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infrared telescope advantages and disadvantages

    infrared telescope advantages and disadvantages

    Communication is more difficult surely. [4], Placing infrared telescopes in space completely eliminates the interference from the Earth's atmosphere. Webadvantages of hubble space telescope over ground based ones; 29. Later, when the satellite reaches apogee, another burn might be performed to raise perigee a bit (but not a whole lot). WebInfrared light is scattered less by dust than shorter wavelengths of visible light so we can actually peer through dusty nurseries and observe new stars and their new planetary They contain an infrared camera with a special solid-state infrared detector which must be cooled to cryogenic temperatures.[3]. Can I use my Coinbase address to receive bitcoin? circuitry, Simple circuitry: no special or proprietary hardware is This is very important for infrared telescopes, as heat radiation acts as interference to measurements. Webincluding wavelength and frequency, and infrared radiation and spectra. Earths stratospheric ozone layer Thanks a lot David! The fourth telescope, the Deep Survey/Spectrometer Telescope, was directed in an anti-Sun direction. Scenario 1 where an infrared telescope would be placed in the mountains of Hawaii to look for young nebulae. Radio telescopes can be used on earth's surface. increases sky visibility and observation efficiency, New blog post from our CEO Prashanth: Community is the future of AI, Improving the copy in the close modal and post notices - 2023 edition. Space telescopes can detect thesewaves. You also need to have the appropriate infrared client How does spectrometry detect the electromagnetic spectrum? LEO is probably the most expensive of all alternatives in terms of attitude maintenance. In space, however, telescopes are able to geta clearer shot of everything from exploding stars to other galaxies. In this Wikipedia article about the list of space telescopes to be launched (which I assume is exhaustive), of the 11 telescopes yet to be launched, 6 will be positioned at the Sun-Earth L2 Lagrange point. What is spectroscopy? Please refer to the appropriate style manual or other sources if you have any questions. WebWhat are the advantages and disadvantages of having telescopes in space? Language links are at the top of the page across from the title. Some tests may require a subject to be bathed provides more accurate results. It's about half as big as a 737 aircraft. What is infrared advantages and disadvantages? Since then, aircraft like the Kuiper Airborne Observatory (KAO) have been adapted to carry infrared telescopes. - Delta-V requirements low (2-4 m/s per year). The Hubble Space Telescope (HST) can also serve as an ultraviolet telescope. The following are lists of devices categorized as types of telescopes or devices associated with telescopes. More expensive than a Newtonian of comparable aperture 2. List the advantages and disadvantages of each scenario, which telescope would be better? One of the most significant infrared telescope projects was the Infrared Astronomical Satellite (IRAS) that launched in 1983. Has depleted uranium been considered for radiation shielding in crewed spacecraft beyond LEO? Language links are at the top of the page across from the title. Telescopes in space are able to operate twenty-four hours a day, free of both Earth's day-night cycle as well as clouds and other weather conditions that can hamper observing. leave, thus improving efficiency. These include. The Hubble is proof of that. How many minutes does it take to drive 23 miles? The combination of the mirrors and filters was selected to maximize the telescopes sensitivity to detect faint EUV sources. The Earth isn't as big (compared to LEO), but it's still large compared to other alternatives. Hubble's aperture (the part capable of receiving light) is 2.4 metres across. Why are telescopes positioned in Lagrange points? This question might receive better answers on Space Exploration.SE. This alone is a huge advantage. Other important ultraviolet space observatories include the Galaxy Evolution Explorer (GALEX), which was launched in 2003 and observes between 140 and 280 nm. Advantages and disadvantages of infrared? They expand our research options. Getting above the distorting effects of the atmosphere is also an advantage at visible and Infrared wavelengths. Astronomy Stack Exchange is a question and answer site for astronomers and astrophysicists. 