Tonight's sky
Free suggested targets below. Explorer unlocks the interactive sky map and AR star finder.
Observing location
London (default) · 51.51°N, 0.13°W
Sky map and AR overlays use this latitude and longitude for tonight's visible stars.
Sky alerts
Aurora and eclipse warnings for your observing site.
Sky alerts
Get aurora and solar/lunar eclipse warnings tailored to your observing location.
Included with Explorer (£4.99/mo)
Tap to explore the Explorer plan and upgrade.
Interactive sky map
Pan an interactive chart of tonight's sky, then point your phone at the stars with AR mode.
Explorer feature
Unlock the interactive sky map and AR star finder.
Included with Explorer (£4.99/mo)
Tap to explore the Explorer plan and upgrade.
AR star finder
Hold your phone up to the night sky and see stars labeled in real time.
Explorer feature
Unlock AR star finding alongside the interactive sky map.
Included with Explorer (£4.99/mo)
Tap to explore the Explorer plan and upgrade.
Telescope control
Connect an Alpaca bridge to slew your mount from the app. Requires the Observer plan.
Observer feature
Telescope control, Alpaca bridge, and observation logs.
Included with Observer (£9.99/mo)
Tap to explore the Observer plan and upgrade.
Find planets, Messier deep-sky objects, bright guide stars, and constellations with live altitudes.
Hercules Globular Cluster (M13)
A dense, sparkling ball of several hundred thousand stars in the northern sky.
Gear: Telescope Eyepieces & Accessories
The fifth brightest star in the sky, standard zero-point baseline for photometric magnitude.
Gear: Telescope Eyepieces & Accessories
A classic smoke-ring planetary nebula expelled by an aging dying star.
Gear: Deep-Sky Telescopes & Optics
Cruciform constellation flying down the spine of the Milky Way, holding Deneb and Albireo.
Gear: Telescope Eyepieces & Accessories
Suggested targets
Free for everyone — visibility updates for your observing location.
Andromeda Galaxy (M31)
Easy
Low in the sky · 19° up · NE
Gear: Skyliner 200P Classic Dobsonian
8-inch aperture to resolve dust lanes and outer spiral arms
Below horizon · best later tonight (N)
Gear: Horizon AC 70/700 Refractor
Wide-field refractor optics to frame the entire open cluster
Below horizon · best later tonight (NE)
Gear: Omegon 2× Barlow Lens (1.25")
Doubles magnification for planetary cloud bands & moons
Below horizon · best later tonight (N)
Gear: Heritage 130P FlexTube Dobsonian
High light-gathering aperture for bright emission nebulae