Extraterrestrial Skies - A Note On Calculating Apparent Magnitudes

A Note On Calculating Apparent Magnitudes

The brightness of an object varies as the inverse square of the distance. The apparent magnitude scale varies as −2.5 times the (base-10) logarithm of the brightness. Thus if an object has apparent magnitude at distance from the observer, then all other things being equal, it will have magnitude at distance .

Read more about this topic:  Extraterrestrial Skies

Famous quotes containing the words note, calculating and/or apparent:

    Alexander Woollcott broadcasts the story of the wife who returned a dog to the Seeing Eye with this note attached: “I am sending the dog back. My husband used to depend on me. Now he is independent, and I never know where he is.”
    —For the State of New Jersey, U.S. public relief program (1935-1943)

    [The] elderly and timid single gentleman in Paris ... never drove down the Champs Elysees without expecting an accident, and commonly witnessing one; or found himself in the neighborhood of an official without calculating the chances of a bomb. So long as the rates of progress held good, these bombs would double in force and number every ten years.
    Henry Brooks Adams (1838–1918)

    Has the art of politics no apparent utility? Does it appear to be unqualifiedly ratty, raffish, sordid, obscene, and low down, and its salient virtuosi a gang of unmitigated scoundrels? Then let us not forget its high capacity to soothe and tickle the midriff, its incomparable services as a maker of entertainment.
    —H.L. (Henry Lewis)