While waiting for it to get dark last night (there is no astronomical twilight in the UK at this time of year) I took about thirty 30 second images of M39 in Cygnus. The sky background was still very light but during processing a planetary nebula appeared nearby. As I’ve mentioned before, my favourite tool for identifying this sort of object is Aladin and this showed it to be Minkowski 1-79 (1946).
Also in the field is the rather faint open cluster Platais 1. One of it’s member stars is the Cepheid variable V1726 Cyg with a period of 4.2 days and diminutive brightness range of 8.87 to 9.06.
There are two readily identified double stars in M39; h1657 with a separation of 21.6″ and A770, rather closer at 7″.
North is up.