11/9/2023 0 Comments Galileo telescope observationsThere are three possible reasons for this. In our final observation on April 25, we were able to clearly distinguish the shape of Venus in a modern sixteen power telescope, but not in the Galilean telescope. All through the semester, we have seen Venus in the sky, but we could not determine what the phase was. Results: Unfortunately, at this point, we have not been able to unambiguously assert that we have observed any the phases of Venus in the Galilean telescope. This is about what size Venus would be in our telescope at the end of February. 30: 400% Of course it is impossible to see because it is between the Earth and the Sun. 30: 190%Īs a comparison, this is how Venus should appear on June 10, 1996, at its largest. We hope to notice the size of Venus change and, more importantly, we hope to observe the half disk of Venus by the end of the semester. Also shown are depictions of the positions of the inner sphere planets. Galileo observations supported the Copernican system and struck another blow to the scientific underpinnings of the Ptolemaic system.Įxpectations: This is how the size and phase of Venus will change over our observing window this semester. In addition, the Copernican system predicts that Venus will change size as the distance between it and the Earth changes, while the Ptolemaic system places Venus at a fixed distance from the Earth. On the right is the prediction of the Ptolemaic system. On the left is the prediction of the Copernican opinion, with the planet showing phases similar to the Moon. "(Van Helden, p107) The two systems make different predictions for the progression of the phases of Venus (seen below, Van Helden, p.108). Translated: "the mother of love emulates the figures of Cynthia. Haec immatura a me iam frustra leguntur o y is unscrambled to Cynthiae figuras aemulatur mater amorum. Galileo's announcement of his observations of the phase change of Venus was concealed as an anagram in a letter to the Tuscan ambassador of Prague. The results of his observations began to threaten the cosmological system of Ptolemy, while at the same time provide evidence for the plausibility of the Copernican system. In the fall of 1610, Galileo turned his telescope to Venus, which had just become visible after being lost in the sun. Specifically, we would like to observe the phases of Venus and the size increase that Galileo recorded.īackground: In the year 1610 Galileo published his Sidereus Nuncius, a record of his observation of the Moon and Jupiter in 16. We planned to examine the planet with a telescope similar to Galileo's and compare our results with what he observed in the fall of 1610. We observed the planet Venus to complement our observations of the Moon, Jupiter and its satellites, Orion and the Pleiades. The astronomy group for Hist 333 is composed of Rebecca Brown, Travis Dunn, Karl Haushalter, and Jessica Williams. ![]() Galileo Astronomy Group:Venus Astronomy Group 1996 Project Web Page
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