PCO Articles

  1. Technical Note: Warm Or Hot Pixels: Explanation And Methods To Replace Them
    8/18/2008
    The Technical term warm or hot pixel describes a CCD characteristic that can be observed when long exposure times are used (generally >3s, although this can vary from chip to chip).
  2. Technical Note: Overview On Noise Sources In A CCD Camera System
    8/18/2008
    Noise is an unwanted signal, either contained in the relevant light signal or added to it by the imaging process. Noise prevents accurate measurement and evaluation of the light signal distribution (image). Noise usually comes from three main sources.
  3. Technical Note: How To Understand Dynamic Range And The Influence On Imaging Applications
    8/18/2008
    The dynamic or dynamic range of a CCD-camera system is a widely used term to characterize the ability of a camera system to measure or image light/dark differences.
  4. White Paper: Study Of Magnetic Helicity Injection Via Plasma Imaging Using A High-Speed Digital Camera
    7/23/2007
    The evolution of a plasma generated by a novel planar coaxial gun is photographed using a state-of-the-art digital camera, which captures eight time-resolved images per discharge. This experiment is designed to study the fundamental physics of magnetic helicity injection, which is an important issue in fusion plasma confinement as well as solar and astrophysical phenomena such as coronal mass ejections and accretion disk dynamics
  5. Study Of Magnetic Helicity Injection Via Plasma Imaging Using A High-Speed Digital Camera
    7/23/2007
    The evolution of a plasma generated by a novel planar coaxial gun is photographed using a state-of-the-art digital camera, which captures eight time-resolved images per discharge. This experiment is designed to study the fundamental physics of magnetic helicity injection, which is an important issue in fusion plasma confinement as well as solar and astrophysical phenomena such as coronal mass ejections and accretion disk dynamics
  6. Shading In Large Image Sensors ...Why Are The Corners Of My Image So Black?
    7/23/2007
    The technical term "shading" describes the light fall-off observed towards the edges of an image. When applied to a digital camera system, "shading" describes the result of various physical phenomena such as lens vignetting and the angular dependence of quantum efficiency due to the use of microlenses
  7. Application Note: Shading In Large Image Sensors ...Why Are The Corners Of My Image So Black?
    7/23/2007
    The technical term "shading" describes the light fall-off observed towards the edges of an image. When applied to a digital camera system, "shading" describes the result of various physical phenomena such as lens vignetting and the angular dependence of quantum efficiency due to the use of microlenses
  8. White Paper: A Laboratory Plasma Experiment For Studying Magnetic Dynamics Of Accretion Discs And Jets
    6/27/2007
    This work describes a laboratory plasma experiment and initial results which should give insight into the magnetic dynamics of accretion discs and jets. A high-speed multiple-frame CCD camera reveals images of the formation and helical instability of a collimated plasma, similar to MHD models of disc jets, and also plasma detachment associated with spheromak formation, which may have relevance to disc winds and flares
  9. A Laboratory Plasma Experiment For Studying Magnetic Dynamics Of Accretion Discs And Jets
    6/27/2007
    This work describes a laboratory plasma experiment and initial results which should give insight into the magnetic dynamics of accretion discs and jets. A high-speed multiple-frame CCD camera reveals images of the formation and helical instability of a collimated plasma, similar to MHD models of disc jets, and also plasma detachment associated with spheromak formation, which may have relevance to disc winds and flares
  10. Application Note: PLIF Technique For Fuel Visualization In Engines And Its Role In Retrofit Technology
    6/27/2007
    A problem in large-bore, slow-speed, natural gas two-stoke cycle engines is poor incylinder mixing processes caused by ineffective fuel delivery. To address the mixing problem, a visualization technique is needed to image the fuel in the cylinder, or combustion chamber