Learning Resources EI-5129 GeoSafari Jr My First Telescope, Toy Telescope for Kids, STEM Toy, Ages 4+

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Satterthwaite, Gilbert (2002). "Did the reflecting telescope have English origins?". The Digges Telescope . Retrieved 25 January 2012.

My First Telescope - Brainstorm Ltd My First Telescope - Brainstorm Ltd

The VX8 is affordable system, and with the rolled aluminium tube weighing 7kg and measuring just 86cm long, many will find We performed some astrophotography tests with the telescope and found no evidence of unwanted reflections or artefacts, while a star test showed that the lens cell holds the glass without skewing or pinching, even despite drops in temperature greater than 10°C. I have room for it in my flat. The only thing what would be a little problematic is to watch something out of my window (4th floor) but I think I can manage something to have it at the needed height to gaze outside my window. Also if your budget is tight, bear in mind you will probably decide to add one or two eyepieces & maybe a Barlow lens to get the most out of the scope.

A grab and go’ simple setup may best suit your needs, or you may want more complicated equipment with fully automatic operation to reveal more wonders of the night sky. Reflecting telescopes: Newtonian, two- and three-mirror systems". Telescope-optics.net . Retrieved 2013-08-01.

My First Telescope - National Trust

In 1845 William Parsons, 3rd Earl of Rosse built his 72-inch (180cm) Newtonian reflector called the " Leviathan of Parsonstown" with which he discovered the spiral form of galaxies. This can be turned freely around, while the telescope can pivot up and down and thus be pointed anywhere in the sky. Hi! Alex, both can show you the ring of Saturn but at 40x (10mm EP with the Travelscope 70), Saturn will be a bit tiny. 65x (10mm EP wtih the Heritage 130) is more appropriate. a b "The First Telescopes", Cosmic Journey: A History of Scientific Cosmology, Center for History of Physics, a Division of the American Institute of Physics The first record of a telescope comes from the Netherlands in 1608. It is in a patent filed by Middelburg spectacle-maker Hans Lippershey with the States General of the Netherlands on 2 October 1608 for his instrument " for seeing things far away as if they were nearby". [12] A few weeks later another Dutch instrument-maker, Jacob Metius also applied for a patent. The States General did not award a patent since the knowledge of the device already seemed to be ubiquitous [13] [14] but the Dutch government awarded Lippershey with a contract for copies of his design.

In fact the views offered by a relatively modest reflector can compare favourably with those offered by expensive refractors. Although some detail and moons may be seen when observing Jupiter and Saturn, in either case the planet itself will appear quite small and very bright in the view. No further practical advance appears to have been made in the design or construction of the reflecting telescopes for another 50 years until John Hadley (best known as the inventor of the octant) developed ways to make precision aspheric and parabolic speculum metal mirrors. In 1721 he showed the first parabolic Newtonian reflector to the Royal Society. [60] It had a 6-inch (15cm) diameter, 62 + 3⁄ 4-inch (159cm) focal length speculum metal objective mirror. The instrument was examined by James Pound and James Bradley. [61] After remarking that Newton's telescope had lain neglected for fifty years, they stated that Hadley had sufficiently shown that the invention did not consist in bare theory. They compared its performance with that of a 7.5 inches (190mm) diameter aerial telescope originally presented to the Royal Society by Constantijn Huygens, Jr. and found that Hadley's reflector, "will bear such a charge as to make it magnify the object as many times as the latter with its due charge", and that it represents objects as distinct, though not altogether so clear and bright. [62]