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Questions tagged [space-telescope]

A telescope placed in space, typically for the purpose of avoiding atmospheric distortion, background light, and attenuation of light by the atmosphere.

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What are Spectr-R's major contributions to radio astronomy that could not have been done from Earth?

Spektr-R Spektr-R (37755, 2011-037A) is a Russian radiotelescope spacecraft in a very high orbit around the Earth. It's orbit is cis-lunar with an apoapsis of ...
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How was the Moon's first telescope used? (Apollo 16)

From Gizmodo's There's Poop on the Moon list of things left on the moon: This gold-plated telescope that was the first tool used to make astronomical observations from the surface of another ...
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Can James Webb see Kuiper Belt Objects like 2014 MU69 (Ultima Thule)?

In this paper, we learned that Hubble is the only telescope in the vicinity of Earth that can detect Ultima Thule directly. Hubble will eventually fail, and will be somewhat replaced by James Webb. ...
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How will the “fleet of small asteroid hunters” of the B612 Foundation & York Space Systems work?

The June 2018 news item in Science To find small asteroids that could hit Earth, private foundation embraces small satellites says: On 10 May, B612 announced a partnership with York Space Systems, ...
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How do Hubble, Compton, Chandra, and Spitzer compare in bytes of data collected?

The Great Observatories is a NASA nickname for the four largest space telescopes to date. Each covers a different portion of the electromagnetic spectrum: The Hubble Space Telescope, the most famous ...
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What might the first deep space telescope using the Sun or Jupiter as a gravitational lens be like?

@SteveLinton's nicely written and sourced answer about using strong gravitational lensing by the Sun or even Jupiter as a kind of telescope to resolve the surfaces of exoplanets is really interesting, ...
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RIP Kepler, how shall we call your orbit? Does this cyclic flip-flop process have a name?

So long, and thanks for all the Fish Planets The captions in the NASA Ames Research Center video What Will Happen to NASA’s Kepler Spacecraft? read as follows: NASA’s Kepler space telescope found ...
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How would the Apollo telescope have worked in the Apollo command module? Where would it be located and how would it be operated?

In the Vintage Space video episode Missions we Lost When Apollo was Cancelled, there is discussion of the Apollo Telescope and the Block 3 command module after about ...
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Hubble's one-gyro mode; how does it work for attitude control, stabilization, and slewing?

Space.com's Hubble Space Telescope Apparently in 'Safe Mode' After Gyroscope Failure says: "It’s true. Very stressful weekend. Right now HST is in safe mode while we figure out what to do. Another ...
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Queries regarding deep space missions [closed]

What is deep space refers to? We have not even explore our nearby planets (till Mars) then why space agencies are going for deep space missions (like voyager-1 and voyager-2)? What do they want to ...
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What causes these cross-shaped artifacts in TESS' first images?

TESS has a group of four wide field cameras each with four large CCD imagers that will collect photometric data at a relatively high cadence, and therefore generate a ton of data. above: "TESS (...
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Could we see someone walking on Mars from Earth?

Can any telescope be capable to see some one walking on Mars? How much time dilation would there be? What is the theoretical best resolution?
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Do we have a photo of a micrometeorite impact on a lens?

Micrometeorite and debris impacts on orbital spacecraft pose a threat to systems and crew. For example, a high velocity impact caused this chip in the International Space Station's Cupola. The ISS ...
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Could the Lunar Lagrange Points work for space telescopes?

Every orbit in space has its pros and cons. Low Earth Orbit has accessibility but frequent eclipses whereas a Solar Lagrange Point is clear and stable but distant. In the case of the Lunar Lagrange ...
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How bright would electrostatically suspended dust above the lunar surface be? Has it ever been measured?

@TomSpilker's answer mentions the potential effect of dust from the lunar regolith being slightly electrostatically levitated by the charge on the lunar surface induced by the solar wind on telescopic ...
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Why are so many space telescopes placed in LEO instead of at Lagrange Points? And why do we hear about Hubble more than any Langrange-orbit telescope?

