Herschel's 10-foot telescope

Numéro d’image : 11879859
Herschel's 10-foot telescope
Herschel's 10-foot telescope,artwork. This telescope was designed by the German-born British astronomer William Herschel (1738-1822). The tube was 10 feet (3 metres) long,but was smaller than the larger 20-foot and 40-foot models. It is mounted on a wheeled frame so that it can be moved to point in the right direction,and various mechanisms allow the angle to be adjusted as needed. The observer would use a ladder to make observations by looking down an eyepiece on the side of the tube (upper left) at an image that was projected to the side by the primary mirror in the bottom of the tube. The mirror was made of polished metal,instead of glass. This was one of more than 400 telescopes designed and built by Herschel,whose discoveries included Uranus (1781) and several moons of Saturn and Uranus
Licence : Droits gérés
Crédit: Science Photo Library / Royal Astronomical Society
Taille de l’image : 4841 px × 4043 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

;