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sábado, 29 de octubre de 2016

ESA : 15 years of Proba-1 .- Proba-1 view of Lena River Delta .- 15 años del Satélite Proba-1, vista del Río Lena



  • Title Proba-1 view of Lena River Delta
  • Released 27/10/2016 9:52 am
  • Copyright ESA
  • Description
    An icy close-up view of part of Russia’s Lena River Delta acquired by ESA’s veteran Proba-1 microsatellite, celebrating 15 years in orbit.
    The Lena River is the 11th longest river in the world. It empties into the Laptev Sea through a 32 000 sq km delta, the largest such delta in the Arctic.
    Protected as a wilderness reserve and nominated as a UNESCO World Heritage Site, the Lena River Delta spends much of the year frozen, but blossoms into a verdant wetland during the brief polar summer.
    The cubic-metre Proba-1 is the first in ESA’s series of satellites aimed at flight-testing new space technologies. It was launched on 22 October 2001 but is still going strong, having since been reassigned to ESA’s Earth observation duties.
    Proba-1’s main hyperspectral CHRIS imager records 15 m-resolution scenes across a programmable selection of up to 62 spectral bands, from a variety of viewing angles. CHRIS is supplemented by a 5 m-resolution black-and-white microcamera.
    Other innovations included what were then novel gallium-arsenide solar cells, the use of startrackers for gyroless attitude control, one of the first lithium-ion batteries – now the longest such item operating in orbit – and one of ESA’s first ERC32 microprocessors to run Proba-1’s agile computer.
    For more background on Proba-1, read this celebration in the ESA Bulletin.
    Proba-1 led the way for the Sun-monitoring Proba-2 in 2009, the vegetation-tracking Proba-V in 2013 and the Proba-3 precise formation-flying mission planned for 2019.
  • Id 367734


Guillermo Gonzalo Sánchez Achutegui
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