The Wilna Photo-heliograph
Numéro d’image : 11946681
| Detail of the photo-heliograph built for the Wilna (Vilnius) Observatory in Russia that was manufactured in 1864 by the London optical instrument maker Thomas Dallmeyer to a design by the English astronomer Warren de la Rue. After Sir John Herschel had advocated in 1857 the importance of making a daily photographic record of sunspots,the Royal Society granted support to de la Rue to design and produce a suitable instrument. The first was successfully operated at Kew from 1861. Five additional photo heliographs were made by Dallmeyer for use in observing the transit of Venus in 1874. Here,the motorised equatorial mount is shown with a section of the telescopic tube fitted with an objective of four-feet focal length that was followed by an ocular lens for projecting a magnified primary image onto the sensitised wet collodion plate | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Terry, Sheila |
| Taille de l’image : | 3896 px × 4885 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 €