ASTM-E491 Complete Document History
Standard Practice for Solar Simulation for Thermal Balance Testing of Spacecraft

Complete Current Edition:
   1973 R20 EDITION - REAPPROVED IN 2020 - Dec. 10, 2020

Obsolete Revision Information:
   1973 R15 EDITION - REAPPROVED IN 2015 - Dec. 15, 2015
   1973 R10 EDITION - REAPPROVED IN 2010 - May 1, 2010
   1973 R04(E1) EDITION - EDITORIALLY CORRECTED - Feb. 1, 2005
   1973 R04 EDITION - REAPPROVED IN 2004 - Sept. 1, 2004
   1973 R80(E1) EDITION - SOLAR SIMULATION FOR THERMAL B - Sept. 27, 1973
   1973 R99 EDITION - REAPPROVED IN 1999 - Sept. 27, 1973