Mi Guide

Mi Guide is a practical light‑pollution estimator for astronomy lovers, outdoor photographers, educators, and anyone who wants a clearer understanding of how nearby artificial lighting can affect the night sky.

Build a scene by adding one or more light sources (e.g., street lights, building lights, signage) and adjust key parameters such as luminous output, distance, shielding, and color temperature. Mi Guide then runs an on‑device model to estimate night‑sky brightness and related indicators, helping you compare scenarios, explore “what‑if” changes, and communicate results with clear charts and exports.

Key features

• Multi‑source scene builder with per‑source parameters

• One‑tap results: sky luminance (cd/m²), sky brightness (mag/arcsec²), Bortle class estimate, and a blue‑leakage indicator

• Contribution visualization per source

• Heatmap view with absolute and baseline‑difference modes

• Sensitivity analysis across key parameters

• Projects: save, duplicate, reset, and import/export JSON

• Export & share: image + text summary, share or save to Photos

• Optional reference photo for project context Privacy

• No account required.

• Your projects are stored on your device.

• Photos are optional and used only when you choose to add a reference photo or save exports to Photos.

• Mi Guide is designed for exploration and educational use. Results are estimates based on a simplified model and should not be treated as certified measurements. Permissions used

• Camera: to capture an optional reference photo for a project.

• Photos: to choose an optional reference photo and to save exported report images.