Diffraction-limited CCD imaging with faint reference stars

被引：40

作者：

Tubbs, RN

Baldwin, JE

Mackay, CD

Cox, GC

机构：

[1] Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England

[2] Univ Cambridge, Cavendish Lab, Cavendish Astrophys Grp, Cambridge CB3 0HE, England

[3] Nord Opt Telescope, E-38700 Santa Cruz De La Palma, Canarias, Spain

来源：

ASTRONOMY & ASTROPHYSICS | 2002年 / 387卷 / 02期

关键词：

techniques : high angular resolution instrumentation : detectors; globular clusters : individual : M 13;

D O I：

10.1051/0004-6361:20020477

中图分类号：

P1 [天文学];

学科分类号：

0704 [天文学];

摘要：

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.

引用

页码：L21 / L24

页数：4

共 5 条

[1]

Diffraction-limited 800 nm imaging with the 2.56 m Nordic Optical Telescope [J].