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Questions tagged [imaging]

Questions regarding visual impressions of objects or instruments used to capture visual impressions.

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Technical challenges to improving resolution of lunar orbit imaging by using solar UV light?

@Uwe's question and answer seem to illustrate that the resolution of surface-imaging spacecraft orbiting around the Moon has not dramatically improved over the decades, and that this is pretty-much ...
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135 views

Which one of these (if any) is the Moon? What are the rest?

I frequently see the Moon in SpaceX videos, "I suspect" the frequency is higher than random, but can't prove it (yet!) I found the SpaceX video Falling Back to Earth | HD Footage From Space (also ...
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145 views

What causes Hyabusa-2's close-up images of Ryugu to be dark in the corners?

The NYTimes' article Hayabusa2 Prepares to Drop Rovers on Asteroid Ryugu says Sept. 19 Rock Hoppers Hayabusa2 is preparing to deploy two small rovers this week, each about 7 inches wide. Ryugu’...
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86 views

How can we see RemoveDebris capturing a satellite with a net?

The BBC's RemoveDebris: UK satellite nets 'space junk' says: The aptly named RemoveDebris satellite took a video of its net experiment. The short sequence shows a small, shoebox-sized object ...
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117 views

Why are the stars in TESS' first images “star-shaped”? What causes these artifacts?

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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101 views

Comparison of Lunar Orbiters image resolution after 4 decades?

The Lunar Orbiters, LO were launched 1966 and 1967. The Lunar Reconnaissance Orbiter, LRO was launched more than 40 years later in 2009. This paper has some information about the narrow angle camera ...
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This image of the Space Shuttle is truly beautiful, but is it real?

I saw this image in the Infobae article La NASA probará un paracaídas para posar naves espaciales en Marte ("NASA will test a parachute to place spaceships on Mars"). The image looks plausible to me, ...
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97 views

Better source for the 1967 photograph of Surveyor-1 by Lunar Orbiter-3?

In 1969 Apollo-12 Lunar Module pilot Alan L. Bean photographed Apollo 12 Commander Charles "Pete" Conrad Jr. standing next to Surveyor-3 because despite all of NASA's technological innovation that had ...
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172 views

How does one get Context Camera (CTX) images from Mars with certain identification numbers?

According to Wikipedia the Context Camera(CTX) on board of the Mars Reconnaissance Orbiter had already mapped 50% of Mars by Februari 2010. Should it not have to be possible to get access to all these ...
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150 views

What is happening in this photo of a glowing plume behind STS-70 and how was it taken?

A recent tweet by @NASASpaceflight about STS-70 deployment of TDRS-G (TDRS-7) says: STS-70 - Shuttle Discovery - Launched 13 July 1995 from KSC 39B. Terence T. Henricks commanded her 21st ...
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How was “toolbag-sat” imaged in space? (from Scott Manley's video)

In Scott Manley's video Could An Astronaut Throw Something From Orbit To Earth? at about 02:00 he includes a sequence of images that shows the famous tool bag that ...
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MarCo, Polo? Any further news, or images, or transmissions from the MarCo deep space cubesats?

Edit: Two more months have gone by since I posted this question. Can there still be no news? Nothing for the two MarCo cubesats to take photos of; not even each other? While InSight is still "under ...
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How does a spacecraft like Worldview-3 manage 29 different spectral bands? One giant filter wheel, or…?

@Jack's answer mentions 29 separate spectral bands for the Worldview-3 satellite, and that these are implemented using filters. Is there one giant 29+ position filter wheel incorporated into a single ...
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Why are the gaps in MRO global images of mars so irregular and sometimes filled in?

Moderate Resolution Imaging Spectroradiometer (MODIS) images of Earth snow nice, regular repeating gaps in longitude where the viewing angle is too far for a given pass. But the large GIF shown in ...
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97 views

What are these bright streaks in MODIS Earth images? Why are they shaped this way?

