Diffraction-limited CCD imaging with faint reference stars
Diffraction-limited CCD imaging with faint reference stars
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DOI：
10.1051/0004-6361:20020477
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发表时间：
2002-05-01
影响因子：
6.5
通讯作者：
Cox, GC
中科院分区：
文献类型：
--
作者：
Tubbs, RN;Baldwin, JE;Cox, GC
通过选择具有可忽略读出噪声的CCD拍摄的短曝光图像，我们在2.56米望远镜上使用亮度大于I=16的附近参考星，获得了基本受衍射限制的810 nm微弱物体图像。这项技术的等行星斑块的半高宽被发现为50角秒，提供了类似于适当参考星周围20%的天空覆盖率。
By selecting short exposure images taken using a CCD with negligible readout noise we obtained essentially diffraction-limited 810 nm images of faint objects using nearby reference stars brighter than I=16 at a 2.56 m telescope. The FWHM of the isoplanatic patch for the technique is found to be 50 arcseconds, providing similar to20% sky coverage around suitable reference stars.