Thursday 12 August 2021

More solar observing with a Cooke


A . M. Newbegin, Sutton, Surrey. 6-inch Cooke photo-visual equatorial refractor, Evershed prism spectroscope.—Work on the height and position of the solar prominence s has been continued on the same lines as in former years. The results for 1923 indicate that the solar minimum is past, and the activity is now on the upgrade. There is still no great activity in the prominence as a whole, but at intervals metallic outbursts of some strength have been observed. A detailed account of the observation s for the year is being prepared for publication. The new high-power spectroscope is nearly ready for final adjustment.

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