23 June 2006 High accuracy DIMM measurements for the TMT site testing program
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Abstract
Differential Image Motion Monitors (DIMMs) have become the industry standard for astronomical site characterization. The calibration of DIMMs is generally considered to be routine, but we show that particular care must be paid to this issue if high accuracy measurements are to be achieved. In a side by side comparison of several DIMMs, we demonstrate that with proper calibration we can characterize the seeing to better than ±0.02 arcseconds.
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Lianqi Wang, Matthias Schöck, Gary Chanan, Warren Skidmore, Edison Bustos, Juan Seguel, Robert Blum, "High accuracy DIMM measurements for the TMT site testing program", Proc. SPIE 6267, Ground-based and Airborne Telescopes, 62671S (23 June 2006); doi: 10.1117/12.673025; https://doi.org/10.1117/12.673025
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