Stargazing Optics & Eyepiece Field Simulator

Physical True FOV • Exit Pupil • Dawes Limit • Dark Sky Contrast
Angular span: 42 arcsec
TFOV: 0.64° (38.4')
Magnification 81.3x Focal ratio: f/10.0
True FOV (TFOV) 0.64° 38.4 arcmin
Exit Pupil 2.50 mm Optimal Contrast
Dawes Limit 0.57" Rayleigh: 0.68"
Light Gathering 841x vs 7mm human eye
✓ Optimal planetary & deep-sky magnification range. Balanced surface brightness and detail resolution.
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