Vertical Distance between Instrument Axis and Lower Vane evaluator uses Vertical Distance = Distance between Two Points*tan(Vertical Angle to Lower Vane) to evaluate the Vertical Distance, The Vertical Distance between Instrument Axis and Lower Vane formula is defined as the vertical distance above the plane of the instrument axis to the lower vane of the telescope. The formula is used when the observing point is at the elevation and both the angle by vane is at a higher elevation. Vertical Distance is denoted by V symbol.
How to evaluate Vertical Distance between Instrument Axis and Lower Vane using this online evaluator? To use this online evaluator for Vertical Distance between Instrument Axis and Lower Vane, enter Distance between Two Points (D) & Vertical Angle to Lower Vane (θ2) and hit the calculate button.