen–Loeve expansi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f784f027854f8471510ec6412d956dc7
https://doi.org/10.1080/14685248.2017.1310383
https://doi.org/10.1080/14685248.2017.1310383
Autor:
Valeri G. Orlov, Alonso Luna
Publikováno v:
The Astronomical Journal. 160:9
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4fc68aac460901d70df29b5a129c8c0c
https://doi.org/10.3847/1538-3881/ab9120
https://doi.org/10.3847/1538-3881/ab9120
Publikováno v:
Observatory Operations: Strategies, Processes, and Systems VII.
A fast photometry methodology is described. We use a cooled Ixon Ultra emCCD in photon counter mode to acquire data. A dissipation system is added to stabilize the temperature down to -96 C. The sensibility of this system makes it ideal even for smal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c25a08af17ba1fec405b50d8879c078
https://doi.org/10.1117/12.2311727
https://doi.org/10.1117/12.2311727
The observations of solar photosphere from the ground encounter significant problems due to the presence of Earth's turbulent atmosphere. Prior to applying image reconstruction techniques, the frames obtained in most favorable atmospheric conditions
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::08a6419610605fdeb02b42f41c29a6a7
http://arxiv.org/abs/1709.09458
http://arxiv.org/abs/1709.09458
The impulsive noise in astronomical images originates from various sources. It develops as a result of thermal generation in pixels, collision of cosmic rays with image sensor or may be induced by high readout voltage in Electron Multiplying CCD (EMC
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2ccbc0f579a361668d3a464fae3007b9
Publikováno v:
Astronomy & Astrophysics. 444:635-641
We propose a method allowing for a simulation of cross-correlated turbulence-induced phase fluctuations produced by many stars is proposed. It turns out that for weak-turbulence conditions which are important for many applications, it is possible to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c388e8e65694c545204fd7d88c7f828b
https://doi.org/10.1051/0004-6361:20052636
https://doi.org/10.1051/0004-6361:20052636