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Improved Reduction Algorithm for ISOPHOT-S Chopped Observations

Schulz, Bernhard (2005) Improved Reduction Algorithm for ISOPHOT-S Chopped Observations. In: Astronomical Data Analysis Software and Systems XIV. ASP Conference Series. No.347. Astronomical Society of the Pacific , San Francisco, CA, pp. 163-167. ISBN 1-58381-215-6.

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The astronomical data gathered by the extrinsic photoconductors on-board the ISO satellite were greatly affected by the high energy radiation environment in space. In addition so called transients with long time constants make automated pipeline processing of the data a challenge. ISOPHOT-S is the high sensitivity spectrometer of the ISOPHOT instrument, featuring two 64 element Si:Ga arrays for the wavelength range of 2.5 to 11.6 microns. It collected a wealth of almost 300 observations of extragalactic nuclei at a spectral resolution of ~100. Most of those observations were performed using the chopped observing mode, justifying a dedicated effort to revise and improve the automatic processing techniques in order to derive a homogeneously reduced dataset with realistic uncertainties. The improvements compared to the original standard pipeline processing include techniques like ramp subdivision, smoothed sigma kappa deglitching, spike filtering and accounting for a non-Gaussian signal distribution due to the glitch residuum.

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Additional Information:© 2005 Astronomical Society of the Pacific.
Series Name:ASP Conference Series
Issue or Number:347
Record Number:CaltechAUTHORS:20110810-154218043
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:24794
Deposited By: Tony Diaz
Deposited On:12 Sep 2011 16:33
Last Modified:03 Oct 2019 03:00

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