Photograph of the emission nebula, Eta Carina (24 hour...
Photograph of the emission nebula, Eta Carina (24 hour exposure), 1909.
One of nineteen photographs from the Royal Observatory, Cape of Good Hope, South Africa, showing a view of the emission nebula, Eta Carina. A 24 hour exposure taken with the Astrographic Telescope by Howard Grubb made for the 'Carte du Ciel' photographic sky survey.