Focal Length of Scope in millimeters (FLs) | Aperture of Scope in Inches (APi) | fRatio of Scope | Aperture of Scope in mm (APm) | Theoretical Max Useful Magnification (30 x APi), max 150 | Dawes Limit (arc seconds) | Approx Visual Limiting magnitude ( 7.5 + 5 log aperture (in cm)) | Max Eyepiece Size in mm |
Eyepiece Type/Description | Eyepiece Focal Length (FLe) | Eyepiece Apparent Field of View (FOV) ° | Exit Pupil mm (EX=APm/M) | Eyepiece Power (M=FLs/FLe) | Eyepiece True Field of View ° (T=FOV/M) | Barlow Factor | Exit Pupil With Barlow (mm) |