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Heinrich Hertz Submillimeter Telescope

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Through Electromagnetic spectrum, Electromagnetic radiation and Water vapor

The dryness of the air around and above Mount Graham is important for extremely high frequency (EHF) radio and far-infrared observations – a region of the spectrum where the electromagnetic waves are strongly attenuated by any water vapor or clouds in the air.

This telescope is used nine to ten months of the year, and it is stowed only when there is too much water vapor in the atmosphere, primarily during the summertime. This telescope is one of the telescopes that make up Mount Graham International Observatory.

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