linkvane brings together ten carefully crafted astronomy tools — from moon phase tracking to telescope optics — all running locally in your browser, no account required.
Each tool is purpose-built for a specific astronomical task.
Find the exact lunar phase for any date. Displays phase name, illumination percentage, and age of the moon in days.
Check which planets are visible tonight from your location, with rise and set times and sky position data.
Identify which constellations are visible from your latitude and the current month, with seasonal sky guides.
Calculate upcoming solar and lunar eclipses for any year, with type, date, and visibility region information.
Get precise sunrise, sunset, solar noon, and golden hour times for any location and date worldwide.
Estimate the apparent and absolute magnitude of stars based on distance and luminosity inputs.
Browse annual meteor shower events with peak dates, ZHR rates, radiant constellations, and viewing tips.
Convert between equatorial (RA/Dec), galactic, and ecliptic coordinate systems with precision.
Convert astronomical distances between light-years, parsecs, AU, and kilometers with full precision.
Calculate your telescope's true field of view, magnification, and exit pupil based on optics specifications.
linkvane is a free, browser-based astronomy toolkit designed for anyone who looks up at the night sky and wants to understand what they see. Whether you are a casual stargazer, a student learning celestial mechanics, or an amateur astronomer planning an observation session, linkvane gives you the calculations you need without requiring any software installation or account creation.
Every tool on this site runs entirely in your browser using standard web technologies. There are no servers processing your data, no tracking of your location, and no paywalls. You enter your parameters, and the results appear instantly.
The tools cover a broad range of astronomical topics — from the geometry of lunar phases and the optics of telescopes to the coordinate systems used by professional observatories. Each tool is paired with a detailed tutorial page that explains the underlying concepts and practical use cases.
linkvane is suited for students, educators, amateur astronomers, astrophotographers, and anyone with a genuine interest in the science of the sky. The goal is simple: make accurate astronomical calculations accessible to everyone.