For photographers & planespotters

Know when a plane is about to cross the moon.

LunAir monitors live flight paths around your location and alerts you when an aircraft is predicted to cross the moon, up to six minutes in advance. Save your location once, keep your camera nearby, and let LunAir watch the sky for you.

Start free How it works
4,215 moon transits Since monitoring began
32,250 unique aircraft tracked Across live flight networks
Live ADS-B Real-time flight data
Pre-transit countdown Time to set up your shot
FLIGHTAA92
ALT10,670 m
GROUND SPEED500 kts
TRANSIT IN 2M 14S
The moment

From notification to photograph. In minutes.

You get an alert when an aircraft is on a trajectory to pass close to the moon as seen from where you are. You step outside with your camera. You wait for the moment. You take the shot.

LunAir dashboard at Zürich airport: a transit alert for British Airways flight BAW540, London Heathrow to Bologna, an A319 at 39,000 feet and 503 knots, 15 seconds before it crosses the moon, with the direction and elevation to point at
The LunAir dashboard · the BA540 alert, 15 seconds out
BA540 · London–Bologna G-DBCH · A319 · 39,000 ft · 503 kt

One alert, one shot · more frames below

How it works

Three steps. One unforgettable shot.

01 — Set up

Set your location

Use your current location or enter an address. LunAir uses your exact viewpoint to calculate where the moon and nearby aircraft appear in your sky.

02 — Watch

LunAir watches the sky

LunAir continuously monitors live flight data and projects nearby aircraft paths up to six minutes ahead. The moment a transit is likely, you get a push notification with everything you need.

03 — Capture

Take the shot

Your alert shows where to point your camera and counts down to the predicted transit. Frame the moon, get ready, and capture a moment that would otherwise be easy to miss.

For years, capturing an aircraft in front of the moon came down to being lucky enough to look up at the right moment. I built LunAir to watch the sky for you and alert you before that moment arrives.
— The founder of LunAir
Recent sightings

Alerts, caught on camera.

Every one of these started as a LunAir notification. Most crossings last under a second. Some frames catch the aircraft on the Moon’s face; others show the closest approach a moment before or after. Open a frame for the full photograph.

TransitLX1082 · Geneva–FrankfurtHB-JCA · A220-300 · 30,000 ft · 473 kt
TransitLZB432 · Paris–SofiaLZ-FRA · A220-300 · 42,700 ft · 492 kt
TransitBA611 · Venice–LondonG-EUUO · A320 · 36,000 ft · 404 kt
TransitU25406 · Amsterdam–Milan LinateEI-DTM · ITA livery · 36,650 ft · 474 kt
TransitAF934 · Paris–AntananarivoF-HTYM · A350-900 · 36,700 ft · 554 kt
TransitKLM1613 · Amsterdam–Milan LinatePH-BXH · 737-800 · 39,000 ft · 470 kt

Twelve frames, twelve LunAir alerts · open any frame for the full photograph

Features

Built for photographers who’ve been waiting years.

Everything you need to catch transits the moment they happen.

Moon transit alerts

Know the second any aircraft is about to fly past the lunar disk from your viewpoint.

Live ADS-B data

Live aircraft positions from multiple flight-tracking networks are combined with precise moon-position calculations to give you up to six minutes to get ready.

Push notifications

Phone in your pocket? You’ll still know. Receive alerts on iPhone and Android even when LunAir isn’t open.

Pro

Multiple locations

Save up to 5 spots: your home, your favourite shooting location, the airport viewing area.

Pro

Detailed shot setup data

See the moon’s azimuth and elevation, plus the aircraft’s altitude, speed, and heading, so you can point and frame your shot faster.

Pro

Weather-aware filtering

Local cloud cover is checked before every alert, so you’re only notified when the sky at your location actually gives you the shot.

Pro
Pricing

Free to start. Pay only when you’re ready.

The free tier is genuinely useful: real alerts, real data, no credit card. Upgrade when you’re ready for push notifications and the full experience.

