John Irwin Slide Collection

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Alto El Toro, Chile
Alto El Toro, Chile
"Lick" double 20 telescope at Leoncio, Argentina
"Lick" double 20 telescope at Leoncio, Argentina
10-inch Mt. Wilson telescope at Las Campanas Observatory
10-inch Mt. Wilson telescope at Las Campanas Observatory
100-inch basement at Las Campanas Observatory
100-inch basement at Las Campanas Observatory
150' tower at Mount Wilson Observatory
150' tower at Mount Wilson Observatory
40-inch boker-chivens and control panels at the Las Campanas Observatory
40-inch boker-chivens and control panels at the Las Campanas Observatory
40-inch boker-chivens at the Las Campanas Observatory
40-inch boker-chivens at the Las Campanas Observatory
40-inch boker-chivens at the Las Campanas Observatory
40-inch boker-chivens at the Las Campanas Observatory
A "party" at Cerro Tololo Inter-American Observatory (CTIO)
A "party" at Cerro Tololo Inter-American Observatory (CTIO)
A 100-inch dish at Villa Elisa
A 100-inch dish at Villa Elisa
A 27-inch telescope located at the Lamont-Hussey Observatory
A 27-inch telescope located at the Lamont-Hussey Observatory
A 36-inch foundation under construction at Kitt Peak National Observatory
A 36-inch foundation under construction at Kitt Peak National Observatory

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