Moon behind the focus

© CC-BY-4.0 Tammo Jan Dijkema

There are several excuses for this picture not turning out perfectly. Given the following, I think it's not too bad. 1) It was taken using my cellphone. 2) Lacking a tripod, the phone was lying on the ground resting on my backpack. 3) It was freezing 4 degrees, so my fingers froze a bit operating the phone. 4) The picture was taken facing a full moon, only partly blocked by the focusbox of my favourite telescope.

Note that this picture, along with many others, is featured on the brand new Instagram channel of the radio telescope.