Here is the list of every space telescope launched by different space agencies - List of space telescopes. Most of the listed telescopes are placed in Lower Earth Orbit (about 95% of them). It's ...
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To use a gravitational lens as a telescope, does the hypothetical user have to do so from a given angle?

This question is about the use of a gravitational lens for example of a distant galaxy or sun. I’m curious to know whether the two outer masses, say galaxies or suns (when to the observers of course) ...
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How do Tom & Jerry (CANYVAL-X) measure their alignment with a distance source accurately?

According to the Spaceflight 101 article CANYVAL-X – Tom & Jerry: CANYVAL-X is a two-satellite CubeSat mission aiming to demonstrate a Vision Alignment System that could enable a virtual ...
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Technology to directly observe an exoplanets [closed]

I would like to know what number of space telescopes, ideally mass produced ones using current technology and that could be cheaply manufactured and launched en-mass via the future SpaceX BFR. How ...
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Could a spy satellite in orbit be recommissioned to do astronomy?

Since the National Reconnaissance Office offered NASA a left-over Hubble sized mirror that might be used for the WFIRST space telescope, I wonder if the NRO has satellites in operation that could do ...
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Can image-stacking allow this 0.25 m satellite telescope achieve 0.65m resolution?

The BBC News item UK satellite to make movies from space describes this newly deployed satellite: caption: Artwork: Manufacturer SSTL calls it Carbonite-2, but Earth-i refers to the satellite as ...
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JWST observing cherry red Tesla roadster

Assuming both launches are successful, if JWST tries to solve Tesla's cherry red body paint light spectrum, what would it tell about it's composition? Could it be confusing if it was an unknown object?...
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Could a 21 meter space telescope detect the nearest exoplanets?

For reference, Hubble's mirror is 2.4 meters wide, the upcoming James Webb's 6.5 meters, and the proposed ATLAST 8 or 16 meters. Let's assume a mirror nearly ten times Hubble's size, 21 meters, is ...
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Anyone know what happened to the AAReST project?

AAReST was a really neat project by Caltech and University of Surrey (UK) to experiment with a self-assembling space telescope mirror. There are some interesting articles and papers about it circa ...
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Earth gravity lens focus

Reading this question and then this report in a comment by @called2voyage At some point they talk about possibility to send (using antimatter as propellant) a space mission to solar gravity lens ...
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Can mirrors be made from fabric?

I was recently listening to a talk about JWST and other future astrophysics missions when the speaker talked about many of the size limitations associated with mirrors etc. I then thought perhaps one ...
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Are there orbits for a starshade and a telescope to stay linear to an interstellar object?

Does there exist two orbits synchronized so that a telescope in one would line up with a star shade in the other on a line pointing to a certain star? And this during a period of time relevant for ...
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Why the thermal imaging of Mercury's surface requires a telescope on a jet flying through an eclipse?

The NASA News Feature Chasing the Total Solar Eclipse from NASA’s WB-57F Jets describes two telescope-equipped NASA jets that will fly fast enough to spend about 7 minutes in the Umbra (totality) of ...
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Why isn't the JWST mirror bigger?

What's behind the choice of not designing the largest possible folding mirror for the James Webb space telescope, since something like a 13m diameter mirror could also fit in Ariane's fairing?
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Infrared space interferometry - Why isn't it being done?

Spektr-R is a 10 meter diameter radio telescope in Earth's orbit with an apogee of 338,000 km, nearly a Lunar distance. It does interferometry together with the Very-Long-Baseline Interferometry ...
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How did scientists put forth or create the images of milky way galaxy

I understand telescopes were used to observe and capture images of other galaxies. But, by risking the question sounding pretty ordinary, may I know how did we take the pictures or photographs of our ...
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Would an interstellar exoplanet telescope make sense?

