==== The Cosmic Ice Laboratory ====

  * //**Main page:**// [[https://science.gsfc.nasa.gov/691/cosmicice/]]
  * //**Short description:**// database from the Astrochemistry laboratory (NASA GSFC) focused on low temperature Mid and Far-IR (2.5-100 µm) transmission spectra and optical constants of ices and small organic molecules and their mixtures
  * //**Access to data:**// [[https://science.gsfc.nasa.gov/691/cosmicice/spectra.html|IR Spectra]] - [[https://science.gsfc.nasa.gov/691/cosmicice/constants.html|Optical Constants from IR Spectra]]
  * //**Sample types:**// Ices, nitriles, hydrocarbons, small organic molecules and some simple mixtures
  * //**Spectra types:**// transmission/absorbance spectra and optical constants over the Mid-IR (400-4000 cm-1) and Far-IR (100-500 cm-1))
  * //**Search tools:**// Web pages with static lists of ice names
  * //**Data format:**// ASCII (.txt), binary SPC/Brucker (.SPC)
  * //**Preview format:**// pdf (.pdf)  
  * //**Metadata:**// limited: ice composition, sample thickness & growth rate, substrate, spectral resolution, formation and measurement temperature, reference...
  * //**Metadata format:**// in HTML page (.html) and part in header of data file (.txt)
  * //**Download:**// individual or series download
  * //**Notes:**// large number of ices, nitriles, hydrocarbons and complex organic molecules