This newsletter, authored by Keith Watson, provides details about coronagraph observations for the month of January 1963. Watson comments on several topics, including: changes to the image tube that may improve observations, scattered light and aperture tests run on the 5", the freezing of the su... Show moreThis newsletter, authored by Keith Watson, provides details about coronagraph observations for the month of January 1963. Watson comments on several topics, including: changes to the image tube that may improve observations, scattered light and aperture tests run on the 5", the freezing of the suppressor plate on the flare patrol due to cold weather, the installation of a new corrector plate in the K-coronameter, and the first pictures with the 16" coronagraph through the Halle filter system. Show less
