[raymo]

Thanks for the reply Bo. It happened both nights. Ambient 8 and 10 deg.
subs assortment of between 45 and 105 secs. As far as I am aware, amp
glow is usually at the edge rather than in the middle.
I have just noticed that I said that the cloud was at the bottom right of the image. I should have said the bottom right of the object. [the Helix]. Why would I be getting amp glow now in the colder part of the year? You can see it in the image I just posted. It doesn't look like any examples I have seen.
raymo