https://marspedia.org/index.php?title=Imaging_Spectroscopy&feed=atom&action=historyImaging Spectroscopy - Revision history2024-03-28T17:38:41ZRevision history for this page on the wikiMediaWiki 1.34.2https://marspedia.org/index.php?title=Imaging_Spectroscopy&diff=138030&oldid=prevJimL at 20:02, 12 July 20212021-07-12T20:02:43Z<p></p>
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<td colspan="2" style="background-color: #fff; color: #222; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #222; text-align: center;">Revision as of 20:02, 12 July 2021</td>
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<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>In imaging spectroscopy, a <del class="diffchange diffchange-inline">photograph is taken in a way that </del>measures the intensity of light at <del class="diffchange diffchange-inline">a number of </del>different wavelengths. <del class="diffchange diffchange-inline"> This process generates a separate light spectrum for </del>every pixel in the photograph. </div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">Regular cameras record light intensity at 3 wavelengths (red, green, and blue), which is sufficient to produce an image the looks accurate to the human eye. </ins>In imaging spectroscopy, a <ins class="diffchange diffchange-inline">camera </ins>measures the intensity of light at <ins class="diffchange diffchange-inline">more than just 3 </ins>different wavelengths.<ins class="diffchange diffchange-inline"> For </ins>every pixel in the photograph<ins class="diffchange diffchange-inline">, the camera records data that can be viewed as a graph showing how the intensity of light varies across the visible region of the electromagnetic spectrum (and sometimes beyond the visible region). That graph can reveal details about the chemical makeup and physical properties of the photographed object</ins>. </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Imaging spectroscopy <del class="diffchange diffchange-inline">can be </del>used by telescopes and spacecraft to study Mars.</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Imaging spectroscopy <ins class="diffchange diffchange-inline">has been </ins>used by telescopes and spacecraft to study Mars. </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Reflectance spectroscopy and thermal emission spectroscopy are two types of imaging spectroscopy.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Reflectance spectroscopy and thermal emission spectroscopy are two types of imaging spectroscopy.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Reflectance Spectroscopy==</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Reflectance Spectroscopy==</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Reflectance spectroscopy measures the visible and infrared light spectrum of the sunlight reflected from an object. After the spectrum of the light emitted by the sun is taken into account, a spectrum that is specific to the reflecting material is calculated. This spectrum can be compared to a library of known spectra.<ref>Shaw GA & Burke HK. 2003. Spectral Imaging for Remote Sensing. Lincoln Laboratory Journal, 14(1), 3-28. <nowiki>https://courses.cs.washington.edu/courses/cse591n/07sp/papers/Shaw2003.pdf</nowiki></ref> The Compact Reconnaissance Imaging Spectrometer for Mars, an instrument on the [[Mars Reconnaissance Orbiter]], uses reflectance spectroscopy to <del class="diffchange diffchange-inline">identify minerals on </del>the surface <del class="diffchange diffchange-inline">of Mars</del>.<ref>Johns Hopkins Applied Physics Laboratory. <del class="diffchange diffchange-inline">Compact Reconnaissance Imaging Spectrometer for Mars</del>. <nowiki>http://crism.jhuapl.edu/index.php</nowiki></ref></div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Reflectance spectroscopy measures the visible and infrared light spectrum of the sunlight reflected from an object. After the spectrum of the light emitted by the sun is taken into account, a spectrum that is specific to the reflecting material is calculated. This spectrum can be compared to a library of known spectra.<ref>Shaw GA & Burke HK. 2003. Spectral Imaging for Remote Sensing. Lincoln Laboratory Journal, 14(1), 3-28. <nowiki>https://courses.cs.washington.edu/courses/cse591n/07sp/papers/Shaw2003.pdf<ins class="diffchange diffchange-inline"></nowiki></ref> The [[Mars Express]] Orbiter uses an imaging spectrometer named Observatoire pour la Minéralogie, l'Eau, les Glaces et l'Activité (OMEGA) to study the elements and minerals present on the surface of Mars.