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.
Hunters calibrate the scope for their rifle and cartridge, and an MOA-adjusted dot for exact hold over is generated. Rangefinding riflescopes take the guesswork out of shooting at long distances, making it easier to hit targets from more than 700 yds. away.