The Moderate Resolution Imaging Spectroradiometer (MODIS) aboard the Aqua (EOS PM-1) satellite generates images of most of the Earth each day, though there are small gaps near the equator where the ...
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What is synthetic tracking, and why would a 35 cm Earth imager be 10-30x better than Pan-STARRS or LSST for interstellar asteroid discovery?

The ArXiv preprint Technical Note: Asteroid Detection Demonstration from SkySat-3 B612 Data using Synthetic Tracking is an interesting read! The abstract says: We report results from analyzing the ...
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How to use this Google Mars viewer to find this Martian landslide event?

This NASA/University of Arizona HiRise tweet shows this interesting image of a meteor impact crater that triggered a landslide (or maybe a "dust-slide") on Mars. The tweet links to this University of ...
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Hovering Carbonite! Why do these satellite videos of Earth appear to be made from a geostationary location?

The BBC News article UK satellite makes HD colour movies of Earth has led me to a series of YouTube videos as well recorded by the Carbonite-2 spacecraft built by Surrey Satellite Technology to be ...
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What is the purpose of, or what is illustrated in this video on MIT's TESS website?

The site tess.mit.edu contains a number of pages with information on the mission, including the page Useful material for presentations. A YouTube video displayed in the upper right corner is a bit ...
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What information exactly was necessary to determine and announce this “debris causing event”?

A 1:53 PM - 19 Jul 2016 tweet from the twitter account @18SPCS said: 19 Jul: JSpOC ID’d debris causing event related to @DigitalGlobe WorldView-2; 8 debris pieces but WV2 confirmed operational &...
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599 views

Stripe of high def imagery on Google Moon

When messing around with Google Earth's Moon and Mars features I noticed that the lunar imagery used is mostly homogeneous except for a large stripe across its' surface. See Image: This "stripe" also ...
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How does DigitalGlobe plan to re-image a specific area “as frequently as every 20 to 30 minutes”?

The Spaceflight Now article DigitalGlobe books two launches with SpaceX for Earth-imaging fleet goes beyond describing the two launches to talk about DigitalGlobe's future plans. Fitted with ...
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151 views

Are these images from Planet Labs? Are the images publicly available?

While the narrator is very enthusiastic, I can't quite figure out if these are images from Planet Labs' Dove satellites, and if the general public can also access this data. In the NPR news article ...
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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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Black-and-white camera images on GOES-S launch

During todays launch of ULA's GOES-S, the public NASA TV coverage showed the rocket during its ascent, filmed from earth. Sometimes, the image changed to a more coarse grained black and white image, ...
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148 views

Color-correcting photos on Mars so that things look like they would on Earth - is it a big correction?

The message at the end of the very cool new NASA JPL video Curiosity at Martian Scenic Overlook says To aid geologists, colors in the image are white balanced so rocks appear the same color as the ...
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393 views

How can ICEYE-X1 capture 2D high resolution SAR images in “tens of seconds”?

The PRNewsWire release First ICEYE-X1 Radar Image from Space Published says: The full image transmitted to the ground from ICEYE-X1 exceeded 1.2GB of raw data and spans an area of roughly 80 x 40 ...
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635 views

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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78 views

Has any lander or rover (besides Huygens) used a flood-light for photography?

I've asked about the flood-light that apparently was included on the Huygens lander in the question Did the Huygens lander have a flood-light for photography? Was it used?. Have there been any other ...
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129 views

Did the Huygens lander have a flood-light for photography? Was it used?

According to this cool answer the Huygens lander on Saturn's moon Titan had a flood light to aid in photography of the surface because of the very low ambient light levels due to the 9.5x farther ...
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What is the line in this picture?

I'm curious about this picture taken from Osiris-Rex. There is a faint vertical line nearly the width of Earth going from the top to the bottom of the image. What is it? Does it have something to do ...
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282 views

The physics behind the Starshade

The Starshade is a space telescope with a large occulter that can fly off and block the light of a star so its telescope can picture the surrounding exoplanets: I ...
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373 views

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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Parallel orbits around the Earth - effectively?

edit: For the purposes of this exercise, one could consider using three or four identical spacecraft, and using the "best two out of three (or four)" for interferometry at any given moment. In 1994, ...
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177 views

Is this the first photo of Jupiter's ring(s) from deep space?

