Object name: NGC7142
NGC 7142 is an open cluster in Cepheus that was discovered by William Herschel on October 18, 1794. It' isn't in either H400 program, WEBDA puts it at a distance of 5,500 light-years. The cluster is in the original Herschel 400 Observing Program. My entry from June 14, 1985, with my trusty Cave 10" f/5 under humidity cloaked skies at 60x reads: "Large, highly elongated cluster of mostly very faint stars. Over 50 stars seen though all but a dozen seem too faint for a 6" telescope, at least under my humid skies. I ran right over this faint cluster the first time I looked for it. It must be very difficult in a 6" telescope." Odd but I had a 6" f/4 at hand but never used it on the cluster, only surmised what I'd see in it. Can't find I ever looked for it in either of my 6" scopes (f/4 or f/12). WEBDA puts the age of the cluster at 1.9 million years with 0.4 magnitudes of reddening from galactic dust.