How to spot NOCTILUCENT CLOUDS
Five top tips for spotting NLC displays
1. Look for NLCs in the northern sky, 90–120 minutes after sunset, between the end of May and start of August. They sometimes appear at the same time before sunrise.
2. Ensure you’re facing the right direction, by looking towards the bright star Capella (Alpha (a) Aurigae) in the constellation of Auriga.
3. If you plan to take photographs, use a tripod and an exposure time of between 2 and 6 seconds.
4. It’s hard to predict the weather but try and choose a day with clear skies.
5. Look out for white or electric blue clouds, maybe with a herringbone or rippling sand-type pattern.