The five-foot spectroheliograph showing the slit end, Mount Wilson Observatory. Image courtesy of the Observatories of the Carnegie Institution for Science Collection at the Huntington Library, San Marino, California.
Spectrograph Spectrohelioscope Spectrum analysis--Instruments Astronomical instruments Mount Wilson Observatory Mount Wilson (Calif.) Photographic prints. (gmgpc)
If you're wondering about permissions and what you can do with this item, a good starting point is the "rights information" on this page. See our terms of use for more tips.
Share your story
Has Calisphere helped you advance your research, complete a project, or find something meaningful? We'd love to hear about it; please send us a message.