Star-land; being talks with young people about the wonders of the heavens (1899)
Ball, Robert Stawell, Sir, 1840- [from old catalog] · Boston and London, Ginn & company · leaf 108
Fig. 36.— The Dome at Dunsiuk Observatory. actual amount, yet still that third is a very consid-erable distance. One-third of 240,000 is 80,000, sothat we can see the moon no better with a binocular A CONVENIENT INSTRUMENT. 95 than Ave should see it were it 80,000 miles away, andwere we viewing it… … Fig. 37. — The Equatorial at Dunsink Observatory. more on the subject in a later lecture; at present 1only describe that form of instrument which is mostconvenient for studying the moon. I take as an illus-tration the South Equatorial at Dunsink Observatory,which belongs to Trinity College, Dublin.…
Astronomy
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