<ref>The European Space Agency. Mars Express orbiter instruments. <nowiki>http://www.esa.int/Science_Exploration/Space_Science/Mars_Express/Mars_Express_instruments</nowiki></ref> OMEGA's detection of hydrated minerals in 2005 was, at the time, the strongest evidence that surface water was once present in large amounts and for a long duration.<ref>The European Space Agency. September 1 2019. Mars Express science highlights: #1. Hydrated minerals – evidence of liquid water on Mars. <nowiki>https://sci.esa.int/web/mars-express/-/51821-1-hydrated-minerals-ndash-evidence-of-liquid-water-on-mars</ins></nowiki></ref> The Compact Reconnaissance Imaging Spectrometer for Mars, an instrument on the [[Mars Reconnaissance Orbiter]], uses reflectance spectroscopy to <ins class="diffchange diffchange-inline">examine </ins>the surface <ins class="diffchange diffchange-inline">and dust in the atmosphere. Among other findings, it was used to better understand how dust warms the Martian atmosphere by absorbing sunlight</ins>.<ref>Johns Hopkins Applied Physics Laboratory. <ins class="diffchange diffchange-inline">CRISM's Investigations and New Discoveries (2006-present)</ins>. <nowiki>http://crism.jhuapl.edu<ins class="diffchange diffchange-inline">/science/themes</ins>/index.php</nowiki></ref></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>== Thermal Emission Spectroscopy ==</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>==Thermal Emission Spectroscopy==</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Thermal emission spectroscopy, also known as infrared imaging, measures the infrared light that is released by any object as a result of normal molecular vibrations. The spectrum of this light provides information on the composition of the object that emitted it, and that object's temperature. The Thermal Emission Spectrometer on [[Mars Global Surveyor]] used thermal emission spectroscopy to learn about dust in the Martian atmosphere and the surface temperature on Mars.<ref>Arizona State University. Mars Global Surveyor Thermal Emission Spectrometer. <nowiki>http://tes.asu.edu/index.html</nowiki></ref> The Thermal Infrared Imaging Spectrometer on the [[Mars Orbiter Mission]] spacecraft also uses this technique.<ref>Indian Space Research Organization. Payloads. In ''PSLV-C25/Mars Orbiter Mission''. <nowiki>https://www.isro.gov.in/pslv-c25-mars-orbiter-mission/payloads</nowiki></ref> </div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Thermal emission spectroscopy, also known as infrared imaging, measures the infrared light that is released by any object as a result of normal molecular vibrations. The spectrum of this light provides information on the composition of the object that emitted it, and that object's temperature. The Thermal Emission Spectrometer on [[Mars Global Surveyor]] used thermal emission spectroscopy to learn about dust in the Martian atmosphere and the surface temperature on Mars.<ref>Arizona State University. Mars Global Surveyor Thermal Emission Spectrometer. <nowiki>http://tes.asu.edu/index.html</nowiki></ref> The Thermal Infrared Imaging Spectrometer on the [[Mars Orbiter Mission]] spacecraft also uses this technique.<ref>Indian Space Research Organization. Payloads. In ''PSLV-C25/Mars Orbiter Mission''. <nowiki>https://www.isro.gov.in/pslv-c25-mars-orbiter-mission/payloads</nowiki></ref></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">==Multispectral Imaging==</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">It is also possible for a single instrument to combine both of the above methods to perform multispectral imaging.</ins> <ins class="diffchange diffchange-inline">The Thermal Emission Imaging System on [[Mars Odyssey]] is capable of multispectral imaging.<ref>Arizona State University School of Earth & Space Exploration. Frequently Asked Questions. In ''Mars Odyssey THEMIS''. <nowiki>http://themis.asu.edu/faq</nowiki></ref></ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>== <del class="diffchange diffchange-inline">Multispectral Imaging </del>==</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>==<ins class="diffchange diffchange-inline">External Links</ins>==</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">It is also possible </del>for <del class="diffchange diffchange-inline">a single instrument to combine both of the above methods to perform multispectral imaging. The Thermal Emission Imaging System on [[</del>Mars <del class="diffchange diffchange-inline">Odyssey]] is capable of multispectral imaging.<ref>Arizona State University School of Earth & Space Exploration. Frequently Asked Questions. In ''Mars Odyssey THEMIS''. <nowiki></del>http://<del class="diffchange diffchange-inline">themis</del>.