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What is the faintest object visible in the HET?

April 26, 2017faintest het object visible

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What is the faintest object visible in the HET?

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(Dr. Shetrone): The faintest objects we have setup on is a quasar (not a star) that was at a redshift of Z=6.4, which makes it the 3rd most distant object ever observed. That target was very very red… I = 22.3 but V=26. The HET is completely limited by the darkness of the sky to image any target. We try to look where the object is the brightest and the sky is the faintest.