A Cassegrain reflector
it is a reflector telescope
Arecibo hosts the largest radio telescope in the world, filling a mountain valley in Puerto Rico. Perhaps you saw it pictured in the James Bond movie "Goldeneye".
A reflecting telescope only uses lenses in the eyepiece. Light is picked up and an image produced by using a concave parabolic mirror.
refracting
No: Galileo's telescope was a Galilean refractor, which is to say it has a single large object lens at the top end and a concave eye lens at the other end. This is not a popular type of telescope now because it has a small field of view, and it is only used for cheap telescopes and opera glasses.
The James Webb telescope.
The James Webb Space Telescope is an infrared telescope, designed to observe objects in the infrared spectrum. It covers a range of wavelengths from about 0.6 to 28 micrometers.
At this time (early 2014), the James Webb Space Telescope is scheduled to launch during October of 2018 .
June 2014
Space exploration paved the way for the development of the James Webb Space Telescope by providing valuable experience in building and operating space-based observatories. Technologies and techniques developed for previous missions, such as the Hubble Space Telescope, have been applied to the design and construction of the James Webb Space Telescope. Additionally, insights gained from exploring our solar system and beyond have informed the science goals and objectives of the James Webb Space Telescope.
The Hubble Space Telescope will be successed by the James Webb Space Telescope
The successor of the HST shall be the James Webb Space Telescope (JWST).
infrared radiation
infrared radiation
The James Webb Space Telescope (JWST) is set to replace the Hubble Space Telescope and is scheduled to launch in 2021. The JWST will be the most powerful space telescope ever built and will study the universe in infrared wavelengths to observe objects that are difficult to see with other telescopes.
It is not sure yet. But NASA has predicted the date to be as between 2014 and 2015.
If you're eager to stay abreast of the groundbreaking discoveries made by the James Webb Space Telescope, look no further than JamesWebbDiscovery dot com . This website serves as the ultimate resource for tracking the awe-inspiring revelations of the James Webb Space Telescope in a seamless, chronological order.