1. WebList of optical telescope types. How does an infrared telescope work and what are some class 12 physics CBSE. This excludes Earth observation satellites, satellites that monitor the Sun, and satellites sent to another planet to observe that other planet as "space telescopes". A brief review of the IR sky and astronomical sources of infrared is followed by consideration of the advantages and disadvantages of IR astronomy, and problems from atmospheric absorption of infrared radiation. density matrix, Embedded hyperlinks in a thesis or research paper, Checking Irreducibility to a Polynomial with Non-constant Degree over Integer. software installed on both computers. Later, when the satellite reaches geostationary altitude, another burn is performed to raise perigee to geostationary altitude. WebThe ability to see warm (as opposed to hot) objects. Explanation: So we have to send them to earth orbit above our Ultraviolet radiation has wavelengths of about 400 nanometres (nm) on the visible-light side and about 10 nm on the X-ray side. Finding Hazardous Asteroids Using Infrared and Visible Wavelength Telescopes explores the advantages and disadvantages of infrared (IR) technology and visible wavelength observations of NEOs. Instruments with a fork mount can be set up extremely rapidly, 1. I can already hear your objection: that if you just spent enough money on it, you could Some telescopes are classified by the task they perform; for example Solar telescopes are all designs that look at the Sun, Dobsonian telescopes are designed to be low cost and portable, Aerial telescopes overcame the optical shortcomings of 17th-century objective lenses, etc. This is absolutely not a duplicate of the other question. How to combine independent probability distributions? A catadioptric telescope is an optical system that is optimized for producing images of objects at an infinite distance, incorporating both refractive optics (lenses) and reflective optics (mirrors). When the ultraviolet light from hot stars in very distant galaxies finally reaches us, it What does ultraviolet light from hot stars in very distant galaxies reaches us in the form of? lol. An infrared telescope is a telescope that uses infrared light to detect celestial bodies. This type of You can connect a PC to a Laptop via infrared by ensuring that The main reason space telescopes are placed in an L2 orbit is because L2 is a stable thermal environment. Radio telescopes can be used on earth's surface. One is to view objects in space, as commanded from the Earth. Another disadvantage for ground-basedtelescopes is that the Earth's atmosphere absorbs much of the infrared andultraviolet light that passes through it. 1) Infrared transmission requires minimum power to operate and can be set up at a low cost. Copy. For example JWST, one of the infrared telescopes, has to cools some of it's detectors to 7 kelvin to operate properly. around the world. Somewhat expensive in terms of launch V. There are many types of telescopes, the more popular ones being x-ray telescope, ultraviolet telescope, Infrared light is one of several types of radiation present in the electromagnetic spectrum Viewing is always comfortable 5. - Ease of communication What does "up to" mean in "is first up to launch"? FUSE was just one telescope with a spectrometer designed to study the far-ultraviolet region. They can go through these The Far Ultraviolet Spectroscopic Explorer (FUSE) observed the universe in far-ultraviolet light (wavelengths between 90.5 and 119.5 nm) from 1999 to 2007. List of telescope types working outside the optical spectrum, Learn how and when to remove this template message, Gregory (Spot) MaksutovCassegrain telescope, Sub-aperture corrector Maksutov-Cassegrain telescope, List of largest optical reflecting telescopes, https://en.wikipedia.org/w/index.php?title=List_of_telescope_types&oldid=1092769239, Short description is different from Wikidata, Articles lacking sources from December 2013, Creative Commons Attribution-ShareAlike License 3.0, This page was last edited on 12 June 2022, at 13:26. 6903 views Very practical handling 3. WebWebb also has a much bigger mirror than Hubble. You can build a larger observatory on the ground than you can in space. This, and to a much less extent, geosynchronous orbits, are the only alternatives where debris poses a threat. The satellite is injected into a highly eccentric orbit shortly after launch. It also The wavelength of visible light is about 0.4m to 0.7m, and 0.75m to 1000m (1mm) is a typical range for infrared astronomy, far-infrared astronomy, to submillimetre astronomy. signals from other devices. In 1967, infrared telescopes were placed on rockets. Web2 architectural structures, while at the same time reflecting the most recent political science contributions in ethical security studies and security cosmopolitanism. other. A more recent air-borne infrared telescope to reach the stratosphere was NASA's Stratospheric Observatory for Infrared Astronomy (SOFIA) in May 2010. The only alternatives with a lower launch V are LEO and highly eccentric Earth orbits. What are the advantages and disadvantages of a space based telescope to an earth based one? Is "continuous view of deep space" your answer to "Why are telescopes positioned in Lagrange points?" Advantages: They are ideal for detecting objects that are too cool and hence too faint to be observed under visible light. Short length2. Data was transmitted to the ground station at the end of each observing tour and examined immediately on a television monitor. 