Tag Archives: brightness

Quality of seeing

Resolution: There is a problem of interference given the wave nature of light. It is analogous to the interference pattern caused by a single slit. f = focal length D = width of the slit m = positive integer. 1, … Continue reading

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Magnitude

Apparent magnitude (m): Apparent “brightness” of a star, as seen from Earth. Hipparcus first measured it, using a scale from 1 (brightest) to 6 (dimmest). Note that smaller values correspond to brighter starts! This scale was adopted and extended in … Continue reading

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