Object name: NGC6664
NGC 6664 is an open cluster in Scutum discovered by William Herschel on June 16, 1784. It is in the original Herschel 400 observing program. That's how such a nothing object ended up on my to-do list. Some sources list it as 12 minutes of arc across while others say 16. In either case, it is fully in my image's field. Just which stars are members of the cluster isn't all that obvious. My description of it from May 20, 1985 using a 10" f/5 under good viewing conditions at 65x reads: "Large sparse, scattered star grouping. Makes me wonder if it is a true cluster or just a bright region of the Milky Way. Seems to have no definite edge as it just fades into the Milky Way." Apparently, I was having trouble making it out visually as well. Though the cluster is classified as III2m which means it is rather weakly concentrated (IV is most weakly concentrated), has an average mix of star brightness and moderately rich in stars. That seems to overstate it at least as I saw it visually and in this image.