Just wondering if there is information available regarding the great Comet of 1680 (modern designation C/1680 V1), specifically recorded observations of the time of scientific value and reasonably accurate data (if any) as to the actual physical size of the Great Comet of 1680. Any help / pointers would be appreciated. From what information I could gather in general terms it was reported to be a truly spectacular comet!
Hello Mike,I presume that you have looked at the information about this comet (discovery circumstances and subsequent development) in Gary Kronk’s Vol 1 pages 369-373 Cometography. This is the “bible” when it comes to researching past comets. If you have not got these pages let me know.It was an extrordinary comet with a description (from Cometography) from an observer in Sussex on 1680 Dec 20 afterthe comet had emerged form the sun’s glare in the southwest that the tail extended to the zenith and was broader than a rainbow. On the same day John Flamsteed said the comet appeared as a beam of light about the width of the moon extending stright up from the horizon. It had become visible before daylight had ended.