Objective or Main Mirror Diameter (mm):          

                            Objective or Main Mirror Focal Length (mm):   

                            Eyepiece Focal Length (mm):                                

                            Eyepiece Apparent Field of View (degrees):         


                                                      



           DAWE'S LIMIT for this Aperture     arc seconds                  Focal ratio                         

           Eyepiece Magnification                                                             Light gathering power     

           Actual Field of View                             degrees                        Exit Pupil Diameter             mm

           Airy disc diameter                                 mm                             Magnified Airy diameter     mm