LOADING THE NAVIGATION INSTRUMENT...
MY SIMULATOR · INSTRUMENTS / 001
Meridian
/
1857
The Mariner's Sextant — Study in Double Reflection
MEASURED ALTITUDE
42.0
°
Angular separation between the horizon and celestial object
Index arm · angular position
0° / HORIZON
120° / MAX
Mirror deflection
21.0°
Index pointer
−9.0°
Ray diagram
Auto scan
Telescope diopter · mechanical focus
NEAR
30%
FAR
Double-reflection law
Object altitude = 2 × mirror turn
42.0° = 2 × 21.0°
RESET VIEW
SAVE IMAGE
INDEX MIRROR
TELESCOPE
Made with 🤖 ChatGPT · Three.js