Clearest picture of Jupiter, from Earth. Isn't she beautiful? Actually hundreds of photos taken by the Gemini North Telescope in Hawaii, compiled to produce the infrared snap in order to see beyond Jupiter’s hazy atmosphere.
The Observatory of Alexandria with an astronomer measuring the heavens with some instruments (cross staff, mariner’s astrolabe) which actually belong to a much later period (source: Camille Flammarion, L’Astronomie Populaire: Description générale du ciel, Paris: 1880).