About a week and a half ago on the evening of the 23rd June 2021 we had a beautiful display of Noctilucent Clouds (NLC's). I have written about these night-shining clouds before and we had a display last year about this time but this year's was much more spectacular. I looked out towards the northern horizon about 11pm and I took a number of photos over a period of about half an hour. Here are the best of them (click on any image to obtain an enlarged view):-
These were taken on a Nikon D90 at ISO 800 with exposures of 4 and 5 seconds. The colours of the images have not been altered in any way. The clouds appear as this electric blue. There is certainly quite a bit of structure in the clouds here. The first shows definite banding whilst the second has sort of waves near the television aerial in the foreground. The last is really quite complex.
I think it has been quite a good season for NLC's. You can search for other images on the spaceweathergallery.com.
