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Eighteen-day moon The moon rises later each evening now. That means a late night for sketchers. Luckily my small 70mm Televue Ranger on a telepod mount requires no setup. I keep it permanently set up in the garage. The features I’ve sketched on the 18-day moon begin with sunset on Mare Crisium – on the terminator [...] Galileo noted a fixt star (at left), now known to be Neptune on this sketch from December 28, 1612 Skymap Pro chart of Jupiter and Neptune (the square at left), December 28, 1612 My sketch of Neptune with Jupiter and the Galilean moons Galileo made the first recorded observation of Neptune in 1612 when Neptune [...] fourteen-day (full) moon The full moon rises as the sun sets on the 14th day of the lunar month. A small telescope, such as the 70mm f.8.7 Televue Ranger I’m using for this series of sketches is a perfect instrument for full moon viewing. So are binoculars. The moon is [...] Galileo’s Head of Orion cluster Jane’s Head of Orion cluster Astrophoto of Orion Head cluster by Morris Jones Map of the constellation Orion Galileo looked at the fuzzy patch surrounding the head of Orion through a telescope, and resolved many starts not previously known. He called it Nebulosa Orionis. Look between the shoulder stars Betelgeuse and [...] Galileo’s drawing my drawing my sketch of Jupiter’s rotation Galileo published his observations in Sidereus Nuncius in March 1610: “On the 7th day of January in the present year, 1610, in the first hour of the following night, when I was viewing the constellations of the heavons through a telescope, the planet Jupiter [...] nine-day moon Lunar creature features Rabbit on the full moon Night owls can enjoy the nine-day moon – it’s up all night long. In my sketch, the magnificent crater Copernicus is visible on the sunlit side of the terminator – on the right side of the lunar center. It looks so insignificant right now, but [...] three-day old waxing moon This year, my observing project is to recreate as many of Galileo’s original telescopic observations as I can. I’ll be using my smallest telescope, a 70mm refractor, and making my sketches using a 25mm eyepiece for a magnification of 19x. Each of my lunar sketch pages will each show three [...] Galileo's sunspots My sunspots In the summer of 1612, Galileo sketched a series of sunspots which were published in Istoria e Dimostrazioni Intorno Alle Macchie Solari e Loro Accidenti Rome, (History and Demonstrations Concerning Sunspots and their Properties), in 1613. Galileo corresponded with other scientists and artists who also were sketching the [...] Galileo’s Trapezium My Trapezium sketches
Galileo’s observed the Trapezium stars in the sword of Orion on February 4, 1617. He labeled the three stars “c”, “g”, and “i”. These stars are known now as the “D”, “C” and “A” components of Theta 1 Orionis, or 41 Orionis. He did not see the fainter [...] Galileo telescope replica and my TV Ranger Galileo's 1609 telescope There were separate housings at either end for the objective and the eyepiece When I started thinking about how to integrate International Year of Astronomy into my 2009 What’s Up podcasts I naturally focused on Galileo’s first observations through a telescope 400 years [...] |
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Copyright © 2012 Jane Houston Jones - All Rights Reserved |
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