I've been monitoring skies on and off for about six years, and I've seen a lot of newcomers start enthusiastically but give up within weeks because they don't know what they're actually looking for. So I thought I'd write a basic methodology guide for anyone wanting to start.
What to observe:
- Unusual flight characteristics (impossible manoeuvres, hovering, extreme acceleration)
- Unconventional lighting patterns
- Silent aircraft (given the location relative to flight paths)
- Formation changes
- Behaviour around known landmarks or repeating locations
Essential tools (under £100):
- Decent binoculars (£30-50, don't skimp - Nikon Prostaff are reliable)
- Recording device (your mobile phone is fine, honestly)
- Notebook for timestamps
- A star chart app (Stellarium is free)
Common misidentifications to rule out immediately:
- International Space Station (predictable, extremely bright, silent, fast)
- Conventional aircraft (check flight tracking apps like FlightRadar24)
- Planets at twilight (Venus especially - it's massive, bright, and confuses people annually)
- Satellites (numerous, predictable, fast)
- Drones (increasing - check local drone activity)
Real observation requires patience. You might watch empty sky for weeks before seeing anything anomalous. But when you do, you'll want to be prepared to document it properly.