First visible light measurements from the IOTA interferometer

被引：3

作者：

Coldwell, CM ^{[1
]}

Papaliolios, CD ^{[1
]}

Traub, WA ^{[1
]}

机构：

[1] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

来源：

ASTRONOMICAL INTERFEROMETRY, PTS 1 AND 2 | 1998年 / 3350卷

关键词：

stellar angular diameters; long baseline stellar interferometry;

D O I：

10.1117/12.317106

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

We present the results of the first stellar diameter measurements done in visible light (lambda = 665 nm) at the Infrared Optical Telescope Array (IOTA) located on Mt. Hopkins in southern Arizona. The data for these measurements were acquired using IOTA's "rapid scanning piezo mirror" which allows us to acquire complete interferograms at a rate of about two per second. The resulting frequency distribution of visibilities matches the theoretical statistical distribution from radio astronomy when no a priori criterion is used to select "good" scans. The interpretation of this result is difficult, however, due to the differences between the distributions of radio and optical fringe visibilities. Therefore, a very simple-minded selection criterion for "good" fringes is used in the final analysis, and the resulting diameter measurements are in close agreement with other published results.

引用

页码：424 / 431

页数：8