Comet
Date
1807
Creator
Unknown, Engraver
After
William Walker (1761 - 1816, British) , Astronomer
Object type
Library reference
9183
Material
Technique
Dimensions
height (print): 210mm
width (print): 128mm
width (print): 128mm
Subject
Description
Two astronomical studies of the Great Comet of 1807 (C/1807 R1), at different magnifications.
The accompanying article states that the author: ‘viewed it with a 7-foot Newtonian reflector of 6 ¼ inches aperture, with magnifying powers from 90 to 500 times; with a Cassegrain telescope of larger size; with an excellent achromatic of Mr. Dollond: but its effect is best by a good night glass magnifying about six of eight times…I herewith send the sketched I made this evening (Plate II): the first from the night glass, the second from the Newtonian reflector magnifying ninety times.’
Plate 2, illustrating the report: ‘New Comet…[including a letter by] W.Walker’. The Philosophical Magazine…[edited] by Alexander Tilloch, v.29, (1807-1808) pp.90-93.
Inscribed above: ‘Philo. Mag. Pl.II Vol.XXIX’.
William Walker (bap.1766-1816), British astronomical lecturer was the son of Adam Walker (1730/31-1821), British itinerant lecturer and writer.
The accompanying article states that the author: ‘viewed it with a 7-foot Newtonian reflector of 6 ¼ inches aperture, with magnifying powers from 90 to 500 times; with a Cassegrain telescope of larger size; with an excellent achromatic of Mr. Dollond: but its effect is best by a good night glass magnifying about six of eight times…I herewith send the sketched I made this evening (Plate II): the first from the night glass, the second from the Newtonian reflector magnifying ninety times.’
Plate 2, illustrating the report: ‘New Comet…[including a letter by] W.Walker’. The Philosophical Magazine…[edited] by Alexander Tilloch, v.29, (1807-1808) pp.90-93.
Inscribed above: ‘Philo. Mag. Pl.II Vol.XXIX’.
William Walker (bap.1766-1816), British astronomical lecturer was the son of Adam Walker (1730/31-1821), British itinerant lecturer and writer.
Associated place