Credit: © The Royal Society
Image number: RS.9605
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“Black drop” effect during the 1769 Transit of Venus
Date
12 June 1769
Creator
William Hirst (British) , Astronomer, Astronomer
Object type
Archive reference number
Material
Technique
Dimensions
height (print): 181mm
width (print): 109mm
width (print): 109mm
Subject
Content object
Description
Views of the teardrop effect observed during transit as Venus is near the solar edge. Four figures of the event seen by Hirst using a 2-foot long reflecting telescope to x55 magnification. Inscribed in ink above “XI p.229”. Not signed.
The illustration corresponds to figures 5-8 on plate 10 and 11 of the published paper “Account of several phaenomena observed during the Ingress of Venus into the solar disc” by William Hirst, Philosophical Transactions of the Royal Society, vol.59 (1769) pp.228-235. However, there are no numbered figures on this print, in the manner of the Transactions version.
The illustration corresponds to figures 5-8 on plate 10 and 11 of the published paper “Account of several phaenomena observed during the Ingress of Venus into the solar disc” by William Hirst, Philosophical Transactions of the Royal Society, vol.59 (1769) pp.228-235. However, there are no numbered figures on this print, in the manner of the Transactions version.
Associated place