Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008pasp..120.1318m&link_type=abstract
The Publications of the Astronomical Society of the Pacific, Volume 120, Issue 874, pp. 1318-1324.
Astronomy and Astrophysics
Astronomy
Astronomical Phenomena And Seeing
Scientific paper
Optical turbulence was measured over Mauna Kea on the island of Hawaii using thermosondes suspended from ascending balloons. A sequence of nine balloons were launched, three each on the nights of 2002 December 12, 13, and 17. The results are used to determine a profile of ; then an integral of produces a profile of seeing, which clearly shows the altitudes that primarily contribute to the value of seeing at the summit of Mauna Kea. The results show that when seeing is generally good, then all altitudes contribute equally to the seeing. When the seeing is poor, several distinct altitudes are responsible. Further measurements were made simultaneously with a DIMM seeing monitor, located on the summit of Mauna Kea. The DIMM and the thermosonde show good agreement, although the thermosonde always underpredicts the seeing at the summit.
Chun Mark
Jumper George Y.
McHugh John P.
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