Teach Astronomy - Reflecting Telescopes

refractor telescopes video

	Teach Astronomy - Reflecting Telescopes www.teachastronomy.com Essentially all modern telescopes used by research astronomers are reflecting telescopes. They use mirrors to bend, deflect, and focus light to form an image. The first reflecting telescope was perfected by Isaac Newton, and reflecting telescopes of larger and larger aperture have been produced ever since. Edwin Hubble discovered the distant nature of galaxies and the expansion of the universe using the largest reflecting telescope at the time just outside Los Angeles. For several decades the largest reflector was the 200-inch or 5-meter diameter telescope at Mount Palomar. The Russians built a 6-meter telescope in the 1970s. Currently the largest single mirror telescopes are just over 8-meters in diameter. The advantage of a reflecting telescope relative to a refractor is that the mirror can be very large and thin because the light is only reflected from the front surface. A reflector also reflects all the waves of light by equal amounts, and so the images that are formed have no chromatic aberration. The two slight disadvantages of reflecting telescopes are that the mirror's surface is exposed to the elements and must be occasionally recoated and the fact that since the light is focused in front of the mirror, some of the light must be blocked by a secondary or by a detector to gather the light.	From: astropedia Views: 30 0 ratings
	Time: 01:33	More in Education

refractor-telescopes

Tools of Astronomy Song

reflecting telescopes video

	Tools of Astronomy Song Tools of Astronomy Song.Here is a song I created to help my 6th grade students study. I hope you enjoy. It's been 26 really long years No days of torture but he was bitter Galileo was forced to stay home Because he made better telescopes with more power La, la, la, the inquisition, la, la, la, not geocentric, la, la, la oh well, la, la, la Look at the sky tonight, tonight At observatories on top of the world Tonight, satellites, are dancing on edge of the atmosphere Telescopes could be reflecting, radio or refracting Making light, more bright, of the sky, tonight He saw that Jupiter had many moons Was able to see Saturn, Milky Way has many stars Surface of the moon was not so smooth Thanks Galileo Galilei La, la, la, whatever, la, la, la, heliocentric, la, la, la, oh well, la, la, la Look at the sky tonight, tonight At observatories on top of the world Tonight, satellites, are dancing on edge of the atmosphere Telescopes could be reflecting, radio or refracting Making light, more bright, of the sky, tonight You got me singing like Whoa, come on, ohh, it's all matter, whoa, everybody now, ohh Telescopes reflecting use mirrors Keep the light up and shoot it on down But refracting use convex lenses Focus the light to the eyepiece lens Radio detects low vibration Focus the waves from far outer space Satellites can see UV, x-rays Gamma rays in the atmosphere And a spectrograph breaks the light down and it Splits the colors to show what's around and Temperature and chemical <b>...</b>	From: ParrMr Views: 8390 30 ratings
	Time: 03:18	More in People & Blogs

reflecting-telescopes

Reflecting Telescopes Function

reflecting telescopes video

	Reflecting Telescopes Function Emily Howard ASSISTANT PROFESSOR Natural Science Central Campus Broward Community College Teaching Credentials : Master Of Science Physics Florida International University	From: ExpertHowTos Views: 1127 7 ratings
	Time: 01:51	More in Howto & Style

reflecting-telescopes

Reflecting Telescopes - TOP 10 Best to Buy

reflecting telescopes video

	Reflecting Telescopes - TOP 10 Best to Buy Orion SkyQuest XT8 Classic Dobsonian Telescope is.gd Celestron 127EQ PowerSeeker Telescope is.gd Orion SkyQuest XT6 Classic Dobsonian Telescope is.gd Orion SkyQuest XT4.5 Classic Dobsonian Telescope is.gd Meade 90 Az-Adr 90mm A-Series Alt-Azimuth Refractor Telescope is.gd Celestron NexStar 130 SLT Computerized Telescope is.gd Celestron 31045 AstroMaster 130 EQ Reflector Telescope is.gd Celestron 31042 AstroMaster 114 EQ Reflector Telescope is.gd Meade 8-Inch LX200-ACF (f/10) Advanced Coma-Free Telescope is.gd BARSKA 900114 Starwatcher Reflector Telescope is.gd	From: LemuelDBeverly Views: 93 1 ratings
	Time: 02:41	More in Howto & Style

reflecting-telescopes

Physics - Light and Lenses: Mirrors and Optical Instruments

reflecting telescopes video

	Physics - Light and Lenses: Mirrors and Optical Instruments This is the 6th lesson in the series, "Light and Lenses." It describes how reflecting telescopes work and how images are formed in reflecting telescopes. The lesson also evaluates the impact of the SALT project on South Africa. Source: Mindset Network	From: EducationCommonsRW Views: 3826 4 ratings
	Time: 15:09	More in Education

reflecting-telescopes

Types of Telescopes - Refracting & Reflecting.AVI

reflecting telescopes video

	Types of Telescopes - Refracting & Reflecting.AVI This is a brief tour of Tri-County Community College's telescopes: one refracting telescope and the other a reflecting telescope.	From: astro151tccc Views: 1742 4 ratings
	Time: 11:14	More in Education

reflecting-telescopes

Telescopes 2

reflecting telescopes video

	Telescopes 2 difference between refracting and reflecting telescopes. If anyone knows of good video editing programs please let me know.	From: animeangelkitty Views: 307 2 ratings
	Time: 02:37	More in Education

reflecting-telescopes

Reflecting Optical Tracking Telescopes Patrick Air Force Base Florida

reflecting telescopes video

	Reflecting Optical Tracking Telescopes Patrick Air Force Base Florida This is a view of two of the optical tracking telescopes at Patrick Air Force Base, Florida (Eastern Range). Due to the apparent f-length, they appear to be Newtonian, but there is the possibility they are Cassegrain.	From: kh2hbTV Views: 106 0 ratings
	Time: 01:47	More in Science & Technology

reflecting-telescopes

ASTRONOMY

reflecting telescopes video

	ASTRONOMY ASTRONOMY BUTTE REFLECTING TELESCOPES	From: RAPBLAYZ Views: 33 0 ratings
	Time: 04:06	More in Education

reflecting-telescopes