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The 150-Foot Solar Tower
Best of the Towercam
April 1, 2001

Extra telescopic view of the McMath-Pierce Solar Telescope!

During rare atmospheric conditions known as Alfvén Sub-Resonance Surface Tunneling, it is sometimes possible to see over the normal visual horizon. Probably because of the recent solar activity, this day we were able to see the large telescope of our colleagues at the National Solar Observatory in Tucson, Arizona!