2014-08-21 18:52:54. This is the cheapest of all alternatives in terms of launch V. Then you could explain its working. Remote controls, short range data transfer, and heat are a few Is it possible to at least briefly mention "some of the benefits in general terms" from your space.com link to minimize link-onliness? This is why an optical telescope would be unable to see a star enshrouded in dust, Each has its advantages and disadvantages, which is why all three are manufactured currently. Later, when the satellite reaches apogee, another burn is be performed that raises perigee by a large amount. Is there a Lagrange point between the earth and the moon? WebA major advantage of infrared spectroscopy is that the samples being viewed don't require any sort of special preparation. Da nicht geschlossen, sind thermische Luftstrmungen mglich, die die Abbildung beeintrchtigen. The Athena xray telescope could be placed in a L1 Halo orbit, indicating the thermal difference between the sides isn't that big. 1. While every effort has been made to follow citation style rules, there may be some discrepancies. Our editors will review what youve submitted and determine whether to revise the article. ultraviolet telescope, telescope used to examine the ultraviolet portion of the electromagnetic spectrum, between the portion seen as visible light and the portion occupied by X-rays. Did the Golden Gate Bridge 'flatten' under the weight of 300,000 people in 1987? Repair / replenishment is possible at this altitude. On whose turn does the fright from a terror dive end? The other main benefit from being in L2 is that being so far away from Earth means that there is a much greater available field of view as the Earth blocks a very minor portion of the sky. Short length 2. product, Higher security: directionality of the beam helps ensure that All celestial objects with a temperature above absolute zero emit some form of electromagnetic radiation. The satellite is injected into an Earth escape orbit shortly after launch. That was the intent; Hipparcos's apogee boost motor failed to fire, so it remains in a geostationary transfer orbit. Viewing is always comfortable5. What does the power set mean in the construction of Von Neumann universe? Do you have pictures of Gracie Thompson from the movie Gracie's choice? The other is communicating with the Earth (receiving commands, relaying observations back to Earth). The second mirror used in the telescope will create a central obstruction. It revealed information about other galaxies, as well as information about the center of our galaxy the Milky Way. X-rays have such high energy that the typical reflecting telescope design used for radio, infrared and optical telescopes cannot be used as the X-rays would just penetrate into the mirror. The mirrors used in these telescopes need to be recoating after a few years in order to function properly. This question asks why they are positioned in Lagrange points while the other one asks about debris collecting. Dives toward perigee typically interrupt operations. Fuel is needed for orbit maintenance as well as for attitude control. Another Earth-orbiting spacecraft, the Extreme Ultraviolet Explorer (EUVE) satellite, which operated from 1992 to 2001, surveyed the sky in the extreme ultraviolet region between 7 and 76 nm. A telescope at L1 would have a continuous view of the Sun and the SOHO satellite is currently there. A spectrograph sensitive to light between 115 and 320 nm was installed on the HST in May 2009. I know this option has been discussed, but I can't find any. How does an infrared telescope work and what are some advantages and disadvantages? Connect and share knowledge within a single location that is structured and easy to search. Adding EV Charger (100A) in secondary panel (100A) fed off main (200A). required, can be incorporated into the integrated circuit of a This link explains some of the benefits in general terms. Advantages:Infrared waves penetrate dust clouds in space, allowing us to see areas that emit no light. Generate points along line, specifying the origin of point generation in QGIS. Is possible to identify the Lagrange L2 point in the sky from the earth? For example, they can detect certain planets, Schmutzanflliger als ein geschlossenes System, More expensive than a Newtonian of comparable aperture, Closed system, therefore no thermal degradation, Larger apertures (above 8") are rather expensive, Small fields of view due to aperture ratio of about f/13. There are many alternatives regarding where to place such devices. The resulting orbit has a period that is a bit longer than one year. No technology yet has made infrared technology obsolete. Corrections? WebAppendix C: Advantages and Disadvantages of Ground- and Space-Based Options for Infrared and Visible Observations of Near Earth Objects | Finding Hazardous Asteroids Wiki User. The reason Earthlight is an important consideration is that it can come in different directions to the Sunlight. Constant amounts of light are much easier to manage. What are the advantages and disadvantages of infrared telescopes? The satellite is injected into a highly eccentric orbit shortly after launch. This increases sky visibility and observation efficiency. WebThe Earths atmosphere blocks all X-rays from space, so space telescopes must be used to observe in these wavelengths. Significant external torques result from high Earth gravity gradient and atmospheric drag and must be countered. Will JWST be as durable as the hubble telescope? 