<del class="diffchange diffchange-inline">asu</del>.edu/<del class="diffchange diffchange-inline">faq</nowiki></ref></del></div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">Compact Reconnaissance Imaging Spectrometer </ins>for Mars <ins class="diffchange diffchange-inline">web site: </ins>http://<ins class="diffchange diffchange-inline">crism</ins>.<ins class="diffchange diffchange-inline">jhuapl</ins>.edu/<ins class="diffchange diffchange-inline">index.php</ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">== External Links ==</del></div></td><td colspan="2"> </td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Library of thermal infrared spectra maintained by Arizona State University's Mars Space Flight Facility: https://speclib.asu.edu/</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Library of thermal infrared spectra maintained by Arizona State University's Mars Space Flight Facility: https://speclib.asu.edu/</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==References==</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==References==</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><references /></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><references /></div></td></tr>
</table>JimLhttps://marspedia.org/index.php?title=Imaging_Spectroscopy&diff=137252&oldid=prevJimL at 23:32, 22 February 20212021-02-22T23:32:09Z<p></p>
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<td colspan="2" style="background-color: #fff; color: #222; text-align: center;">Revision as of 23:32, 22 February 2021</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l3" >Line 3:</td>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Imaging spectroscopy can be used by telescopes and spacecraft to study Mars.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Imaging spectroscopy can be used by telescopes and spacecraft to study Mars.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Reflectance spectroscopy and emission spectroscopy are two types of imaging spectroscopy.</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Reflectance spectroscopy and <ins class="diffchange diffchange-inline">thermal </ins>emission spectroscopy are two types of imaging spectroscopy.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Reflectance Spectroscopy==</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Reflectance Spectroscopy==</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Reflectance spectroscopy measures the visible and infrared light spectrum of the sunlight reflected from an object. After the spectrum of the light emitted by the sun is taken into account, a spectrum that is specific to the reflecting material is calculated. This spectrum can be compared to a library of known spectra.<ref>Shaw GA & Burke HK. 2003. Spectral Imaging for Remote Sensing. Lincoln Laboratory Journal, 14(1), 3-28. <nowiki>https://courses.cs.washington.edu/courses/cse591n/07sp/papers/Shaw2003.pdf</nowiki></ref> The Compact Reconnaissance Imaging Spectrometer for Mars, an instrument on the [[Mars Reconnaissance Orbiter]], uses reflectance spectroscopy to identify minerals on the surface of Mars.<ref>Johns Hopkins Applied Physics Laboratory. Compact Reconnaissance Imaging Spectrometer for Mars. <nowiki>http://crism.jhuapl.edu/index.php</nowiki></ref></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Reflectance spectroscopy measures the visible and infrared light spectrum of the sunlight reflected from an object. After the spectrum of the light emitted by the sun is taken into account, a spectrum that is specific to the reflecting material is calculated. This spectrum can be compared to a library of known spectra.<ref>Shaw GA & Burke HK. 2003. Spectral Imaging for Remote Sensing. Lincoln Laboratory Journal, 14(1), 3-28. <nowiki>https://courses.cs.washington.edu/courses/cse591n/07sp/papers/Shaw2003.pdf</nowiki></ref> The Compact Reconnaissance Imaging Spectrometer for Mars, an instrument on the [[Mars Reconnaissance Orbiter]], uses reflectance spectroscopy to identify minerals on the surface of Mars.<ref>Johns Hopkins Applied Physics Laboratory. Compact Reconnaissance Imaging Spectrometer for Mars. <nowiki>http://crism.jhuapl.edu/index.php</nowiki></ref></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>==Emission Spectroscopy==</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>== <ins class="diffchange diffchange-inline">Thermal </ins>Emission Spectroscopy ==</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">Emission </del>spectroscopy measures the infrared light that is released by any object as a result of normal molecular vibrations. The spectrum of this light provides information on the composition of the object that emitted it, and that object's temperature. The Thermal Emission Spectrometer on <del class="diffchange diffchange-inline">the </del>[[Mars Global Surveyor]] used <del class="diffchange diffchange-inline">this technique </del>to learn about dust in the Martian atmosphere and the surface temperature on Mars.