Photometry and Polarimetry of the Solar Corona of 30 June 1973

The High Altitude Observatory's coronal camera successfully photographed the 30 June 1973 eclipse (from the National Science Foundation Eclipse Expedition Camp at Loiyengalani, Kenya) for the purpose of acquiring white light photometry, polarization, and high resolution, radially-graded filtered pictures of the inner corona. The method of reduction, its strengths and weaknesses, and suggestions for improvements are discussed.

Generally excellent agreement in white light photometry and polarimetry of the North Polar coronal region is most encouraging, while the discrepancies in other regions should provide insights into instrumental limitations or directions for future refinements.