https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13989222Edit ImageSaveSaveEditCropCustom TextAstronomy: a large refracting telescope, at Birr Castle, Ireland. Engraving.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 860 px | 300 dpiLarge JPEG 2912 x 2087 px | 300 dpiFree DownloadAstronomy: a large refracting telescope, at Birr Castle, Ireland. Engraving.More