Denne knap beregner synsfeltvinklen for en bestemt kombination af okular/ teleskop. Du skal først angive brændvidden for teleskopet og okularet, og synsfeltets vinkel for okularet i de ovenstående felter. Den beregnede synsfeltsvinkel (i bueminutter) vil blive vist i feltet redigeringsfeltet "Synsfelt".
This button will compute the field-of-view (FOV) angle for a specific eyepiece/ telescope combination. You must first specify the focal lengths of the telescope and eyepiece, and the FOV angle of the eyepiece in the above entry fields. The computed FOV angle (in arcminutes) will be displayed in the "Field of view" edit box.