How to Photograph Aircraft Crossing the Moon
Photographing a plane crossing the Moon is one of those shots that looks simple after someone else gets it. In reality, it takes a mix of planning, luck, fast reactions, and a bit of patience.
The good thing is that Moon transits are a great place to start. They are safer than Sun transits, easier to frame, and you can practise without worrying about solar filters.
What gear do you need?
You do not need the most expensive gear in the world, but a longer lens helps a lot. Something around 400mm to 600mm is a good start. A telescope can also work well if you already use one for lunar imaging.
A tripod helps, especially if you are waiting for a while. But some photographers still shoot handheld with a fast shutter speed, especially with modern stabilised lenses.
The main thing is reach. The Moon is small in the sky. The more focal length you have, the bigger the Moon appears in your frame, and the more dramatic the aircraft transit looks.
Basic camera settings
Start with a fast shutter speed. Aircraft move quickly, and the crossing can be over before you properly react. Something like 1/1000s or faster is a good starting point.
Keep your ISO as low as you can while still getting a sharp image. The Moon is usually bright enough that you do not need very high ISO, especially when it is full or close to full.
Manual focus is usually better. Focus carefully on the Moon before the aircraft arrives. Do not wait until the alert happens to start focusing. By then, it may already be too late.
Why timing matters so much
A plane might only take a fraction of a second to cross the Moon. This is why burst mode or video can be helpful. If you only take one photo at the exact moment, there is a decent chance you will miss it.
For still photography, use high-speed burst mode if your camera supports it. For video, record before the expected crossing and keep going for a little while after.
Using Transit Chaser
Open Transit Chaser, allow your location, and choose Moon mode. The app checks nearby aircraft and compares their position with the Moon from your location.
If an aircraft may line up with the Moon, the app will alert you. The alert is not a promise that the plane will cross the exact centre of the Moon. It means the aircraft is close enough to be worth paying attention.
The detection margin setting controls how strict the alert is. A smaller margin is stricter and better for photography, but it may miss near events. A larger margin gives more warning, but some alerts may not produce a clean transit.
Best practical approach
Frame the Moon first. Focus properly. Set your exposure. Turn on burst or video. Then leave Transit Chaser running and wait.
When an alert happens, do not spend time changing settings. Start shooting. The plane may arrive quickly, and the best frames are usually gone in a second.
Why alerts can disappear
Sometimes Transit Chaser may show an aircraft as a possible transit, then the alert disappears. That can happen because the aircraft changed heading, altitude, speed, or the live data updated. This is normal.
Aircraft transit prediction is not like predicting a sunrise. Planes move, turn, climb, descend, and sometimes the data comes in late. The app is trying to give you a useful warning, not magic.
Final tip
Do not wait for the perfect night. Practise on any clear Moon. Even near misses teach you a lot about framing, timing, exposure, and how aircraft move through your lens.