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| physical object > artifact > device > instrument > telescope > electromagnetic telescope > Earth based telescope > equatorial telescope > English equatorial telescope > 28-inch Visual Refractor |
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| 28-inch Visual Refractor comparison table | ||||||||||||||||||||
| Subject | has comment | has reference | has location | has owner | has latitude | has lens maker | is a kind of | has optical design | has temperature | has altitude | is an instance of | has synonym | has focal ratio | has aperture | has mount | has lens type | has definition | has mounting manufacturer | has longitude | has creation date |
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| English equatorial telescope | in degrees, minutes, seconds (N or S) | equatorial telescope | ambient | height above sea level in meters | English equatorial | the person, company or institution that constructed the mounting | in degrees, minutes, seconds (E or W) | |||||||||||||
| refractor | astroweb | the person, company or institution that created the lens | optical telescope | visual refractor | doublet | A device for gathering and amplifying light by means of a lens. | ||||||||||||||
| 28-inch Visual Refractor | Dome under repair in 1992 | astroweb | Greenwich, London, England | Old Royal Observatory | 51° 29' N | Gmbh | visual refractor | ambient | 47 m | English equatorial telescope | Greenwich refractor | f/11.9 | 0.711 m | English equatorial | doublet | Ransomes and Sims | 00° 00' | 1894 |
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