Seeing, wind, and outer scale effects on image quality at the magellan telescopes

David Floyd, Jo Thomas-Osip, Gabriel Prieto

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24 Citations (Scopus)


We present an analysis of the science image quality obtained on the twin 6.5 m Magellan telescopes over a 1.5 yr period, using images of a??10 5 stars. We find that the telescopes generally obtain significantly better image quality than the DIMM-measured seeing. This is qualitatively consistent with expectations for large telescopes, where the wavefront outer scale of the turbulence spectrum plays a significant role. However, the dominant effect is found to be wind speed, with Magellan outperforming the DIMMs most markedly when the wind is strongest.
Original languageEnglish
Pages (from-to)731 - 742
Number of pages12
JournalPublications of the Astronomical Society of the Pacific
Issue number892
Publication statusPublished - 2010
Externally publishedYes

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