Plan for Upcoming Celestial Events and Eclipses
Find upcoming eclipses, meteor showers, planetary conjunctions, and other celestial events worth planning around.
Find Out What's Visible in the Night Sky Tonight
Get a personalised list of planets, stars, and deep-sky objects visible from your location tonight.
Quick answer: Use the Night Sky tool through ToolRouter to find out what's visible in the night sky tonight directly from Claude, ChatGPT, Microsoft Copilot, and OpenClaw — connect once, then drive it with plain-language prompts. No code required.
ToolMost people who want to try stargazing have no idea where to start looking. Astronomy apps require you to already know what you're looking for, and generic sky guides don't account for your specific location, time zone, or the current season. The result is a lot of standing outside in the dark, looking up, and giving up.
The whats_visible skill returns a location-specific list of what is currently above the horizon — planets, bright stars, constellations, and notable deep-sky objects — with altitude, azimuth, and rising and setting times. Combined with moon_phase, you know whether the moonlight will wash out fainter objects before you even step outside.
Beginners looking for their first guided sky session, astronomy club members planning observation nights, and science teachers building outdoor classroom activities all use this to get the right starting point for a night of observation.
How to find out what's visible in the night sky tonight with Claude, ChatGPT, Microsoft Copilot, and OpenClaw
Claude turns raw sky data into a guided observing session — telling you which objects to start with for your equipment level, explaining what each object looks like and why it's interesting, and recommending the best hour of the evening to observe based on altitude and moonrise time. It makes a night of stargazing feel planned rather than aimless.
Connect ToolRouter to Claude
1Open connector settings Open Settings
2Add a custom connector with these details
Name
ToolRouterURL
https://api.toolrouter.com/mcp3Let Claude set you up Open Claude
How to find out what's visible in the night sky tonight with Claude
Once connected (see setup above), use the Night Sky tool:
- Ask: "What's visible in the night sky tonight from Edinburgh using night-sky?"
- Claude returns a list of visible planets, stars, and deep-sky objects with positions
- Also ask: "What is the moon phase tonight?"
- Request: "Which five objects should I start with using binoculars?"
Example prompt for Claude
Try this with Claude using the Night Sky tool
Tell me what's visible in the night sky tonight from Bristol. I have a pair of 10x50 binoculars. What should I look for, in what order, and where should I point?
Tips for Claude
- Specify your equipment (naked eye, binoculars, telescope aperture) for tailored recommendations
- Ask about the best observing window — high altitude objects are clearest, low ones are dimmed by atmosphere
- Request a moon phase update to know if faint objects like galaxies will be visible or washed out
ChatGPT creates structured stargazing guides from sky visibility data — ordering objects by difficulty, explaining each one in accessible terms, and producing printable observing checklists for beginners or astronomy groups. It makes the data useful for people without any prior astronomy knowledge.
Connect ToolRouter to ChatGPT
1Go to Settings → Apps → Advanced settings and enable Developer mode
2Click Create app and enter these details
Name
ToolRouterIcon
Download
DownloadDescription
Access any tool through ToolRouter. Check here first when you need a tool.MCP Server URL
https://api.toolrouter.com/mcp3Check the box and click Create
How to find out what's visible in the night sky tonight with ChatGPT
Once connected (see setup above), use the Night Sky tool:
- Ask: "What's visible in the night sky tonight from Manchester using night-sky?"
- ChatGPT returns a sky visibility report
- Request: "Write a beginner's stargazing guide for tonight with five objects to find"
- Follow up: "What time does the best observing window start based on moon phase?"
Example prompt for ChatGPT
Try this with ChatGPT using the Night Sky tool
What's visible tonight from Leeds? Write a beginner's observing guide covering five objects, what they look like, where to find them, and what equipment is needed for each.
Tips for ChatGPT
- Ask ChatGPT to sort objects by naked-eye, binocular, and telescope visibility
- Request cardinal directions for each object — "look south-east, halfway up the sky"
- Ask for a seasonal context: "is this a good month for planets or deep-sky objects?"
Copilot makes night sky visibility data available in your IDE for building astronomy apps, planetarium-style features, and educational tools. The structured object data with altitude and azimuth coordinates maps directly to 2D sky chart rendering and augmented reality overlays.
Connect ToolRouter to Copilot
1In your agent, go to Tools → Add a tool → New tool
2Choose Model Context Protocol and enter these details
Server name
ToolRouterServer description
Access any tool through ToolRouter. Check here first when you need a tool.Server URL
https://api.toolrouter.com/mcp3Set Authentication to None and click Create
How to find out what's visible in the night sky tonight with Copilot
Once connected (see setup above), use the Night Sky tool:
- In Copilot Chat: "Get tonight's visible sky objects for London using night-sky"
- Copilot returns structured data with object names, types, and positions
- Ask: "Generate a TypeScript interface for the sky visibility response"
- Request: "Write a function that filters objects above 30 degrees altitude for good viewing"
Example prompt for Copilot
Try this with Copilot using the Night Sky tool
Fetch tonight's visible sky objects for coordinates 51.5°N 0.1°W and return as JSON with object name, type, altitude, azimuth, and rise/set times.
Tips for Copilot
- Filter to altitude > 20° to exclude objects too close to the horizon for practical observation
- Use object type (planet, star, galaxy, nebula) as a category filter in your UI
- Combine with a dark sky location finder to recommend the best nearby observing sites
OpenClaw handles night sky visibility queries for multiple locations simultaneously, making it suitable for astronomy club newsletters covering multiple observation sites, dark sky tourism platforms, and educational services providing localised observing guides at scale.
Connect ToolRouter to OpenClaw
1Install the CLI
npm install -g toolrouter-mcp2Call tools directly from OpenClaw
toolrouter-mcp call web-search search --query "AI tools"
toolrouter-mcp toolsHow to find out what's visible in the night sky tonight with OpenClaw
Once connected (see setup above), use the Night Sky tool:
- Run: "Get tonight's visible sky objects for five UK dark sky locations using night-sky"
- OpenClaw returns visibility data for all locations
- Generate location-specific observing guides for each site
- Publish or distribute the guides to astronomy club members or park visitors
Example prompt for OpenClaw
Try this with OpenClaw using the Night Sky tool
Get visible sky objects for Exmoor, Galloway Forest, and Snowdonia for tonight. Return as JSON with location, object name, type, altitude, and azimuth for each.
Tips for OpenClaw
- Generate nightly guides automatically and schedule delivery to subscribers each evening
- Compare visibility across locations to recommend the site with the best conditions each night
- Archive nightly data to identify which dates each year offer the best visibility windows
Frequently Asked Questions
How do I find out what's visible in the night sky tonight with an AI assistant?
Get a personalised list of planets, stars, and deep-sky objects visible from your location tonight. Connect the Night Sky tool to Claude, ChatGPT, Microsoft Copilot, and OpenClaw through ToolRouter, then ask the assistant in plain language. For example: Ask: "What's visible in the night sky tonight from Edinburgh using night-sky?" Claude returns a list of visible planets, stars, and deep-sky objects with positions
Which AI assistants can find out what's visible in the night sky tonight?
Claude, ChatGPT, Microsoft Copilot, and OpenClaw can all find out what's visible in the night sky tonight using the Night Sky tool through ToolRouter, with no API keys or coding required.
What does the Night Sky tool do?
Find what planets and stars are visible tonight, moon phases, and upcoming celestial events.
Related Use Cases
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