Using Televue's eyepiece calculator, I will get a 0.8 degree field of view using the 41mm Panoptic. What would my FOV be if the 41mm Panoptic were added to a 4X Powermate? It would give me 329.6X
Aperture: 254mm
FL: 3,378.2mm
Aperture: 254mm
FL: 3,378.2mm