ESTIMATING SEEING VALUES FROM VARIOUS REFRACTIVE INDEX STRUCTURE PARAMETER MODELS AT MAUNA KEA, HAWAII
Astronomical observations require high precision to produce clear and accurate images. For some wavelength ranges, such as radio and visible light, observations can avoid atmospheric contamination, but this does not mean they are without other disturbances. These disturbances arise due to atmosph...
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| 主要作者: | |
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| 格式: | Final Project |
| 語言: | Indonesia |
| 主題: | |
| 在線閱讀: | https://digilib.itb.ac.id/gdl/view/82302 |
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| 機構: | Institut Teknologi Bandung |
| 語言: | Indonesia |
| 總結: | Astronomical observations require high precision to produce clear and accurate
images. For some wavelength ranges, such as radio and visible light,
observations can avoid atmospheric contamination, but this does not mean
they are without other disturbances. These disturbances arise due to atmospheric
turbulence, known as ”seeing,” which causes changes in the positions of
celestial objects. This e?ect results in astronomical images becoming blurred
or scintillating, reducing the sharpness and clarity of the recorded images. This
study aims to find a correlation between atmospheric parameters from ERA5
reanalysis data and observed seeing values. Through an in-depth understanding
of the relationship between atmospheric conditions and seeing quality,
this research is expected to make significant contributions in identifying and
recommending the best locations for astronomical observatories. The results
show that the distribution of FWHM seeing values obtained closely aligns
with the observed seeing values for the Mauna Kea Observatory area. These
findings utilize wind speed data at various altitudes, ranging from 110.9 meters
to 32.4 kilometers, which are then incorporated into the structure index
parameter function (C2n
) and Fried Parameter (r0). |
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