Get in touch
Suggest a tool, report a broken calculator, or share a clear-sky observation story. Messages are read within a few days.
Feedback rules
- Be specific — which tool, which browser, which value.
- No account required — leave email blank to stay anonymous.
- Please don't send API keys, credentials, or personal astronomical data.
Suggestion channel
Have a niche tool idea we haven't listed? Send it — we prioritise anything that would work with public, keyless data sources.