56VIP AstroRule

Professional shutter speed calculator for astrophotographers.

Master the night sky with Astro Rule, the essential tool for every astrophotographer. Whether you are a beginner or a seasoned pro, Astro Rule helps you capture pin-sharp stars by calculating the maximum shutter speed for your camera and lens combination.

Key Features:
- Rule of 500: Quickly estimate the best exposure time using the classic formula.
- NPF Rule: Get ultra-precise calculations that take into account your sensor's aperture and pixel density to completely eliminate star trailing.
- Visual Warnings: The intuitive UI alerts you when your shutter speed might be too short for optimal light intake.
- Offline Capability: Perfect for remote dark-sky locations. No internet connection required.
- Simple & Elegant: A clean, distraction-free interface designed for field use.

Supports all major sensor sizes including Full Frame, APS-C, and Micro Four Thirds. Never let star trailing ruin your perfect shot again. Download Astro Rule today and elevate your astrophotography!