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Spectroscopy data acquisition and archiving overview

This document provides an overview of the hardware and software aspects of spectroscopy data acquisition and archiving. It covers synchronization signals, receiver systems, and calibration routines, including telescope chopping and nodding techniques for wideband and high-resolution spectrometers. The workflow for data reduction and archiving is outlined, detailing the tasks involved in managing SDFITS and CLASS FITS formats. Key features include amplitude calibration, spectrum generation, and configuration updates to ensure accurate data analysis and accessibility in observatory settings.

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Spectroscopy data acquisition and archiving overview

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  1. Spectroscopy data acquisition and archiving overview Hardware synchronization signals Receivers, Cal system Telescope Chop, nod Wideband Spectrometers High resolution Spectrometers Continuum (pointing) n m Receiver Tasks Spectrometer Tasks All data & info SDFITS archive CLASS FITS (temporary) CLASS Data file Observer Workstation Observatory, Housekeeping

  2. Spectroscopy data reduction and archiving software pipeline overview waspset zero cwsigs cwsigsinvert tcal Obs, Rx info Spectrometer uC Correlator offset vector Xfr function matrix Amplitude cal. vector Read current configuration Get data Subtract offsets Make spectrum Calibrate amplitude Write output files Update configuration SDFITS archive CLASS FITS Key: Action ASCII diagnostic File Program Hardware

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