Tim Brown demonstrates the coelostat

• UCAR Communications Records | Audio-Visual Materials, 1946-2018, undated | Photographic materials, 1946-2004, undated | Photographic negatives and slides, 1987-2003, undated | 1991 | (8292) High Altitude Observatory (HAO) eclipse viewing set-up, 1991-07-11

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Part of the National Center for Atmospheric Research (NCAR) Archives Repository