Luc Dame
Luc Dame
Luc Dame
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Sky Brightness Monitor (SBM):<br />
a very small externally<br />
occulted coronagraph<br />
6 SBM were built for the ATST site testing.<br />
Using a SBM @ Dome C allows a direct<br />
comparison between the best classical<br />
coronagraphic sites and Dome C <br />
The occulter includes a neutral<br />
density (ND5 at Dome C) in the<br />
center of the external occulter to<br />
image the attenuated solar disk.<br />
9 0-rings reduce the amplitude<br />
of the diffraction ring in the<br />
image plane.<br />
Lin, H. & Penn, M., 2004, PASP, 116, 652
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