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http://dx.doi.org/10.5467/JKESS.2009.30.3.344

Astronomical Observation Environment Study focusing on Night Sky Brightness Variation under Light Pollution  

Lee, Jin-Hee (Department of Earth Science Education, Seooul National University)
Choe, Seung-Urn (Department of Earth Science Education, Seooul National University)
Jung, Jae-Hoon (Department of Earth Science Education, Seooul National University)
Woo, Hong-Gyun (Department of Earth Science Education, Seooul National University)
Publication Information
Journal of the Korean earth science society / v.30, no.3, 2009 , pp. 344-353 More about this Journal
Abstract
By measuring the brightness of night sky, we have investigated light pollution around the observatory in the College of Education, Seoul National University. As a result of measuring the extinction coefficient and photometric constants by standardization, in January 28, 2009, the extinction coefficient found to be $k_B$=0.359 and photometric constant was $C_B$=4.397. In March 27, 2009, extinction coefficients were $k_B$=0.896 and $k_V$=0.725, and photometric constants were $C_B$=6.235 and $C_V$=6.027. Brightness of the night sky was measured from east, west, south, and north each by altitude of $20^{\circ}$, $40^{\circ}$, $60^{\circ}$, $75^{\circ}$ and $90^{\circ}$. Data reduction and analysis was based on IRAF. Seeings for the each day of observation were 5.1 and 5.7 arcseconds in January 28 and March 27, respectively. Night sky spanned the magnitude range of $16{\leq}m_V$, $m_B{\leq}18$ We found that the brightness of night sky located at downtown was twice to four times brighter. On these observational conditions, limiting magnitude within 40cm-telescope becomes 11-13 magnitudes. Compared with Jan 28 and Mar 27, night sky brightness of January is 1 magnitude fainter than that of March in B filter.
Keywords
light pollution; brightness of night sky; limiting magnitude;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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