Object name: NGC7209
NGC 7209 is a type III1p open cluster in Lacerta discovered by William Herschel on October 19, 1788. It lies about 3800 light-years from us and is a bit over 400 million years old per WEBDA. It has two rather red stars near its center. Some amateur images call these carbon stars though I can't find anything to support this. My sources say the brighter is a K4 star while the fainter is a late G star. How late varies a bit. Neither are listed as being carbon stars. The Sky's database puts the K4 star at 5700 light years, SIMBAD says nearly 15,0000. Either way, it isn't likely a member. I can't find a distance for the G star in The Sky, Simbad puts it at 2100 light-years. I don't have error bars for either the cluster or star. I suppose it possible it is in the cluster as these distance determinations are usually pretty fuzzy. But it isn't a carbon star that I can find.