Data Reduction/Analysis

• Analyzing Individual Scans - Examples of analyzing raw data scans.
• Reading Copernicus Files
• Early Project Memos - The following are early Copernicus memos (HTML versions courtesy of Jim Caplinger, CSC) describing various aspects of Copernicus data. The following individual articles are included:
  1. Stray Light in PEP - 8 December 1972
  2. Stray Light in PEP, II - 15 December 1972
  3. Scattered Light in U1 - 2 March 1973
  4. Background in Copernicus Data Tubes - 9 December 1974
  5. U1 Instrumental Profile - 11 April 1975
  6. Corrections to the U2 Wavelength Scale Between 1026 and 1110Å - 7 January 1976
  7. Spurious Emission Line Detection - 12 January 1976
  8. Sensitivity Loss in Copernicus - 8 September 1982
• Background Issues - a look at the sources of background counts in scans.
• Common Data Problems - including data register overflow, changes in the particle background (South Atlantic Anomaly), tracking errors, and other glitches.
• Photometric Reductions - describes the photometric corrections used for the Copernicus Spectral Atlases by Rogerson, et al. including a discussion on correcting for guidance variations.
• Observation Time Correction - describes the algorithm used to duplicate the start and end observation times found listed in old Copernicus computer printouts.