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Louth (crater)
Louth () is an impact crater on Mars located at in the Mare Boreum quadrangle. Located within Vastitas Borealis, the crater has a diameter of and is named after Louth, County Louth, Louth, a town in Ireland.
Louth's characteristic feature is the persistent ice mound at the center of the crater. The central ice mound is the closest to the equator of all analogous features on the Martian surface, and of particular relevance to researchers studying climatic variability on the planet's surface. Many theories exist for the creation and persisting nature of the ice mound, with the predominant explanation being that of advected water vapor being deposited over the crater's surface by southwesterly winds. Due to its particular interest to scientists, two mission drafts have been proposed to explore the crater's makeup.
Discovery
First known from ''Viking program, Viking'' images featuring an anomalous albedo feature at the center of a crater in the northern plains of Mars, the deposit ...
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HRSC
High Resolution Stereo Camera (HRSC) is a camera experiment on ''Mars Express''. [DLR - HRSC on Mars Express]
A version for Earth called HRSC-AX was also developed, as was a version for Mars 96. [ It has four main parts: camera head, super resolution channel, instrument frame, and digital unit.][ At an altitude of 250 km from Mars, SRC can produce images with a resolution of 2.3 meters/pixel of 2.35 km square Mars terrain.][ It has 9 channels and can produce digital terrain models.][ A typical image from HRSC of Mars has a resolution ranging from 12.5 for nadir (directly down) to 25 m/pixel for the farthest off-nadir shots, which can be up to 18.9 degrees.]
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