AstroTool-NpfCalc

NPF exposure time calculator for astrophotography.

Features

• NPF rule calculation to avoid star trailing.
• Dynamic 3D visualization of the NPF surface.
• Celestial objects database (Messier, Constellations, etc.).
• Filtering by latitude and season.
• Equipment management (Sensors and Lenses).

Installation

Windows

Download and run the .exe installer file (recommended).

Linux

Extract the .tar.gz archive and run the executable.

Development

Build and Distribute (Windows)

Prerequisites:

• NSIS (Recommended): To generate the .exe installer.

To generate the installer, run the following PowerShell script:

Set-ExecutionPolicy -ExecutionPolicy Bypass -Scope Process; .\build_dist.ps1

or simply:

powershell -ExecutionPolicy Bypass -File .\build_dist.ps1

License

This project is licensed under the MIT License. See the LICENSE file for more details.

Credits

Software Libraries

This project uses the following libraries:

• egui: Immediate-mode graphical user interface library.
• plotters: Rust plotting library.
• fluent: Localization system for natural-sounding translations.
• serde: Serialization/deserialization framework.

Astronomical Data

Celestial object data (Messier, Constellations, Nebulae) are based on public astronomical catalogs.

• Messier Catalog
• New General Catalogue (NGC)
• Index Catalogue (IC)