This newsletter, authored by Keith Watson, details the use of the coronagraph for the month of April 1961. Topics discussed include the figures for the coronagraph programs for the month, the Flare Patrol, the continued out-of-operation status of the K-Coronameter, infra-red image tube, and the t... Show moreThis newsletter, authored by Keith Watson, details the use of the coronagraph for the month of April 1961. Topics discussed include the figures for the coronagraph programs for the month, the Flare Patrol, the continued out-of-operation status of the K-Coronameter, infra-red image tube, and the third annual Climax Snowmelt Contest. Show less
