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Orion...through the eyes of Spirit! (2) - Sol 632
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Original caption:"Because Spirit is in the Southern Hemisphere of Mars, Orion appears upside down compared to how it would appear to viewers in the Northern Hemisphere of Earth. "Star trails" in the longer exposures are a result of the Mars' rotation. The faintest stars visible in the 60" exposure are about as bright as the faintest stars visible with the naked eye from Earth (about magnitude 6 in astronomical terms). The Orion Nebula, famous as a nursery of newly forming stars, is also visible in these images. Bright streaks in some parts of the images aren't stars or meteors or unidentified flying objects, but are caused by solar and galactic cosmic rays striking the camera's detector.
Spirit acquired these images with the PanCam on Sol 632 (Oct. 13, 2005) at around 45 minutes past midnight MLT, using the camera's broadband filter (wavelengths of 739 nnmts plus or minus 338 nnmts)".
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