Atmospheric seeing measurement from bright star trails with frame transfer CCDs

Bin Ma; Zhaohui Shang; Yi Hu; Keliang Hu; Chong Pei; Xiangyan Yuan

doi:10.1117/12.2231928

27 July 2016 Atmospheric seeing measurement from bright star trails with frame transfer CCDs

Bin Ma, Zhaohui Shang, Yi Hu, Keliang Hu, Chong Pei, Xiangyan Yuan

Proceedings Volume 9906, Ground-based and Airborne Telescopes VI; 99060A (2016) https://doi.org/10.1117/12.2231928
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

Abstract

We present a new application of frame transfer Charge-Coupled Device (CCD) on measuring astronomical seeing. If a telescope is equipped with a shutterless, frame transfer CCD camera, a bright star will generate a trail during the frame transfer phase. Because the transfer is very fast, the trail is a series of short exposures (about 1 ms) of the target star. Therefore the centroid is jittery due to atmospheric turbulence, and the amplitude can be utilized to derive astronomical seeing. We present the preliminary results from STA1600FT CCD on the second Antarctic Survey Telescope (AST3) tested in China. The trail seeing moderately agrees with the simultaneous DIMM seeing.

Citation Download Citation

Bin Ma, Zhaohui Shang, Yi Hu, Keliang Hu, Chong Pei, and Xiangyan Yuan "Atmospheric seeing measurement from bright star trails with frame transfer CCDs", Proc. SPIE 9906, Ground-based and Airborne Telescopes VI, 99060A (27 July 2016); https://doi.org/10.1117/12.2231928

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