Site survey seeing tower

[Seeing Tower]

About this image

The seeing tower used during the site survey to find the best location for the first US national observatory. This was taken on Chevelon Butte, Arizona, in the mid 1950s, but is very similar to the one used on Kitt Peak. From the private collection of Dr Helmut Abt.

More: history page.

Minimum credit line: Helmut Abt/NOAO/AURA/NSF

Downloadable versions:
400 x 616 33 kb color JPEG (on this page)
1300 x 2000 304 kb color JPEG
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1300 x 2000 7.6 Mb 24-bit color TIFF
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