The Taurus Charge Shuffling system relies on three microprocessor systems - the CCD Controller, the Instrument Sequencer and the Taurus Controller. These microprocessors are co-ordinated by the Observer/Taurus control task running on the VAX, but there are direct real-time interactions between the three microprocessors which occur at a lower level.
The documents linked below are highly technical. If you are an observer
with an interest in getting to grips with charge shuffling, you must consult
JBH before attempting anything.
A Description of Taurus Charge Shuffling at the Microprocessor Level, L G Waller
This commentary provides a description of the operation of the Taurus Charge Shuffling operations,
and the inter-relation of the CCD Controller, the Instrument Sequencer and the Taurus Controller.
Charge Shuffling Readout (CSR), J R Barton
This is not so much a commentary as a rambling crib sheet for the cogniscenti.
Micro Tasks and Sequences for CSR, J R Barton -- IN PROGRESS --
This document lists the microcode commands used in the shuffle .csx files.
Web Tool for Making Shuffle Files, J Hawthorn -- IN PROGRESS --
You can see how the tool will work but it is still under construction so do not use yet!
Telescope Nod & Shuffle Mode, J A Bailey
This document outlines how to activate the nod & shuffle mode (recommended for afternoon techs).
Telescope Nod & Shuffle Mode, T J Farrell
This document outlines how to activate the nod & shuffle mode.
Telescope Control Commands for Wide Angle Nod & Shuffle Mode, S Lee
It is possible to nod the telescope over a much wider angle than allowed by the telescope
control thumb wheels, as this document shows.