On April 30th, 2018 I took photos of the full moon using my photo camera Nikon P-900 in Kraków - Nowa Huta. On the left side it is one of the photos of the Moon (you can enlarge it by clicking on it). At one point the plane flew leaving behind a streak (contrail or chemtrail, I do not know). On both sides of the streak I noticed gleaming points. You can see them in the photo below. The first point is between the Moon and the streak, the second one - below the streak.
I took another picture (below) with higher zoom in which you can see that the object below the streak did not change its position, while the object above the streak approached it.
I increased the mysterious points in the photo above. You can see them in photos below.
The gray - black object, which did not changed its position, is Jupiter probably. I took similar photos of Jupiter on April 13th, 2018. One of them you can see in the photo below.
The second object was moving at that time. You can see it in photos below. In the first photo the object was disappearing near the streak and in the next one it appeared near the Moon.
I enlarged the image of the object and presented it below.
I do not know what it could be. It may be a reflection of light in a lens but it could be something else also.