🔭 What to Observe Tonight in the Sky? 🤔

Tonight's sky is clear, the Moon is not too bright… but which deep-sky objects should you observe?

I created a unique interactive application that selects in real time the best deep-sky objects and planets you can actually observe with your telescope. Forget about globular clusters appearing as tiny, blurred spots in a small telescope — this app shows only what’s realistically visible.

Features for amateur astronomers:

• Selection of stars, star clusters, nebulae, and galaxies based on your telescope diameter,
• Moon phase consideration to avoid wasted observation nights,
• Dark mode to protect your night vision,
• Interactive checklist: mark your “to observe” targets, take notes in real time, and track your personal observations,
• Data stored locally in your browser for complete privacy.

Pro tips: Start with bright and easy-to-see objects, even if you have a large telescope. Look for targets marked 👌 Ideal Choice for the best viewing experience!

Mobile-friendly: This app works perfectly on smartphones, making it your portable observation log. Combine it with Stellarium or other planetarium software to locate objects quickly and make the most of your stargazing nights

Important note: All selections and notes are saved locally in your browser. To keep your data across devices, export or copy your notes — they are not automatically synchronized.

Collaborative Version 2.0
Share your observations: check off the objects you've observed and rate them ⭐. Your contributions help the astronomy community pick the best deep-sky targets.

Version 2.0

🌟 Welcome, fellow stargazers!
This tool was originally created in French 🇫🇷, but I wanted to share my beautiful app with the global astronomy community!
Here you’ll find translated guides, object descriptions, and observing tips so everyone can enjoy the night sky.
And don’t hesitate to share your own observing and comments!
Enjoy your observations!
Clear skies!
Dany