SCIENTISTS

Publications

  • NSClean: An Algorithm for Removing Correlated Read Noise from JWST NIRSpec Images

    ABSTRACT: NSClean is an algorithm and associated python package for removing faint vertical banding and “picture frame noise” from JWST Near Infrared Spectrograph (NIRSpec) images. NSClean uses known dark areas to fit a background model to each exposure in Fourier space. When the model is subtracted, it removes nearly all correlated noise. Compared to simpler strategies like subtracting the rolling median, NSClean is more thorough and uniform. NSClean is computationally undemanding, requiring only a few seconds to clean an image on a typical laptop.

    Download PDF (.8mb)
    Download Code NSClean rev1.9 .gz (Current Release 6mb)
    Download Code NSClean rev1.5 .gz (2mb)

  • Integrated Science Instrument Module NIRCam0077 - Redacted Radiation Testing of a NIRCam 5-micron Cutoff Sensor Chip Assembly
    Download PDF (3mb)

  • Improved Reference Sampling and Subtraction: A Technique for Reducing the Read Noise of Near-infrared Detector Systems, Journal Article, by B.J. Rauscher et al., April 2017
  • (Updated 11/6/15 to Rev. 2.6) Teledyne H1RG, H2RG, and H4RG Noise Generator, Publications of the Astronomical Society of the Pacific, by B.J. Rauscher, July 2015 Download .tar.gz software file
  • Status of the James Webb Space Telescope Integrated Science Instrument Module System, July 2011 (3.7 MB pdf)
  • "NASA's Detailed Response to the James Webb Space Telescope Independent Comprehensive Review Panel Report", June 2011 (194 KB pdf)
  • Detector Degradation Failure Review Board, April 2011 (784 KB .pdf)
  • James Webb Space Telescope (JWST) Test Assessment Team (TAT) FINAL REPORT, August 2010 (1.5 MB pdf)
  • "Finding the First Galaxies", Sky & Telescope, by J. Gardner, January 2010 (4.5 Mb pdf)
  • "Measurement of large cryogenic structures using a spatially phase-shifted digital speckle pattern interferometer", Applied Optics, by B. Saif, et al, February 2008 (View Abstract)
  • "The Dark Ages of the Universe", Scientific American, by A. Loeb, November 2006 (400 KB pdf)
  • The James Webb Space Telescope, Space Science Reviews, by J. Gardner et al, May 15, 2006 (external link)
  • "Viewpoint", Aviation Week & Space Technology, by B. Margon, March 27, 2006 (173 KB pdf)