Diffraction limit angle

θ≈1.22 λ/D aperture limit.

SIDUS educational calculator. Category satellite. Tags: comms, geometry, optical, satellite. Pure SI. Not flight software.

Formula

θ ≈ 1.22 λ / D

Diffraction-limited angle

Primary sources

• NASA Glenn Research Center: Beginner’s Guide to Aeronautics (NASA GRC): Ideal rocket equation, specific impulse, thrust equation, dynamic pressure education pages.
• Orbital Mechanics for Engineering Students (Howard D. Curtis): Textbook derivations for Hohmann, vis-viva, rocket equation, elements.

How do AI agents use this tool?

Read /llms.txt or call https://sidus.tools/api/mcp. Open the interactive page for live SI inputs.