Object name: NGC6940
NGC 6940 is a large type III2m open cluster in Vulpecula. It was discovered by William Herschel on July 17k 1784. It is in the original H400 observing program. My log for May 20, 185 on a good night with my 10" f/5 says, "Long one of my 'showpiece' open clusters for the public. It resembles more a star cloud than a cluster. It contains hundreds of medium to faint stars in a field filling cloud. For once the H400 guide understates the apparent number of stars in an open cluster." The "showpiece" appearance in my 10" scope is lost in my CCD image which doesn't show star brightness over the range the eye sees when looking at the cluster as it sees stars much fainter than the eye does. This image, at least the way I processed it fails to capture what the eye sees at the eyepiece of a 10" scope on a good night.
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