The sky belongs to everyone.
Real-time feeds, hemisphere-aware alerts, and a worldwide community for serious amateur astronomers. Built for observers everywhere — not just the UK and USA.
Built for serious observers.
Wherever you are — São Paulo, Nairobi, Sydney, or Reykjavik.
Both Hemispheres
Northern and Southern hemisphere feeds, DSO recommendations, and tonight's sky panels. Southern observers get Magellanic Clouds, Omega Centauri, Eta Carinae — not a Northern feed with a flag.
Real-Time Alerts
Live NASA GCN transients, NOAA space weather, Near-Earth Object approaches, and Minor Planet Center circulars — global events, no geographic filter.
Arxiv Preprints
Auto-updating astro-ph feed with keyword filtering. Read the research before it's published in journals.
Global Community
A moderated discussion board for observers worldwide — from Reykjavik to Cape Town to São Paulo. Share observations, coordinate campaigns.
Equipment Guides
Curated telescope and accessory recommendations from experienced observers. Southern hemisphere picks included.
Open Source Sky
Built by observers, for observers. Contribute sightings, share discoveries, and help map the sky together. No gatekeeping — astronomy belongs to everyone.
Built for where you actually observe.
Existing platforms like AAVSO and the BAA do excellent scientific work. But they were built for English-speaking audiences in North America and the UK, require paid membership for most tools, and show no awareness of the Southern hemisphere. StarScope is free at its core, works for both hemispheres from day one, and delivers the same live data streams professional astronomers use.
| Feature | StarScope | AAVSO | BAA |
|---|---|---|---|
| Free to join and use | ✓ Free core | ✓ Free core | ✗ £32.50+/yr |
| Southern hemisphere support | ✓ Built-in | ✗ Northern bias | ✗ UK-centric |
| Real-time research feeds (Arxiv, GCN) | ✓ Available | ✗ Not available | ✗ Not available |
| Live aurora / space weather alerts | ✓ Free | ✗ Not available | ✗ Not available |
| Comet & NEO close-approach alerts | ✓ Free | ✗ Not available | ✗ Not available |
| Interactive sky map | ✓ Free (Stellarium) | ✗ Not available | ✗ Not available |
| Real-time community chat | ✓ Free | ✓ Forum (members) | ✓ Forum (members) |
| Custom keyword notifications | ✓ Available | ✗ Not available | ✗ Not available |
| Mobile-first modern interface | ✓ | Partial | ✗ WordPress |
| No annual subscription required | ✓ | ✓ | ✗ Required |
Support Open Astronomy
StarScope is built by observers, for observers. No ads, no tracking, no corporate agenda. If this platform is useful to your observing, a contribution helps keep it independent and free for everyone.
Processed securely via Stripe. No account required.