Editing Mars Reconnaissance Orbiter (section)

=== CTX ===<!-- Other articles link here. -->
The '''Context Camera (CTX)''' provides [[grayscale]] images (500 to 800&nbsp;nm) with a pixel resolution up to about {{convert|6|m|abbr=on}}. CTX is designed to provide context maps for the targeted observations of HiRISE and CRISM, and is also used to [[Photographic mosaic|mosaic]] large areas of Mars, monitor a number of locations for changes over time, and to acquire stereo (3D) coverage of key regions and potential future landing sites.<ref name="Context Camera Investigation on board the Mars Reconnaissance Orbiter"/><ref name="Present-day activity, monitoring, and documentation of gullies with the Mars Reconnaissance Orbiter (MRO) Context Camera (CTX)"/> The optics of CTX consist of a {{convert|350|mm|abbr=on}} [[focal length]] <!-- diameter unknown -->[[Maksutov telescope#Maksutov–Cassegrains|Maksutov Cassegrain telescope]] with a 5,064 pixel wide line array CCD. The instrument takes pictures {{convert|30|km|abbr=on}} wide and has enough internal memory to store an image {{convert|160|km|abbr=on}} long before loading it into the [[Mars Reconnaissance Orbiter#Electronic systems|main computer]].<ref name="MRO Context Imager (CTX) Instrument Description"/> The camera was built, and is operated by [[Malin Space Science Systems]]. CTX had mapped more than 99% of Mars by March 2017 and helped create an interactive map of Mars in 2023.<ref>{{Cite web |title=A Decade of Compiling the Sharpest Mars Map |url=https://mars.nasa.gov/resources/8333/a-decade-of-compiling-the-sharpest-mars-map |access-date=2023-08-04 |website=NASA Mars Exploration |language=en |archive-date=June 8, 2023 |archive-url=https://web.archive.org/web/20230608001551/https://mars.nasa.gov/resources/8333/a-decade-of-compiling-the-sharpest-mars-map/ |url-status=live }}</ref><ref>{{Cite web |last=Greicius |first=Tony |date=2023-04-04 |title=New Interactive Mosaic Uses NASA Imagery to Show Mars in Vivid Detail |url=http://www.nasa.gov/feature/jpl/new-interactive-mosaic-uses-nasa-imagery-to-show-mars-in-vivid-detail |access-date=2023-08-04 |website=NASA |archive-date=May 19, 2023 |archive-url=https://web.archive.org/web/20230519065931/http://www.nasa.gov/feature/jpl/new-interactive-mosaic-uses-nasa-imagery-to-show-mars-in-vivid-detail/ |url-status=live }}</ref>