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VST Data Processing

VST data processing status:

    • Commissioning (16 Aug 2011 - 14 Oct 2011)
    • P88 (15 Oct 2011 - 31 Mar 2012)
    • P89 (1 Apr 2012 - 30 Sep 2012)
    • P90 (1 Oct 2012 - 31 Mar 2013)
    • P91 (1 Apr 2013 - 30 Sep 2013)
    • P92 (1 Oct 2013 - 31 Mar 2014)
    • P93 (1 Apr 2014 - 30 Sep 2014)
    • P94 (1 Oct 2014 - 31 Mar 2015)
    • P95 (1 Apr 2015 - 30 Sep 2015)
    • P96 (1 Oct 2015 - 31 Mar 2016)
    • P97 (1 Apr 2016 - 30 Sep 2016)
    • P98 (1 Oct 2016 - 31 Mar 2017)
    • P99 (1 Apr 2017 - 30 Sep 2017)
    • P100 (1 Oct 2017 - 31 Mar 2018)
    • P101 (1 Apr 2018 - 30 Sep 2018)
    • P102 (1 Oct 2018 - 31 Mar 2019)
    • P103 (1 Apr 2019 - 30 Sep 2019)
    • P104 (1 Oct 2019 - 31 Mar 2020)
    • P105 (1 Apr 2020 - 30 Sep 2020)
    • P106 (1 Oct 2020 - 31 Mar 2021)
    • P107 (1 Apr 2021 - 30 Sep 2021)
    • P108 (1 Oct 2021 - 31 Mar 2022)

 

Rice image compression
CASU is using lossless Rice tile compression to store both the raw and reduced data. Rice compression is supported by CFITSIO and by DS9 (starting from version 5). You can use funpack to uncompress the images.

Astrometry
VST has  very low astrometric field distortion hence CASU is using a Tangent Plane projection (TAN) to encode the WCS astrometric calibration in the FITS headers.