https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13958049Edit ImageSaveSaveEditCropCustom TextAstronomy: a 40-foot telescope constructed by William Herschel, in use outdoors. Coloured etching, 18--.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 1175 px | 300 dpiLarge JPEG 2708 x 2652 px | 300 dpiFree DownloadAstronomy: a 40-foot telescope constructed by William Herschel, in use outdoors. Coloured etching, 18--.More