Formulae. 1  Eclipsing binary: diameter = speed Ã time of eclipse. 2  Size from luminosity: star's radius/Sun's radius = (Sun's temperature/star's temperature)2 Sqrt[star's luminosity/Sun's luminosity].
MOA is a mathmatical concept that most firearm scopes incorporate. Minute of Angle (MOA) is critical to sighting in your scope. MOA mathematical concepts were used to develop the AccuScope scope sighting reference tool. The only MOA information needed to use AccuScope is your scope's MOA number.
Target shooters often refer to the accuracy of a riï¬e in âminute-of-angle.â. The following explains the difference between Mil-Dots and Minutes-of-Angle. Minute-Of-Angle. The term âminute-of-angleâ (MOA) is used regularly by target shooters at the range, but is probably under-. stood, thoroughly, by few (the same goes for mil-dots). Deï¬ned loosely, one MOA = 1â @ 100 yards; so, if you.