2.) As this ozone layer lies at an altitude of 2040 km (1225 miles), astronomers have to resort to rockets and satellites to make observations from above it. Another disadvantage of these telescopes deals with contrast. The Deep Space Network (or equivalent) is needed on the Earth, and a simple fixed antenna is not sufficient on the satellite. The best answers are voted up and rise to the top, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. Will the JWST be affected by dust at L2 (gegenschein?). Fuel should be reserved for end-of-life activity. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. In space, however, telescopes are able to geta clearer shot of everything from exploding stars to other galaxies . A. The Deep Space Network is not needed to receive data from a satellite orbiting Sun-Earth L2, and the antenna on the spacecraft can be fairly simple. Telescopes can be classified by optical design or mechanical design/construction. The satellite is injected into a complex transfer orbit shortly after launch that eventually carries the vehicle close to the Sun-Earth L2 point. Portable 4. More expensive than a Newtonian of comparable aperture2. Earths stratospheric ozone layer blocks all wavelengths shorter than 300 nm from reaching ground-based telescopes. WebWe derive general equations for non-linearity corrections and statistical uncertainty (variance) estimates for data acquired with near-infrared detectors employing correlated double sampling, multiple correlated double One of the first disadvantages deals with maintenance. Since it will always be at the same location relative to Earth-in the midnight sky about 1.5 million km away - we can have continuous communications with it as the Earthwith rotates through the Deep Space Network". @notovny The difference in brightness in the light and dark side of the Earth is negligible when compared to the Sun. It studied the composition of the interstellar and intergalactic mediums. Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. Being so close to the Earth means that it obscures a large portion of the sky. For this answer, I'll consider space telescopes to be telescopes that operate in space and that are intended to look at objects at the extremes of the solar system and beyond. Webinfrared telescope, instrument designed to detect and resolve infrared radiation from sources outside Earth s atmosphere such as nebulae, young stars, and gas and dust in Omissions? Parking a telescope at a Lagrange point: is this a good idea from a debris point of view? There are actually three main telescope types, refractor, reflector, and catadioptric (which uses both lenses and mirrors to form its image). rev2023.4.21.43403. Three of the telescopes had scanners that were pointed in the satellites spin plane. Does it also help that the dark side of Earth is the one facing L2, or is the difference minimal in the IR spectrum? Unlike other telescopes, radio telescopes are not blocked by celestial dust or debris. The SC thread allows a wide range of accessories to be connected6. [2] These were the first air-borne infrared telescopes. Communication systems are not cheap. Let us know if you have suggestions to improve this article (requires login). Why is it shorter than a normal address? Portable4. their respective dongles have a clear line of sight between each Infrared light is one of several types of radiation present in the electromagnetic spectrum. Web6. VerifiedHint: You could first explain how these IR telescopes are different from other optical telescopes. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Instruments with a fork mount can be set up extremely rapidly Disadvantages: 1. Optical telescopes can be classified by three primary optical designs (refractor, reflector, or catadioptric), by sub-designs of these types, by how they are constructed, or by the task they perform. Web6 Answers. Earth-trailing heliocentric orbit Description: The satellite is injected into an Earth escape orbit shortly after launch. The telescope can always be pointed so that all three of the Sun, Earth, and Moon are always behind the telescope. I read that it has something to do with lower fuel consumption, but I would like a more detailed answer. Telescopes can also be classified by where they are placed, such as space telescopes. Planets, circumstellar discs, protostars and other warm objects emit negligible flux at visible wavelengths, and can therefore only Low perigee means orbit might cross Van Allen radiation belts and might even descend into altitudes where atmospheric drag is present. WebAdvantages: 1. Sorry for the briefing chart style answer. Optical telescopes can be classified by three primary optical designs (refractor, reflector, or