The BBC news article Juno peers below Jupiter's clouds includes several very interesting images from the Juno spacecraft. The one below is a photo of Jupiter's faint ring. The article says: One ...
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171 views

How could the recently explained “glints” seen by DSCOVR appear so compact considering the finite size of the sun?

The discussion section of the very recent, on-line-available Terrestrial glint seen from deep space: oriented ice crystals detected from the Lagrangian point Alexander Marshak, Tamás Várnai and ...
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163 views

Are there ANY verified satellite images of visible light coherent backscattering from Earth?

Coherent backscattering is an optical phenomenon which is a bit complicated and as far as I know is pretty difficult to demonstrate in visible white light images. Image below from here. According to ...
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157 views

When was stereoscopic photography first used intentionally on solar system body?

I have stumbled across the fascinating page Photogrammetric Analysis Of Apollo 11 Imagery: New camera-station map with improved locations at the following website: https://www.hq.nasa.gov/alsj/a11/...
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167 views

Could a cubesat in a 500km SSO orbit effectively monitor earth?

If you were looking for, say, a 1m per pixel quality, what focal length/sensor size would you need? Would there be any off the shelf/commercial solutions?
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Is delay-doppler radar imaging of NEO asteroids possible only if it spins fast enough?

Emily Lakdawalla's blog on the Planetary Society's page explains some of the basic principles in the delay-doppler radar imaging of asteroids, and other astronomical bodies by extension. Radar from a ...
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321 views

What are the sounds in this GoPro-in-orbit ISS video?

The video description says: Published on Apr 15, 2015 This footage was taken by U.S. astronaut Terry Virts during a spacewalk on the International Space Station on February 25, 2015. Virts and ...
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404 views

How do I calculate pointing and stability requirements for a platform (Cubesat, UAV) if we know sensor details (IFOV, Integration Time etc)?

My project involves developing a multi-mission modular satellite bus. I have couple of payloads under consideration and have the necessary sensor details. Based on that I am trying to figure the ...
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226 views

What causes these faint, straight line artifacts in Suomi NPP images of Earth at night?

This is an image of the UK taken by the Suomi NPP satellite's Visible Infrared Imaging Radiometer Suite (VIIRS) in 2012: There are faint lines emanating from Scotland and northern England, with a ...
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What are the proposed causes of these striations on Phobos?

In a picture of Phobos, it appears as if there are striations which circle it, and orthogonal striations which are reminiscent of topological maps. Are these digital photography effects or real? If ...
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10k views

Which Apollo “mystery” was said to be finally solved by a better rendering engine?

I remember reading several years ago about a mystery or puzzle about a photograph from an Apollo moon landing mission that had to do with why someone's suit was as bright as it was in the photo. There ...
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714 views

What is the brown band in which we find the pale blue dot that is Earth?

In the famous "pale blue dot" picture: we see Earth in a brown band. What is that band? Is it an artifact of the camera? Is it a ring of dust orbiting around the Sun akin to the rings of Saturn and ...
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377 views

Why are spy satellites in elliptical orbits?

This answer mentions that (optical) spy satellites are often in elliptical orbits, and when I look here sure enough the orbits are elliptical, with periapsis altitudes around 250 to 400 km, and ...
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478 views

Now what do we think? Is this purple dot really caused by Cassegrain optics and coherent backscattering?

EDIT: The stories in Phys.org NASA's EPIC view spots flashes on Earth and Live Science Mysterious Light Flashes 1st Spotted by Carl Sagan Explained seems to have information potentially relevant to ...
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140 views

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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274 views

Mapping the moon: how to use the Lunar Reconnaissance Orbiter (LRO) image data?

what's the meaning of Scaled pixel width and scaled pixel height of LROC EDR image obtained by LROC image search tool?