Updates since Version 1.20
Version 1.20 (1 July, 1999) was the first proper release - previous versions were missing important sections on the TRACE instrument calibration.
Version 1.21 - (10 October, 1999)
Postcript file for A4 and US letter paper provided.
User Guide: Corrected some typos; Added addtional examples on struct_where, and new material on grid_data and tim2dset in reading and selecting data.
Instrument Guide: none.
Version 1.22 - (18 November, 1999)
User Guide: Corrected some typos; Updated and expanded section on trace_prep; some updates and clarification in diagnostics section.
Instrument Guide: none.
Version 1.23 - (15 February 2000)
Made this list available in Web version of the TAG. Added the Index to the PostScript version of the TAG.
User Guide: Corrected some typos; link to vignetting explanation; comment and link on atmospheric absortption; even more explicit statements about need for SSWDB files and packages/binaries branch of SSW; improved trace_prep writeup.
Instrument Guide: Removed paragraph under CCD properties relating to bad pixel map - it has now been implemented; removed typo - pedestal is DN not DN/sec; CCD noise less than 2-3 DN/s; added link to Diffraction Pattern report; added cooments on atmospheric absorption in image quality; added few other index records; many corrections/typos supplied by CJW.
Appendix: Added to section on eclipse season and atmospheric absorption.
Version 1.24 - (11 January 2001)
Introduction: Updated the references; corrected a couple of typos.
User Guide: Removed section about repairing TRACE images - routine never written and trace_decode now much better.
Appendix: Updated the URLs for the TAG: Lockheed to www.lmsal.com/ ~ bentley/guides/tag and MSSL to surfwww.mssl.ucl.ac.ul/guides/tag.
Added new section on searching for TRACE data which includes several URLs.