catadioptric), by sub-designs of these types, by how they are constructed, or by the task they perform. Scenario 2 where a radio telescope would be placed in a desert in Arizona to detect communications from civilizations outside of our solar system. Ground-based telescopes have limitations because water vapor in the Earth's atmosphere absorbs infrared radiation. These detectors were cooled with, This page was last edited on 14 January 2023, at 20:55. method is cheaper and less time consuming to conduct. Can someone explain why this point is giving me 8.3V? Hubble is in a Ground-based infrared telescopes tend to be placed on high mountains and in very dry climates to improve visibility. They all have their different advantages and disadvantages and they are used in different areas of professional and amateur astronomy. In the 1960s, scientists used balloons to lift infrared telescopes to higher altitudes. GALEX is designed to observe hot young stars in other galaxies. Advantages-Many things are controlled by infrared. (2009, December 14) NASA launches infrared telescope to scan entire sky. WebAn advantage that infrared telescopes have over optical telescopes in space is that the infrared telescopes can see through the regions hidden from optical telescopes that Did Billy Graham speak to Marilyn Monroe about Jesus? To bypass earths disadvantages like clouds, storms and moisture having an telescope in space eliminates all of earths distractions. Very practical handling3. This alternative is surprisingly cheap in terms of launch V. transmitted, Few international regulatory constraints: IrDA (Infrared Data Ultraviolet radiation has wavelengths of about 400 nanometres (nm) on the visible-light side and about 10 nm on the X-ray side. (2010, July 2) NASA's flying telescope sees early success. Can be expensive in terms of orbit maintenance V due to perturbations from the Moon and the Sun. The main advantage of this is that we can use it to see stuff that we otherwise wouldn't be able to The SC thread allows a wide range of accessories to be connected 6. WebThe Advantages and Disadvantages of Space-Based Telescopes Observatories in space have a number of key advantages. Can be expensive in terms of orbit maintenance V due to perturbations from the Moon and the Sun. My brain apparently has become accustomed to writing in bullets. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. They all have their different advantages and disadvantages and they are used in different areas of professional and amateur Wider wavelengths from the electromagnetic spectrum could be observed for example infrared, ultraviolet, x-sun rays and gamma sun rays. The very high orbital velocity complicates viewing, communications. personal digital assistants, Low circuitry costs: $2-$5 for the entire coding/decoding Can the Gaia telescope detect small temporarily captured asteroids near its Lagrange orbit? They are broken into major classifications with many variations due to professional, amateur, and commercial sub-types. Hamilton, J. Understanding the probability of measurement w.r.t. (I think they're considering this to avoid having to plan around eclipses, which can occur in L2 orbits). Low power requirements: therefore ideal for laptops, telephones, Hipparcos. This article was most recently revised and updated by, https://www.britannica.com/science/ultraviolet-telescope, National Aeronautics and Space Administration. What are the disadvantages of the Hubble Space Telescope? From 1978 to 1996 an orbiting observatory known as the International Ultraviolet Explorer (IUE) studied celestial sources of ultraviolet radiation. Other Benefits: There are some limitations with the Hubble Space Telescope when imaging the Moon due to its sensitivity to light and it cannot image areas in the direction How is imaging spectroscopy used in astronomy? Surprisingly, this alternative is rather expensive in terms of launch V. With balloons, they were able to reach about 25 miles (40 kilometres) up. glass (hence the laser pointers and your TV remotes), but longer It had four telescopes with gold-plated mirrors, the design of which was critically dependent on the transmission properties of the filters used to define the EUV band passes. All three approaches have their advantages and disadvantages, but most scientists believe that its the second option thats most likely to deliver our first success. What are the advantages of running a power tool on 240 V vs 120 V? Satellites positioned at L2 has the sun, earth, and moon all behind it so it gets a continuous view of deep space. The IUE telescope was equipped with a 45-cm (18-inch) mirror, and it recorded data electronically down to 100 nm. So we have to send them to earth orbit above our atmosphere which filters radiations.Certain objects emit only radiation in UV range.So to study them we have to use UV ray telescopes. WebNEO tracking as thermal-infrared detection and tracking of asteroids can only be accomplished on a space-based platform. international travelers, no matter where they may be, High noise immunity: not as