Syntax highlighting of VIMS

.. image:: VIMS/vims-v-85c89-97213.jpg
   :height: 150
   :alt: [VIMS picture]

The Visual and Infrared Mapping Spectrometer (VIMS) is an instrument onboard the Cassini mission.

.. contents::

Instrument description
======================

VIMS included a pair of distinct imaging grating spectrometers that were designed to measure reflected and emitted radiation from atmospheres, rings and surfaces to determine their compositions, temperatures and structures.

 * VIMS-V (visible and near infrared line scan spectrometer) from 0.35 to 1.07 µm (96 bands)
 * VIMS-IR (infrared 2D scan spectrometer) from 0.85 to 5.1 µm (256 bands)
 * FOV: 32x32 mrad for both spectrometers
 * Mass: 37 kg

Important note: only the VIMS-IR data are present in PSUP portal.

Downloading and processing VIMS data
====================================

Imagery
-------

Tutorial
********

From the “Maps” tab, zoom-in on your region of interest. You can swith backgrounds for more visibility, and then display the VIMS layer. You can see the VIMS products footprints that appear in pink. Use the “Select” button to choose the products you desire over an area. Use the right-click context menu to add your selection to your workspace. 

.. image:: VIMS/select_vims.png
   :width: 800px

But given how dense and global is VIMS coverage, you might want to use the text search tab using keyworks "titan", "vims" and a coordinate.

.. image:: VIMS/search_vims.png
   :width: 800px

In the "Workspace" tab, you will see your product selection. VIMS images are already processed by its science team, MarsSI directly provide the map-projected products (MRDR).

Check the product status: if some data is not already done yet, select the rows you would like to request by ticking the input on the left column (you can use the "Select all" button to select all visible products) and click on the "Process" action on the top of the workspace table. You can check more information about the processing in the job tab if needed.

Once all the data you would like is done, select entries by ticking the input on the left column (you can use the "Select all" button to select all visible products) and click on the "Copy" action to request a copy of the data in your personal directory. You can then proceed to download products as described in the SFTP section.

License
*******

This dataset is distributed under a `CC-BY-4.0<https://creativecommons.org/licenses/by/4.0>`__ license with the following attribution: `NASA/Caltech-JPL/University of Arizona/Osuna-CNRS-Nantes Université`.

Pipeline information
********************

The data was processed by the `VIMS science team <https://vims.univ-nantes.fr/>`__ using an `ISIS-based procedure <https://vims.univ-nantes.fr/info/isis-calibration>`_ (click for more details).

Data description
================

Images
------

Directory content
*****************

The content of an VIMS product directory in MarsSI should look like: 

1686495872_1-G_101.jpg
  TODO
1686495872_1-G_203.jpg
  TODO
1686495872_1-G_212.jpg
  TODO
1686495872_1-G_501.jpg
  TODO
1686495872_1.log
  TODO
1686495872_1-R_159_126.jpg
  TODO
1686495872_1-R_203_210.jpg
  TODO
1686495872_1-RGB_203_158_279.jpg
  TODO
1686495872_1-RGB_231_269_195.jpg
  TODO
1686495872_1-RGB_277_327_332.jpg
  TODO
1686495872_1-RGB_501_158_129.jpg
  TODO
1686495872_1-RGB_501_275_203.jpg
  TODO
1686495872_1-RGB_501_332_322.jpg
  TODO
C1686495872_1_ir.cub
  TODO
v1686495872_1.lbl
  TODO
v1686495872_1.qub
  TODO

Georeferencing
**************

Georeferencing was done through orbital information.

References
==========

 * VIMS instrument description at NASA: https://science.nasa.gov/mission/cassini/spacecraft/cassini-orbiter/visible-and-infrared-mapping-spectrometer/
 * VIMS observation portal at LPG/OSUNA: https://vims.univ-nantes.fr/
 * Le Moulélic et al. (2019): The Cassini VIMS archive of Titan: From browse products to global infrared color maps (https://doi.org/10.1016/j.icarus.2018.09.017)
 * Brown et al. (2004): The Cassini VIMS archive of Titan: From browse products to global infrared color maps (https://doi.org/10.1007/s11214-004-1453-x)