THE OPTICS WORKBENCH
What will your telescope show?
Explore magnification, exit pupil and approximate field of view before your next observing session.
CALCULATED OPTICS
48×
Magnification
- Exit pupil
- 3.13 mm
- Approximate true field
- 1.04°
- Dawes’ limit estimate
- 0.77 arcsec
- Focal ratio
- f/8.0
Moon ≈ 0.5°
Schematic lunar disk within the calculated field. The actual Moon’s angular diameter varies.
True field ≈ apparent field ÷ magnification. Dawes’ limit is an idealized double-star estimate, not a promise of real detail. Seeing, alignment and optical quality matter.