Affichage de 16 résultats
Description archivistique
Remove filter:
S. Horace Draper Collection
Remove filter:
Buildings-Public
Remove filter:
Avec objets numériques
Dominion Astrophysical Observatory in winter
Dominion Astrophysical Observatory in winter
Dominion Astrophysical Observatory in operation
Dr Plaskett with completed telescope, Dominion Astrophysical Observatory
Workers resting after completing telescope, Dominion Astrophysical Observatory
Telescope complete, Dominion Astrophysical Observatory
Cross pieces added to the polar axis, Dominion Astrophysical Observatory
Polar axis in place attached to piers, Dominion Astrophysical Observatory
Raising the polar axis on stacked four-by-fours, Dominion Astrophysical Observatory
Polar axis ready to raise to pier, Dominion Astrophysical Observatory