Abstract
Extensive optical measurements were made of the Phenomenological Development and Structural Characteristics of five primary and four secondary high altitude barium releases of the 1971 ARPA Project SECEDE II Test Program. The objectives of these measurements were to gather data on the morphological development, details on ion cloud striations brightness profile vs time of the ion cloud emissions, and the development and motion history of the ion and neutral clouds. To this end, a wide array of photographic instrumentation was deployed at six widely separated sites. The main content of this report is a compilation of data record summaries for each site and event. Also included are several selected black and white photographs of the different events.

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