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TSST Full Disk Velocity Maps
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.. contents:: Table of contents

The TSST potassium MOF-based channel operate at 769.9 nm, sounding an atmospheric layer about 300–400 km over the solar photosphere. The TSST acquires simultaneously photospheric LoS velocity and magnetic maps with a maximum cadence of 15 s.

References
~~~~~~~~~~



Dataset summary
~~~~~~~~~~~~~~~

.. list-table::

  * - **internal_name:**
    - unitov_vel_tsst_image
  * - **publisher:**
    - University of Rome Tor Vergata
  * - **alph_code:**
    - 1B
  * - **id_tmp:**
    - 61
  * - **short_name:**
    - TSST-vel
  * - **identifier:**
    - aspis:///unitov/vel_tsst_image
  * - **dynamic:**
    - data collection grows in time. Bulk size estimated on 1 yr. Cadence: at least one image per day in clear weather conditions (up to 5/8 per day) one image every 5 s for some minutes (<60 minutes) during flares
  * - **size:**
    - 300GB
  * - **format:**
    - .fits
  * - **type:**
    - image
  * - **records_number:**
    - 10
  * - **time_start:**
    - 2022-09-01
  * - **time_stop:**
    - 2023-05-01
  * - **spatial:**
    - SUN
  * - **messenger:**
    - photons
  * - **spectral_min:**
    - 769.88
  * - **spectral_max:**
    - 769.92
  * - **spectral_units:**
    - nm
  * - **observable:**
    - phys.veloc,AR
  * - **latest update:**
    - 2024-03-28 05:08:18

Columns specification
~~~~~~~~~~~~~~~~~~~~~

.. list-table:: 
   :widths: 7 20 15 10 48
   :align: right 
   :header-rows: 1

   * - progr
     - column
     - units
     - type
     - description
   * - 1
     - time
     - UTC
     - datetime
     - UTC - datetime - Acquisition time
   * - 2
     - Quality
     - 0-1
     - float
     - Quality of the image 0-1 0=bad, 1=OK
   * - 3
     - X_cen
     - pixel
     - int
     - Position of the Solar centre on the X image axis [pixels]
   * - 4
     - Y_cen
     - pixel
     - int
     - Position of the Solar centre on the Y image axis [pixels]
   * - 5
     - R_sun
     - pixel
     - int
     - Radius of the Solar disk [pixels]
   * - 6
     - min
     - m/s
     - float
     - minimum value of the image [ADU]
   * - 7
     - Max
     - m/s
     - float
     - maximum value of the image [ADU]
   * - 8
     - mean
     - m/s
     - float
     - average value of the image [ADU]
   * - 9
     - std
     - m/s
     - float
     - standard deviation value of the image [ADU]
   * - 10
     - B0
     - deg
     - float
     - apparent tilt of the sun's axis of rotation with respect to the ecliptic [degrees]
   * - 11
     - data_name
     - char
     - string
     - the name of the file with the data
   * - 12
     - prew_name
     - char
     - string
     - the name of the full preview file
   * - 13
     - thumb_name
     - char
     - string
     - the name of the thumbnail file
