Here's the little finger method applied to the aeroplane. I suspect that my finger might be slightly nearer than previously measured due to the constraints of taking the photograph but would block out no more than 1.2 degrees of my vision if it were 60cm away from the camera. The plane is a quarter the size (I measured a big photograph) so the plane subtends 0.3 degrees of my vision. which is 0.005 radians. If the plane is 60 metres long in real life it is 11 km above me, about 7 miles. This photograph was taken near Oxford. It may be different in Wigton where the planes are preparing to head out over the Atlantic.
