HomeAppsBooks & ReferenceAstrophoto CalculatorApps like Astrophoto Calculator Here are some great alternatives to Astrophoto Calculator by W. Strickling : Star Trail Calculator ★4.5 Photo Tools PRO ★4.4 Photo Tools ★3.6 Telescope calculator ★4.1 Telescope calculator pro ★4.5 Bellows Factor ★4.4 Photography Calculator Tools ★4.2 Photo Tools ★3.5 APT Darkness Clock ★5.0 FotoTool - Photographer Tools ★4.5 Hyperfocal - (calculator) ★3.9 Ephemeris: Sun and Moon Seeker ★3.4 Photo Friend exposure & meter ★4.4 Photo Metadata Viewer ★3.3 Photographer's companion ★4.0 SkEye Cam ★4.3