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.
Re: MRAD and MOA scope adjustments, please educate me. What I am garnering here is that in an MOA scope the adjustments are in fractions of an inch, be it 1/4, 4 clicks to move the POI 1 at 100 yards and so on, on a 1/8 MOA scope you would need 8 clicks to accomplish the same.