<ref>Arizona State University. Mars Global Surveyor Thermal Emission Spectrometer. <nowiki>http://tes.asu.edu/index.html</nowiki></ref></div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">Thermal emission </ins>spectroscopy<ins class="diffchange diffchange-inline">, also known as infrared imaging, </ins>measures the infrared light that is released by any object as a result of normal molecular vibrations. The spectrum of this light provides information on the composition of the object that emitted it, and that object's temperature. The Thermal Emission Spectrometer on [[Mars Global Surveyor]] used <ins class="diffchange diffchange-inline">thermal emission spectroscopy </ins>to learn about dust in the Martian atmosphere and the surface temperature on Mars.<ref>Arizona State University. Mars Global Surveyor Thermal Emission Spectrometer. <nowiki>http://tes.asu.edu/index.html</nowiki></ref> <ins class="diffchange diffchange-inline"> The Thermal Infrared Imaging Spectrometer on the [[Mars Orbiter Mission]] spacecraft also uses this technique.<ref>Indian Space Research Organization. Payloads. In ''PSLV-C25/Mars Orbiter Mission''. <nowiki>https://www.isro.gov.in/pslv-c25-mars-orbiter-mission/payloads</nowiki></ref> </ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>== References ==</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">== Multispectral Imaging ==</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">It is also possible for a single instrument to combine both of the above methods to perform multispectral imaging. The Thermal Emission Imaging System on [[Mars Odyssey]] is capable of multispectral imaging.<ref>Arizona State University School of Earth & Space Exploration. Frequently Asked Questions. In ''Mars Odyssey THEMIS''. <nowiki>http://themis.asu.edu/faq</nowiki></ref></ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">== External Links ==</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">Library of thermal infrared spectra maintained by Arizona State University's Mars Space Flight Facility: https://speclib.asu.edu/</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>==References==</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><references /></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><references /></div></td></tr>
</table>JimLhttps://marspedia.org/index.php?title=Imaging_Spectroscopy&diff=136729&oldid=prevJimL at 23:39, 10 November 20202020-11-10T23:39:36Z<p></p>
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<td colspan="2" style="background-color: #fff; color: #222; text-align: center;">Revision as of 23:39, 10 November 2020</td>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Reflectance spectroscopy and emission spectroscopy are two types of imaging spectroscopy.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Reflectance spectroscopy and emission spectroscopy are two types of imaging spectroscopy.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>== Reflectance Spectroscopy ==</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>==Reflectance Spectroscopy==</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Reflectance spectroscopy measures the visible and infrared light spectrum of the sunlight reflected from an object. After the spectrum of the light emitted by the sun is taken into account, a spectrum that is specific to the reflecting material is calculated. This spectrum can be compared to a library of known spectra.<ref>Shaw GA & Burke HK. 2003. Spectral Imaging for Remote Sensing. Lincoln Laboratory Journal, 14(1), 3-28. <nowiki>https://courses.cs.washington.edu/courses/cse591n/07sp/papers/Shaw2003.pdf</nowiki></ref> The Compact Reconnaissance Imaging Spectrometer for Mars, an instrument on the [[Mars Reconnaissance Orbiter]], uses reflectance spectroscopy to identify minerals on the surface of Mars.<ref>Johns Hopkins Applied Physics Laboratory. Compact Reconnaissance Imaging Spectrometer for Mars. <nowiki>http://crism.jhuapl.edu/index.php</nowiki></ref></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Reflectance spectroscopy measures the visible and infrared light spectrum of the sunlight reflected from an object. After the spectrum of the light emitted by the sun is taken into account, a spectrum that is specific to the reflecting material is calculated. This spectrum can be compared to a library of known spectra.