Visibility II / V
Very dim illuminating night clouds, almost like cloud streaks at a quick glance. However, they stood out clearly when you knew how to look.
I went to check the situation a little after the turn of the day and then nothing was visible in the sky, the weather was partly cloudy. A little later I got an alert that there might be something to the north. So a quick return to the observation point on the top floor platform and yes, there was a dim night cloud there low down right next to the horizon. Pentti Arpalahti , in his own observation from the same period, has estimated the height to be five degrees, and that is probably quite close to the truth, I myself estimate the height to be about four degrees.
I guess we'll take the last of the illuminating night clouds here in the latitudes of Southern Finland, we'll see if we can still get a farewell show or if this will be the last one, at least for me.
A cell phone photo as photographic evidence of the sighting, sorry for the graininess.
After this observation, it was supposed to start the observation season for the planets, so the telescope under the arm and in the yard. However, the night clouds that were so low were no longer visible there. It should be mentioned that at 1:07 a.m. Anne Wirtanen 's eyes flashed (apparently) the Perseid, which was slightly dimmer than Jupiter in brightness. The maximum magnitude in the yard was only around three, and the sky was cloudy with variable gauzy cloudiness. Naturally, when a shooting star flashed by, I looked somewhere else and didn't even have time to hope to see one.