Submillimeter observations of the sun from the James Clerk Maxwell Telescope

Details Submillimeter observations of the sun from the James Clerk Maxwell Telescope Submillimeter observations of the sun from the James Clerk Maxwell Telescope

Apr 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...353l..53l&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 353, April 20, 1990, p. L53-L55.

Astronomy and Astrophysics

Astrophysics

15

Chromosphere, Solar Atmosphere, Submillimeter Waves, Sunspots, Infrared Telescopes, K Lines, Solar Granulation, Solar Observatories, Thermodynamic Equilibrium

Scientific paper

The first submillimeter solar observations from the 15 m James Clerk Maxwell Telescope (JCMT) on Mauna Kea are reported. The JCMT submillimeter heterodyne receiver is used to observe the sun in 850 micron radiation. These are the first submillimeter observations of features on the size scale of the chromospheric supergranular network and of sunspots. A comparison is made between 850 micron images and calcium K line images of the chromospheric supergranular network in the quiet sun and in plage. Images of sunspots are given, noting that their 850 micron brightness is comparable to, or somewhat greater than, that of the quiet sun.

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