Category: Education
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30-cm eye to the chromosphere
A new solar telescope is about to be established in the solar tower at National Astronomical Observatory Rozhen, Bulgaria (41° 41’51″; N 24° 44’19″; E, 1759 m). The telescope is currently under construction and is expected to receive its first light in 2022. The 30-cm Schmidt-Cassegrain reflector is going to be focused on chromospheric observations.…
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The ‘green flash’ phenomenon
The optical phenomenon called green flash could be observed around the moment of set or rise of the Sun, Moon and some of the brighter planets. New let’s see how our Sun can cause the effect, starting with a brief information about sunlight and the effects that the Earth’s atmosphere can cause.