Are You Looking For? The Light gathering Power of a... In 1675 Roemer Measured the Speed... Visible Light Occupies Which Positio... How Does a Refracting Telescope... Who Invented the Refracting Telescope... How to Make a Refracting Telescope... Refracting Telescope History Parts of a Refracting Telescope...	1. Brannel Astronomy The secondary mirror, set at a 45° angle to the telescope's optical axis, ... Must use a 2 element... http://www.brannelastronomy.com/articles/telescope guide.htm (Google,Ask.com) 2. Telescope, designs and their optical layout The main advantage of the refracting telescope is that, unlike the other designs ... they are often... http://www.seeviewo.org/seeview/astronomy/articles/telescopes.htm... (Google,Yahoo! Search) 3. Parkers Photographic Telescopes In the refracting telescope (a) light is collected by a 2 element objective lens and brought to a focus... http://www.bulletsolutions.co.uk/parkers/teleinfo.htm (Google,Ask.com) 4. Refracting telescope Wikipedia, the free encyclopedia ... is a dioptric telescope that uses a lens as its ... Main article: History of the telescope. Refractors... http://en.wikipedia.org/wiki/Refracting_telescope (Yahoo! Search) 5. I. R. Poyser Telescopes Brass refractors Our brass refracting telescopes benefit from being used on a mount and a tripod ... The finder telescope... http://www.irpoyser.co.uk/refractors.php (Google) 6. refracting telescope: Definition from Answers.com ... is a dioptric telescope that uses a lens as its ... Main article: History of the telescope. Refractors... http://www.answers.com/topic/refracting telescope (Yahoo! Search) 7. Astronomy Telescopes Which Type Is Right For You? | Supporting ... 8 Jun 2007 ... Refracting telescopes use a main lens made from glass and called the objective ... using... http://iya2009.com/astronomy telescopes which type is right for yo... (Google) 8. Telescope Wikipedia, the free encyclopedia ... to a computer, telescopes work by employing one or more curved ... There are three main types: The... http://en.wikipedia.org/wiki/Telescope (Yahoo! Search) 9. Telescope The most common type is the optical telescope. Other types also exist and are listed below. ... The refrac... http://schools wikipedia.org/wp/t/Telescope.htm (Yahoo! Search) 10. 1.1 A milestone in the advancement of astronomy Telescopes and ... In any telescope, the optical element that gathers the incoming light is variously ... A subsequent... http://openlearn.open.ac.uk/mod/resource/view.php?id=229177 (Google) 11. 3es Content Update Scheme of Work for Edexcel Entry Level Science Unit 9 Electricity: Its Production and Uses ... Support... http://www.clickscience.com/main.asp?pid=73 (Ask.com) 12. Meade Instruments Corporation How Telescopes Work Refracting Telescopes use a large objective lens as their primary light collecting element. ... Note... http://www.meade.com/support/telewrk.html (Yahoo! Search) 13. 3es Existing Content Detailed element cards An informative and detailed look at elements with atomic numbers 1 to 20 with... http://www.clickscience.com/main.asp?pid=74 (Ask.com) 14. BBC h2g2 Telescopes 20 Dec 2000 ... There is another type of reflector, known as a Cassegrain reflector, which is used... http://www.bbc.co.uk/dna/h2g2/A397316 (Google) 15. A Telescope gathers and focuses visible light and other ... An optical telescope gathers and focuses visible light and other electromagnetic radiation. ... Main... http://www.newuniverse.co.uk/Telescope_print.html (Ask.com) 16. Telescope ... the type of telescope they have, and draw a schematic diagram showing the main optical ... The telesco... http://www.physics.usyd.edu.au/super/physics_tut/activities/Waves_... (Yahoo! Search) 17. The Sun is the star of our solar system Its spectrum contains lines of ionized and neutral metals as well as very weak hydrogen lines. The "V"... http://www.newuniverse.co.uk/sun.html (Ask.com) 18. Refracting telescope A refracting or refractor telescope is a type of optical telescope that refracts ... Refracting telescopes... http://articles.gourt.com/en/refracting%20telescope (Yahoo! Search) 19. eBay.co.uk Guides Choosing the Right Telescope 10 Jul 2008 ... A refracting or refractor telescope is a dioptric telescope that uses a lens as its... http://reviews.ebay.co.uk/Choosing the Right Telescope_W0QQugidZ10... (Google) 20. Beginners Guide to Astronomy The reflecting telescope, on the other hand, uses specially curved mirrors to gather and focus the light... http://www.pulsar optical.co.uk/beginners guide to astronomy.html... (Ask.com)