3 Soft X-Ray Telescope (SXT)

The following sections are intended as an extension of the ``Red Book'' paper which describes the fundamentals of the Soft X-ray Telescope (SXT). We strongly recommend that first time users read ``The Soft X-Ray Telescope for the Solar-A Mission'' which is in Solar Physics 136, pp 37-67.

Many sections in this chapter refer to the SXT Calibration Notes. A partial set of these notes can be found in the $DIR_SXT_DOC directory. Users should send a mail message to the account specified in the preface of this document if they want copies of the notes.

• 3.1 Overall Response Function for SXT
  • 3.1.1 CCD Camera Signal
  • 3.1.2 SXT Effective Area
  • 3.1.3 Reading the SXT Effective Area File
  • 3.1.4 SXT Response to Thermal Plasma
  • 3.1.5 Reading the SXT Response Function File
  • 3.1.6 Relative Alignment of X-Ray and Optical Images
• 3.2 The CCD Camera
  • 3.2.1 Saturation Effects
  • 3.2.2 Effect of CCD Contamination
  • 3.2.3 SXT Images Taken with the CCD Warm
  • 3.2.4 Artifacts in Optical Images from Radiation Damage
  • 3.2.5 SAA Effects on Images
  • 3.2.6 Subtleties of Background Subtraction
  • 3.2.7 Charge Bleed-back
  • 3.2.8 CCD Pixelization
  • 3.2.9 What is Really Zero Signal Level in Data Numbers (DN)?
• 3.3 The Mirror, Lens or Filters
  • 3.3.1 Scattering by ND X-ray Filter
  • 3.3.2 Point Spread Function
  • 3.3.3 Mirror Scatter
  • 3.3.4 Vignetting Correction
  • 3.3.5 Stray Visible Light
• 3.4 Other Instrument and Operations Features
  • 3.4.1 Data Compression
  • 3.4.2 Use of Low-8 Images in Optical Data
  • 3.4.3 Filter Alternation During AEC
  • 3.4.4 The Roll Angle in the SXT Images
  • 3.4.5 Incorrect Location of Image Pieces in Some PFIs
  • 3.4.6 Preparation of SFD images
• 3.5 Contact Persons
• 3.6 References