King Rate
abstracted from Manual of Celestial Photography by Edward S. King ©1955 King's formula, in terms of the rotation period of the hour axle in universal minutes is, when the hour axis is aligned on the refracted pole: There is a sensible diference in the drive rate for the hour axis aligned on the true pole: Gamma is the elevation of the hour axis above the true pole. At the refracted pole: At the true pole: hence therefore: mean minutes per revolution of the hour axle. as in where n is the RA worm ratio. This page was created by SimpleText2Html 1.0.2 on 29-JAN-2006 Top of Page Return to Home Page |