likely to have interference from Another disadvantage for ground-basedtelescopes is that the Earths atmosphere absorbs much of the infrared andultraviolet light that passes through it. WebOne of the advantages of observing in the near-infrared is that dust is transparent to it. The V cost to go from the Earth's surface to GEO is higher than is the V cost to achieve escape velocity from the Earth's surface. WebAn infrared telescope is a telescope that uses infrared light to detect celestial bodies. It conducted a photometric deep-sky survey in the ecliptic plane for part of the mission and then collected spectroscopic observations in the final phase of the mission. What techniques are used to study the electromagnetic spectrum in space? The main reason for examining these pros and cons is to There were several key developments that led to the invention of the infrared telescope: Infrared telescopes may be ground-based, air-borne, or space telescopes. Would an accumulation of dust in a planet's L1 Lagrange point plausibly obscure it from Earth? Together, United States scientists and the German Aerospace Center scientists placed a 17-ton infrared telescope on a Boeing 747 jet airplane. Association) functional devices will ideally be usable by that we can see through it but the infrared heat radiation does not Updates? What is the Russian word for the color "teal"? Can I connect multiple USB 2.0 females to a MEAN WELL 5V 10A power supply? A major advantage of an infrared space-based [2] NASA presently has solar-powered spacecraft in space with an infrared telescope called the Wide-field Infrared Survey Explorer (WISE). Could a subterranean river or aquifer generate enough continuous momentum to power a waterwheel for the purpose of producing electricity? I added a link when i exhausted my knowledge! See answer (1) Best Answer. uses for infrared. Are there any canonical examples of the Prime Directive being broken that aren't shown on screen? When it comes to Hubble Space Telescope advantages and disadvantages, there are a number of elements you will want to keep in mind. This larger light collecting area means that Webb can peer farther back into time than Hubble is capable of doing. JWST sunshield is about 22 metres by 12 metres (69.5 ft x 46.5 ft). Astronomers have lots of experience with optical and infrared telescopes operating in free space, the stability of the lunar surface may confer advantages for The Space Infrared Telescope Facility (SIRTF) is to be launched by NASA in 2003. This report reviews infrared waves get reflected. Telescopes in Earth orbit can receive sunlight and earthlight in different directions, meaning that the telescope would have to shield in most directions if it wanted to keep itself cool. NASA; "Webb's position out at L2 also makes it easy for us to talk to it. Ground-based telescopes were the first to be used to observe outer space in infrared. How can Earth-Sun Lagrange points L1 & L2 even be semi stable considering the moon? I know Stack Exchange does not encourage comments that just say 'thanks' but this is an incredibly comprehensive answer! Every space telescope has two primary objectives. Pakistan ka ow konsa shehar ha jisy likhte howy pen ki nuk ni uthati. data isn't leaked or spilled to nearby devices as it's Later, when the satellite does escape the Earth's gravity field, another burn might be performed that ensures the vehicle won't come back to Earth years / decades later. Larger secondary mirror than with a Newtonian telescope, The brand for astronomy & observing nature, Chromatic aberration and blurring if it not corrected, Durch Obstruktion geringerer Kontrast als bei Refraktor gleicher ffnung. Advantages: Disadvantages: Very expensive in terms of launch V. Do Eric benet and Lisa bonet have a child together? The satellite is injected into a geostationary transfer orbit shortly after launch. Can be cheap in terms of launch V, not as cheap as LEO, but cheaper than GEO. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Because both mirrors and lenses are used in catadioptric optical systems, the user obtains certain performance advantages over other types of scopes. Webultraviolet telescope, telescope used to examine the ultraviolet portion of the electromagnetic spectrum, between the portion seen as visible light and the portion occupied by X-rays. Stratospheric Observatory for Infrared Astronomy, SPACE OBSERVATORY TO STUDY THE FAR, THE COLD AND THE DUSTY, "Ask An Infrared Astronomer: Infrared Telescopes", https://www.npr.org/2010/07/02/128015118/nasas-flying-telescope-sees-early-success, http://www.cnn.com/2009/TECH/space/12/14/wise.spacecraft.launch/index.html, JPL: Herschel Space Observatory: Related Missions, https://en.wikipedia.org/w/index.php?title=Infrared_telescope&oldid=1133642233, Short description is different from Wikidata, Creative Commons Attribution-ShareAlike License 3.0, Thomas Edison used an alternative technology, his, In the 1950s, scientists used lead-sulfide detectors to detect the infrared radiation from space.

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