Drag obstacle silhouette or click shadow plane to position probe meter
Observational Presets
Planetary Geometry
-4.6
28% (Crescent)
0.45 AU
Environment & Setup
Class 2
Cardboard Baffle Light Shield
88%
Observer Scotopic Vision
25 min
Physics & Biology Rule: Venus delivers ~10–14 µlx at peak brilliance. Rod cells (scotopic vision) require ~20–30 min for rhodopsin regeneration to discern contrast ratios > 1.05.