This document serves to provide metadata for a set of collocated documents
associated with the Wide Field Upgrade of the Hobby-Eberly Telescope.

* HETDEX Control System Workshop_2009_03_02_final.pdf
  - very early document with some explanation for the taxonomy of WFU HET TCS
    subsystems
  - tracker use cases

* fits-header-specification.txt
  - initial VIRUS output FITS header specification
  - maintained on MPE wiki for a while
  - current maintenance plan is unclear

* focal.xls
  - Walter/Cornell math about the PFIP probe arm/carriage geometry
  - this should be superseded by work by Martin Landriau maintained in the TCS
    repository

* HET Technical Reports 42, 42, 90
  - Tracker math

* HET Tracker Test Plan Review

* HET2-process-parameters.svg
  - Early moc up of how various pieces of info would get into VIRUS FITS headers

* HX0027-01-01 HETDEX & HET WFU SOFTWARE SPECIFICATION.doc
  - 2008 view of software specs

* HX0274-01-01 GUIDE PROBE TESTS.pdf

* IFU and Patrol Zone Layout.PDF

* metrology.pdf
  - 2018 flow chart of metrology systems logic and math

* mount.nb
  mount.pdf
  observations (2010_09_03).pdf
  - Pointing related math, now somewhat irrelevant to the actual code in
    some context
  - Superseded by Landriau in code

* tcs-offsets.pdf
  - Sketch describing how offsets are applied in the various modes of tracking
    and not tracking

* Tracker Coordinates 2010_07_08.pdf
  - Tracker math

* VDAS.docs.tar.bz2
  - Bundle of documentation presented as an on-boarding packet for new VIRUS
    readout software developer in 2012

* VIRUS.docs.tar.bz2
  - Everything we know about the VIRUS array design as delivered
  - There has been ongoing and significant evolution of hardware and microcode
    since Phillip's engagement, which is not captured in this documentation
    bundle