Record Name | Ans_02775-056 |
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Photographer | Unbekannt |
Dating | 13.02.1892 |
Caption | Sunspots. Place: Royal Observatory, Greenwich. Instrument: Dallmeyer Photo-Heliograph. Aperture: 4 in., with negative enlarging lens. Exposure: About 005sec. Passepartout. |
Caption (German) | Sonnenflecken. Place: Royal Observatory, Greenwich. Instrument: Dallmeyer Photo-Heliograph. Aperture: 4 in., with negative enlarging lens. Exposure: About 005sec. Passepartout. |
Physical description | Fotografie : Papierabzug, auf Karton montiert |
Format | Spezialmass |
Special size | 16 x 16 cm |
Colour | schwarz/weiss |
Orientation | Quadrat |
Categories |
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License | Public Domain Mark |
Copyright notice | ETH-Bibliothek Zürich, Bildarchiv / Fotograf: Unbekannt / Ans_02775-056 / Public Domain Mark |
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