Archive for the 'observation' tag

Doppler Effect

The classic example is the change in tone of the...
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Declination

The angle north or south of the celestial equator...
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Dark Adapted

This is what every astronomer’s eyes should...
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Culmination

The maximum altitude of a celestial body above...
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Counter Glow

The English name for Gegenschein. It is a faint...
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