Keywords: Oslo-prominences.png C F Fearnley University of Christiania Oslo These spectrohelioscopic observations in H-alpha were made during 1872-73 at the old University Observatory 1872 1873 Scanned from photographic print by uploader Photo obtained from University of Oslo in 1978 Carl Frederik Fearnley 1818-1890 Custom license marker 2012 12 17 PD-old-100 Uploaded with UploadWizard Prominence |