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Interactive celestial optics simulator for Solar and Lunar eclipses with Umbra and Penumbra shadow cone geometry.
About this tool
Interactive celestial optics simulator for Solar and Lunar eclipses with Umbra and Penumbra shadow cone geometry.
Solar & Lunar Eclipse Simulator is a free science tool that runs entirely in your browser — nothing to install, no account to create, and your data never leaves your device. Open the page, add your input, and get a clean, copy-ready result in seconds.
Open Solar & Lunar Eclipse Simulator on AltFTool — it loads instantly in your browser.
Add your input to the workspace.
Adjust the options until the result looks right.
Copy or download the output and put it to work.
A focused workspace for one-off content, data, or planning jobs — open it, use it, done.
Start with a rough input and iterate until the result matches exactly what you need.
Copy or download the output for your project, document, or daily workflow.
Yes — Solar & Lunar Eclipse Simulator is completely free on AltFTool, with no signup, no trial limits, and no hidden costs.
Yes. Solar & Lunar Eclipse Simulator runs in your browser, so what you enter or upload stays on your device instead of being sent to a server.
Interactive celestial optics simulator for Solar and Lunar eclipses with Umbra and Penumbra shadow cone geometry. It's built for quick, everyday science tasks with results you can copy or download straight away.
Yes — Solar & Lunar Eclipse Simulator works in any modern browser, on desktop, tablet, and mobile, with the same features everywhere.