Full [Earthporn] Mt. Washington Observatory, NH [2048x1536]Pict. 2048×1536 px
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Full Mount Wilson, California. Hooker Telescope at Mount Wilson Observatory - interior view of 100-inch telescope and machinery (1920Pict. 799×738 px★ 12154 pts. ♥ 0 likes ⬇ 5 saves
Full Mount Wilson, California. Solar Tower Telescope at Mount Wilson Observatory - exterior view from road (1920-1940).2143Pict. 799×751 px★ 11283 pts. ♥ 0 likes ⬇ 6 saves
Full Mount Wilson, California. Hooker Telescope at Mount Wilson Observatory - exterior of dome (1920-1940).2144Pict. 799×738 px★ 11258 pts. ♥ 0 likes ⬇ 4 saves