Since the transit method of detecting exoplanets requires perfect alignment of orbits, would a Kepler-type telescope yield more exoplanet detections if sent out of our solar system even to relatively ...
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Why has the Earth-Sun libration point L1 been chosen over L2 for NEOCam to detect new NEOs?

above: Profoundly not-to-scale illustration of NEOCam in an orbit around the Sun-Earth libration point L1, about 1.5 million kilometers from Earth. Presumably Sun-shield and Earth-shield block light (...
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Russian space observatory Spektr-UV

Where can I find more detailed information about Spectr-UV? I'm interested to find an in-depth article and/or images of it's components. It seems that it could have offered a unique capability, why ...
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Why would the James Webb Space Telescope need adaptive optics outside the atmosphere?

Adaptive Optics is generally used with ground telescopes to correct for atmospheric distortions or seeing. Right now it is used mostly in the infrared but is starting to be used in longer visible ...
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Could the spherical aberration of Hubble have been solved using only software techniques?

When the Hubble space telescope was originally launched, there was a significant error in the way the main lens was ground, causing major spherical aberration. A repair mission was scheduled and the ...
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What are these dark lines in IRIS images of the sun?

Dark, narrow, straight lines move around within images from Interface Region Imaging Spectrograph (IRIS) in such a way that they appear intentional and systematic, and not just some imaging artifact ...
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Why does the Gaia space telescope have two main mirrors

The Gaia space telescope has two main mirrors that look in different directions, 106⁰ apart. The light of both is focused on a single CCD. Why does it have two main mirrors? Is it only to have more ...
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Rocky Planet around Proxima Centauri - how can we learn more about it?

Besides an epic millennium-long interstellar voyage by a probe, what can we possibly do to learn more about this rocky planet discovered around Proxima Centauri? I understand that we have some ...
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What's the largest aperture telescope sent beyond the Earth-Moon system?

The question and answer about telescopes sent to different planets got me wondering. There are so many solar system bodies that have been photographed by deep space spacecraft, planets, dwarf planet(s?...
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Why haven't telescopes been sent to other planets?

Why haven't we sent telescopes to other planets? Wouldn't we be able to see further? Aren't we interested in seeing further without having to send a probe that will take years to get to where it's ...
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What are these echo-like artifacts in some SDO images?

I was looking at the Galleries in the NASA Scientific Visualization Studio and in the banner they show an image from SDO - the Solar Dynamics Observatory. I've posted it below along with a cropped, ...
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What kind of space telescope would be needed to detect oxygen in the atmosphere of a nearby extrasolar planet?

Would existing or upcoming telescopes (such as James Webb) be powerful enough to perform spectroscopy on an extra solar planet? Or would this require technology that is far beyond our current or ...
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Would a lunar telescope provide a significant improvement over terrestrial based equipment?

As I understand it, the moon makes for an ideal location for a telescope because it offers environmental factors that are unlike anything achievable on earth: A lack of atmosphere, light pollution, ...
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If a telescope detects death of a star which is 1 million light years away today, doesn't that mean it's dead 1 million years ago? [closed]

I'm guessing as if its an optical reflecting telescope. How in general does NASA and other research centres detect far away bodies? What telescopes do they use, and in general, wouldn't the event be ...
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Is there any plan to send a space telescope to orbit around gas giants?

While sending a space probe to orbit around a gas giant is often heard of, are there plans to send a space telescope to orbit around gas giants, so that it can operate far away from the sun, or even ...
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Could IR space telescopes and other very cold devices use Zeeman slowers effectively in the near term?

Infrared telescopes need to be very cold (often below 10 K) to be effective. So do a few other miscellaneous things, including superconductors, if we ever use them in space for e.g. mass drivers or ...
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Why do some space telescopes require cooling (sometimes down to 3K)?

Space is already cold, so why do some space telescopes require cooling? Ex: infra-red telescope What kind of cryocoolers are used, and why?
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Why is it hard to take a high quality image of far away objects (like Pluto) using a high-tech space telescope?

Why did NASA send a probe so close to Pluto instead of using a high-tech telescope to capture images of its surface? The Icy Mountains of Pluto. Image credit: New Horizons / Johns Hopkins Applied ...
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Does Earth get in Hubble's way?

Hubble takes very long exposures for its images so that it can collect enough light to see very distant objects. These exposures can be several hours, or even several days, long. I often read that the ...