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The effect of night sky background effect is negligible with respect to star power.(a) True(b) FalseThe question was asked in an online quiz.The origin of the question is Stellar Sensor Design topic in division Celestial Navigation, Doppler and Altimeter Radars of Avionics

Answer»

Correct choice is (a) True

The EXPLANATION: The night SKY radiance is so low that its effect may be ignored in COMPARISON with star POWER. The day light sky, however, is extremely BRIGHT in comparison with a star. Typically, the sea level sky radiance, 45° from the sun on a clear day is about 2000ft-lamberts.



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