Object name: NGC6939
NGC 6939 is a rather well known open cluster in Cepheus near the more famous NGC 6946 galaxy. In small scopes where only the brighter stars are seen they seem to array in rows much like a bank of stadium lights. That effect is totally missing from my image. The WEBDA cluster database puts its distance at about 3850 light-years though I've seen other uncredited estimates of 5800 light-years. Again, astronomy hasn't yet found a good way to pin down the distance to most such clusters leading to various estimates depending on methods used and assumptions made about extinction from dust and gas in our galaxy which is also hard to determine.