GETTING LUCKY WITH ADAPTIVE OPTICS: FAST ADAPTIVE OPTICS IMAGE SELECTION IN THE VISIBLE WITH A LARGE TELESCOPE
GETTING LUCKY WITH ADAPTIVE OPTICS: FAST ADAPTIVE OPTICS IMAGE SELECTION IN THE VISIBLE WITH A LARGE TELESCOPE
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幸运的是自适应光学:使用大型望远镜在可见光中快速自适应光学图像选择
DOI:
10.1088/0004-637x/692/1/924
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发表时间:
2009
期刊:
影响因子:
--
通讯作者:
Law N
中科院分区:
文献类型:
--
作者:
Law N
We describe the results from a new instrument which combines Lucky Imaging and adaptive optics (AO) to give the first routine direct diffraction-limited imaging in the visible on a 5 m telescope. With fast image selection and alignment behind the Palomar AO system we obtained Strehl ratios of 5%–20% at 700 nm in a typical range of seeing conditions, with a median Strehl of approximately 12% when 10% of the input frames are selected. At wavelengths around 700 nm the system gave diffraction-limited 35 mas full width at half-maxima (FWHMs). At 950 nm the output Strehl ratio was as high as 36% and at 500 nm the FWHM resolution was as small as 42 mas, with a low Strehl ratio but with resolution improved by a factor of∼ 20 compared to the prevailing seeing. To obtain wider fields we also used multiple Lucky Imaging guide stars in a configuration similar to a ground layer AO system. With eight guide stars but very undersampled data we obtained 300 mas resolution across a 30''× 30''field of view in the i'band.
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影响因子:
6.5
作者:
Tubbs, RN;Baldwin, JE;Cox, GC
通讯作者:
Cox, GC
DOI:
10.1111/j.1365-2966.2007.12675.x
发表时间:
2007-04
影响因子:
4.8
作者:
N. Law;S. Hodgkin;C. Caltech;Ioa;Cambridge
通讯作者:
N. Law;S. Hodgkin;C. Caltech;Ioa;Cambridge
影响因子:
2.3
作者:
C. Mackay;J. Baldwin;N. Law;P. Warner
通讯作者:
P. Warner
影响因子:
6.5
作者:
Baldwin J
通讯作者:
Baldwin J
影响因子:
3.7
作者:
M. Troy;R. Dekany;Gary L. Brack;B. Oppenheimer;E. Bloemhof;T. Trinh;F. Dekens;F. Shi;T. Hayward;B. Brandl
通讯作者:
B. Brandl