A new method for aerosol measurement using wide-field photometry

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F21%3A00550874" target="_blank" >RIV/68378271:_____/21:00550874 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985815:_____/21:00550874 RIV/00216208:11320/21:10438316

Výsledek na webu

<a href="http://hdl.handle.net/11104/0326188" target="_blank" >http://hdl.handle.net/11104/0326188</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3847/1538-3881/abf7b1" target="_blank" >10.3847/1538-3881/abf7b1</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A new method for aerosol measurement using wide-field photometry

Popis výsledku v původním jazyce

We present a new method to measure the vertical aerosol optical depth (VAOD) during clear nights using a wide-field imager-a CCD camera with a photographic lens on an equatorial mount. A series of 30 s exposures taken at different altitudes above the horizon can be used to measure the VAOD with a precision better than 0.008 optical depths within a few minutes. Such a measurement does not produce any light and is thus suitable for use at sites where other astronomical instruments are located. The precision of the VAOD measurement depends on the laboratory calibration of spectral properties of the system and of the response of the camera electronics to varying illumination levels, as well as careful considerations of the details of stellar photometry and modeling of the dependence of the measured stellar flux, the star color, and the position within the field of view. The results obtained with robotic setups at the future sites of the Cerenkov Telescope Array show good internal consistency and agreement with simultaneous measurements from a Sun/Moon photometer located at the same sites.

Název v anglickém jazyce

A new method for aerosol measurement using wide-field photometry

Popis výsledku anglicky

We present a new method to measure the vertical aerosol optical depth (VAOD) during clear nights using a wide-field imager-a CCD camera with a photographic lens on an equatorial mount. A series of 30 s exposures taken at different altitudes above the horizon can be used to measure the VAOD with a precision better than 0.008 optical depths within a few minutes. Such a measurement does not produce any light and is thus suitable for use at sites where other astronomical instruments are located. The precision of the VAOD measurement depends on the laboratory calibration of spectral properties of the system and of the response of the camera electronics to varying illumination levels, as well as careful considerations of the details of stellar photometry and modeling of the dependence of the measured stellar flux, the star color, and the position within the field of view. The results obtained with robotic setups at the future sites of the Cerenkov Telescope Array show good internal consistency and agreement with simultaneous measurements from a Sun/Moon photometer located at the same sites.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Astronomical Journal

ISSN

0004-6256

e-ISSN

1538-3881

Svazek periodika

162

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

15

Strana od-do

6

Kód UT WoS článku

000658869200001

EID výsledku v databázi Scopus

2-s2.0-85108452856