Pole Star Sight with Cross-staff, 1545

Numéro d’image : 12631155
Pole Star Sight with Cross-staff, 1545
Colorized drawing of a man siting a pole star with a cross-staff. The cross-staff consisted of a long staff with a perpendicular vane which slides back and forth upon it. Navigational angles are measured by holding it so the ends of the vane are level with the points to be measured. A pole star is a visible star that is aligned with the Earth's axis of rotation and lies directly overhead when viewed from the Earth's North Pole or South Pole. In practice, the term Pole Star usually refers to Polaris, which is the current northern pole star, also known as the North Star. Early in the sixteenth century it was used as a seaman's navigational instrument.
Licence : Droits gérés
Crédit: Science Photo Library / Science Source
Taille de l’image : 3570 px × 3802 px
Model Release : Non requis
Property Release : Non requis
Restrictions : -

Prix pour cette image À partir de 45 €

Produit vendu
(Calendrier, Carte postale, Carte de vœux, Impression sur textile, Packaging etc)
À partir de 45 €
Usage commercial
(Affichage, Annonce presse, Annonce TV, Carte, Digital - hors rés. sociaux, Digital - rés. sociaux etc)
À partir de 45 €
Éditorial
(Digital, Journal, Livre, Livre pratique, Magazine, Télévision etc)
À partir de 60 €
Usage non-commercial
(Digital - hors rés. sociaux, Digital - rés. sociaux etc)
À partir de 120 €

Mots clés

;