Abstract:
Currently the science of astronomy for the study of origins and evolutions is greatly advancing both theoretically and observationally. However, there are a number of works for further developments. For example, the data extracted on earth is highly extinct due to stellar winds, background radiations and planetary atmospheres. So motivated by this astrophysical relevant issue we were interested to study on the effect of atmospheric extinction on astronomical photometry and spectroscopy theoretically. The standard Plancks black body radiation law was used for perfect (non-extinct) radiation. To see the effect of earth’s atmosphere we assumed an exponential atmosphere that obeys the Beer-Bouguet-Lambert law of the optical depth equation. The results are in agreement with observational works and the standard theories. However, this work is limited to high approximations.
