[DOC] [TLE] Newton's reflector - Wikipedia [PAR] Isaac Newton built his reflecting telescope as a proof for his theory that white ... 
He had concluded that the lens of any refracting telescope would suffer from the 
... To create the primary mirror Newton used a custom composition of metal ... 
This unique addition allowed the image to be viewed with minimal... [DOC] [TLE] Newtonian telescope - Wikipedia [PAR] The Newtonian telescope is a type of reflecting telescope invented by the British 
scientist Sir Isaac Newton (16421727), using a concave primary mirror and a... [DOC] [TLE] Reflecting instrument - Wikipedia [PAR] Reflecting instruments are those that use mirrors to enhance their ability to make 
measurements. In particular, the use of mirrors permits one to observe two 
objects ... These were little used or may not have been built or tested extensively. 
... eyepiece at one end and a mirror (D) partway along its length with one 
objective lens... [DOC] [TLE] The addition of these avian features is the main innovation of ... [PAR] Jun 29, 2016 ... video icon  Newton designed one of these that used mirrors in addition to lenses 
# Quiz # Question. 0:29. Amazing Videos. No views... [DOC] [TLE] Telescope Types - Fort Worth Astronomical Society [PAR] Apr 3, 2014 ... A lens at one end of a tube, with the eyepiece and focuser at the other end, on a 
... It uses a convex glass lens (to bend light and bring it into focus. ... These 
defects reduce the overall light gathering ability of the lens by blocking ... Newton 
built his reflecting telescope because he suspected that it could prove... [DOC] [TLE] Combinations of Lenses - Boundless [PAR] If the lenses of focal lengths f 1 and f 2are "thin", the combined focal length f of the 
lenses ... An achromatic doublet is a kind of compound lens designed to bring 
two ... by a lens or mirror, of rays of light emanating from one and the same point, 
... The combination of an objective lens 1 and some type of eyepiece 2 is used to
... [DOC] [TLE] Telescopes 101 [PAR] The answer to both of these questions is given by the size of the main optical ... 
The 7x50 design is the one most typically used by seasoned star-hoppers. ... in 
more expensive models by the addition of more complicated lens elements. ... 
than the amateur production of the reflecting mirrors used in other telescope 
designs. [DOC] [TLE] Keck Revolution in Telescope Design Pioneered at Lawrence ... [PAR] The unique mosaic design of the Keck Telescope primary mirror consists of 36 
hexagonal ... in fundamental optical telescope design since the days of Sir Isaac 
Newton. ... mirror segments, so developing a system that could compensate for 
these .... mirrors that can be used on the Keck telescope--one for optical studies 
and... [DOC] [TLE] It takes more than one kind of telescope to see the light | Science ... [PAR] Apr 20, 1999 ... So why haven't scientists created a telescope designed to look at ... The lenses 
bent, or refracted, the light as it passed through the glass and thus ... Yet another 
bonus of Newton's reflecting telescope is that it can also be used to ... job that 
telescopes designed to detect these portions of the electromagnetic... [DOC] [TLE] telescope facts, information, pictures | Encyclopedia.com articles ... [PAR] The following year, Galileo Galilei built the first astronomical telescope from a 
tube ... Thus, a 0.8 in (2 cm) focal length eyepiece used in conjunction with a 39 
in (100 ... Third, the objectives can be made very large since there is only one 
optical ... Catadioptric telescopes use a combination of lenses and mirrors in 
order to... [DOC] [TLE] Text - James Webb Space Telescope [PAR] The angled secondary mirror, near the eyepiece, reflects the light to where it ... 
Newton's design is what you see here, which is why this is called a ... Just click 
your mouse on the part of the drawing that you think might be one of these 7 
components. ... The Webb has star trackers that are used to coarsely point the 
telescope. [DOC] [TLE] OPTICS AND TELESCOPES [PAR] Lenses and Mirrors

Question: Newton designed one of these that used mirrors in addition to lenses
Answer: telescope