<ref>Shaw GA & Burke HK. 2003. Spectral Imaging for Remote Sensing. Lincoln Laboratory Journal, 14(1), 3-28. <nowiki>https://courses.cs.washington.edu/courses/cse591n/07sp/papers/Shaw2003.pdf</nowiki></ref> The Compact Reconnaissance Imaging Spectrometer for Mars, an instrument on the [[Mars Reconnaissance Orbiter]], uses reflectance spectroscopy to identify minerals on the surface of Mars.<ref>Johns Hopkins Applied Physics Laboratory. Compact Reconnaissance Imaging Spectrometer for Mars. <nowiki>http://crism.jhuapl.edu/index.php</nowiki></ref></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>== Emission Spectroscopy ==</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>==Emission Spectroscopy==</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Emission spectroscopy measures the infrared light that is released by any object as a result of normal molecular vibrations. The spectrum of this light provides information on the composition of the object that emitted it, and that object's temperature. The Thermal Emission Spectrometer on the [[Mars Global Surveyor]] used this technique to learn about dust in the Martian atmosphere and the surface temperature on Mars.<ref>Arizona State University. Mars Global Surveyor Thermal Emission Spectrometer. <nowiki>http://tes.asu.edu/index.html</nowiki></ref></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Emission spectroscopy measures the infrared light that is released by any object as a result of normal molecular vibrations. The spectrum of this light provides information on the composition of the object that emitted it, and that object's temperature. The Thermal Emission Spectrometer on the [[Mars Global Surveyor]] used this technique to learn about dust in the Martian atmosphere and the surface temperature on Mars.<ref>Arizona State University. Mars Global Surveyor Thermal Emission Spectrometer. <nowiki>http://tes.asu.edu/index.html</nowiki></ref></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">== References ==</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"><references /></ins></div></td></tr>
</table>JimLhttps://marspedia.org/index.php?title=Imaging_Spectroscopy&diff=136728&oldid=prevJimL: Created page with "In imaging spectroscopy, a photograph is taken in a way that measures the intensity of light at a number of different wavelengths. This process generates a separate light spe..."2020-11-10T23:38:50Z<p>Created page with "In imaging spectroscopy, a photograph is taken in a way that measures the intensity of light at a number of different wavelengths. This process generates a separate light spe..."</p>
<p><b>New page</b></p><div>In imaging spectroscopy, a photograph is taken in a way that measures the intensity of light at a number of different wavelengths. This process generates a separate light spectrum for every pixel in the photograph. <br />
<br />
Imaging spectroscopy can be used by telescopes and spacecraft to study Mars.<br />
<br />
Reflectance spectroscopy and emission spectroscopy are two types of imaging spectroscopy.<br />
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== Reflectance Spectroscopy ==<br />
Reflectance spectroscopy measures the visible and infrared light spectrum of the sunlight reflected from an object. After the spectrum of the light emitted by the sun is taken into account, a spectrum that is specific to the reflecting material is calculated. This spectrum can be compared to a library of known spectra.<ref>Shaw GA & Burke HK. 2003. Spectral Imaging for Remote Sensing. Lincoln Laboratory Journal, 14(1), 3-28. <nowiki>https://courses.cs.washington.edu/courses/cse591n/07sp/papers/Shaw2003.pdf</nowiki></ref> The Compact Reconnaissance Imaging Spectrometer for Mars, an instrument on the [[Mars Reconnaissance Orbiter]], uses reflectance spectroscopy to identify minerals on the surface of Mars.<ref>Johns Hopkins Applied Physics Laboratory. Compact Reconnaissance Imaging Spectrometer for Mars. <nowiki>http://crism.jhuapl.edu/index.php</nowiki></ref><br />
<br />
== Emission Spectroscopy ==<br />
Emission spectroscopy measures the infrared light that is released by any object as a result of normal molecular vibrations. The spectrum of this light provides information on the composition of the object that emitted it, and that object's temperature. The Thermal Emission Spectrometer on the [[Mars Global Surveyor]] used this technique to learn about dust in the Martian atmosphere and the surface temperature on Mars.<ref>Arizona State University. Mars Global Surveyor Thermal Emission Spectrometer. <nowiki>http://tes.asu.edu/index.html</nowiki></ref></div>JimL