Free
$0 / forever
Get started, no credit card needed.
  • Moon transit alerts
  • One saved location
  • In-app notifications
  • 6-minute prediction window
  • Live ADS-B flight data
  • Push notifications (Pro)
  • Multiple saved locations (Pro)
Start free
Pro
$5 / month
For active aviation photographers.
  • Everything in Free
  • Push notifications (iOS & Android)
  • Up to 5 saved locations
  • Detailed shot setup data
  • Weather-aware filtering
  • Priority alert delivery
  • Cancel anytime, no fees
Start 14-day trial
Coming next

More features in the pipeline.

A native iOS app is on its way to the App Store, and we’re working on rare aircraft watchlists (track A380s, military, specific registrations) and sun transit alerts for daytime shots. Be the first to know when these launch.

Native iOS app LunAir is coming to the App Store as a fully native iPhone app — same alerts, first-class notifications, no browser required.
Rare aircraft watchlist Get notified when an A380, military, or any aircraft you specify flies within range.
Sun transit alerts Daytime aircraft transits across the sun: equally striking, available every day.

No spam. Just a single email when each feature ships.

Questions

Things people ask.

What exactly is a moon transit?
A transit is when an aircraft passes directly in front of the moon as seen from your specific location on Earth. The moon is only ~0.5° wide in the sky, so from any single viewpoint these moments are rare and brief, typically lasting less than a second.
How do I install LunAir? Is it in the App Store?
LunAir is a Progressive Web App that installs to your home screen. No App Store needed.

iPhone (Safari): Open app.lunairapp.com, tap the Share button , and choose "Add to Home Screen."

Android (Chrome): Open the menu and select "Install app."

Once installed, LunAir launches full-screen and delivers push notifications like any native app. A native iOS app is coming to the App Store soon.
How often will I actually get alerts?
Alert frequency depends heavily on air traffic, your location, and the moon’s position. Locations beneath busy flight routes may receive several alerts in a day, while quieter areas may go weeks without one. The easiest way to see what is available near you is to add your location on the free plan.
How much lead time do I get before a transit?
Up to 6 minutes (the length of the prediction window), depending on aircraft speed and altitude. That's enough time to grab your camera, set up a tripod, and confirm your framing. Push notifications on the Pro plan give you that warning even when the app isn't open.
Does it only work with the full moon?
No. LunAir tracks transits across every moon phase, day or night. Full and gibbous phases are most spectacular for photography because the lit surface provides contrast for aircraft silhouettes, but crescents and even daytime transits can produce striking shots.
How accurate are the alerts?
LunAir calculates the moon’s position very precisely, but aircraft paths can still change. Each prediction is updated as new live flight data arrives, so alerts are not guarantees and may disappear if an aircraft turns, changes altitude, or is no longer on course for the transit.
Where does the flight data come from?
We pull live ADS-B transponder data from several global flight-tracking networks and pick whichever gives us the best coverage where you are. Worldwide reach, automatically optimized for your location.
What camera gear do I need?
More than you'd think, and less than you'd fear. Serious results typically come from a 400mm equivalent telephoto lens or longer on a tripod, with exposure similar to standard moon photography (around f/8, 1/2000s, ISO 200 in daylight). But you don't need to start there: modern smartphones with telephoto lenses (iPhone 15 Pro and newer, Samsung Galaxy S24 Ultra, Pixel 8 Pro) can absolutely capture transits too. We put together a full guide on gear, settings, and technique for both setups if you want to go deeper.
What's the difference between Free and Pro?
Free gives you one saved location and in-app notifications: enough to see what LunAir can do. Pro adds push notifications (so you don't miss alerts when the app is closed), multiple saved locations, and detailed flight data for every prediction. Pro is $5/month or $50/year with a 14-day free trial.
Can I cancel anytime?
Yes. Paid plans cancel instantly with no fees. You keep access through the end of your billing period and revert to the free tier afterward. No emails, no friction.
Do you share or sell my data?
No. LunAir is built and operated by a single founder, not a data company. We only store the information needed to run the service: your account email, your saved location, and your subscription status. Nothing else is shared with anyone. See our privacy policy for the full details.

New to moon transit photography? Read the guide →

Start tracking

Set your location. Let LunAir watch the sky.

Start free in under a minute and get alerted when an aircraft is predicted to cross the moon from your location.

Start free
Airliner on the upper edge of the daytime moon, twin contrails streaming away across the disc