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Identification of ten new Galactic HII regions

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Science China(Physics,Mechanics & Astronomy) 2010年第6期53卷 1144-1152页

作者： RUAN GuiPing 1,2 & SHI WeiBin 1,2 1 Shandong Provincial Key Laboratory of optical Astronomy and Solar-Terrestrial Environment,School of Space Science and Physics,Shandong University at Weihai,Weihai 264209,China 2 Key Laboratory of optical Astronomy,National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100012,China Shandong Provincial Key Laboratory of optical Astronomy and Solar-Terrestrial Environment School of Space Science and Physics Shandong University at Weihai Weihai China Key Laboratory of optical Astronomy National Astronomical Observatories Chinese Academy of Sciences Beijing China

We discovered ten large HII regions in the Sino-German λ6 cm polarization survey of the Galactic plane. They have been identified according to their flat spectral indexes and the high ratio between the 60 μm infrared emission and the λ6 cm emission. The integrated flux densities as well as the sizes of these sources are given at 4800 MHz. Cross-identifications are made with other major radio catalogs.

关键词： radio continuum general-methods observational-HII regions

optical system transmittance detection base on the cross-correlation technique

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Optical system transmittance detection base on the cross-cor...

2008 international conference on optical instruments and technology

作者： Dawei Feng Changchun University of Science and technology,No.7186 WeiXing Road,Changchun,Jilin Province,P.R.China 130022

The optical system transmittance is the ratio of optical instrument emergent light flux with incident light flux,and embodies the ability that transmitting light radiant energy of an optical *** is an important performance index in optical system,especially in the telescopic optical *** order to decrease the effect of the backlight,the traditional single channel detection method must be achieved in the *** it can not avoid the interference of 1/f noise and the illuminant wave because the detected signal is direct current signal,and the detecting accuracy is *** paper proposes an optical transmittance detecting method with double beams and double frequencies based on the correlation detection *** method avoid the influences of 1/f,background light and illuminant wave effectively because of adopting the correlation detecting technology,and it not only can achieve the detecting in the bright field,but also improves the detecting accuracy finer than 1%,and could replace the single channel detection method that adopted at present.

关键词： optical detecting technique transmittance lock-in amplifier visible light

Research on aberration theory of star track systems

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Research on aberration theory of star track systems

2008 international conference on optical instruments and technology

作者： Chang Jun~() (1,Beijing institute of technology,Beijing 100081) (2,Beijing institute of controller,Beijing 10032)

CCD star tracker is a key equipment of *** works at a broad range of wavelength,from visible wavelength to near *** we just try to analyze the influence of aberrations based on an actual system(focal length:120mm,F number:1.3,field of view:12deg,wavelength range:0.45 micron to 0.85 micron).A double Gauss system is used to decrease the chromatic aberration while other aberrations are also controlled very *** result shows that we can get some conclusions about the influence of coma which is the most significant aberration in this system

关键词： Aberration theory star tracker optical design

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光电工程 2008年第7期35卷 F0002-F0002,F0003页

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光电工程 2008年第4期35卷 F0002-F0002,F0003页

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光电工程 2008年第5期35卷 F0002-F0002,F0003页

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光电工程 2008年第6期35卷 F0002-F0002,F0003页

Dynamic analysis of piezoelectric-solid-liquid coupled system of micro nebulizer

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Dynamic analysis of piezoelectric-solid-liquid coupled syste...

2008 international conference on optical instruments and technology

作者： Ming-wei Yang~(*a),Zhao-ying Zhou~a a Department of Precision instruments,Tsinghua University,Beijing,China 100084

Piezoelectric micro nebulizer is a typical piezoelectric-solid-liquid coupling problem.A 2D FEM model was presented for this *** results show that when the piezoelectric actuator is vibrated,nozzle film also is generated vibration,and the phase relationship occurs to them,and the operation at the second resonance frequency is more desirable than others.A good agreement between experimental results and theoretical results confirmed the validity of the theoretical model we ***,the design of micro nebulizer to consider only the amplitude of piezoelectric vibration is not comprehensive,we must also consider the nozzle film vibration,as well as the phase between the back film and the nozzle film,and this can provide guidance for the optimal design of micro nebulizer.

关键词： Micro nebulizer structure-liquid coupling MEMS

Micro sensors based on Planar Microtoroid cavities

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Micro sensors based on Planar Microtoroid cavities

2008 international conference on optical instruments and technology

作者： Jijun XIONG~a,Yingzhan YAN~a,Zhe JI~a,Shaohui WANG~a,Shubin YAN~(*a,b), Xiongying Ye~b,Zhaoying Zhou~b,Wendong ZHANG~a a National Key Laboratory For Electronic Measurement technology,North University Of China, Taiyuan,China 030051 b State Key Laboratory of Precision Measurement technology and instruments,Department of Precision instruments and Mechanology,Tsinghua University,Beijing,China 100084

Planar Microtoroid cavities with ultrahigh quality factor have very strong confined function to the electromagnetic wave coupled into them due to their novel ring-like ***,they have very good applications in high sensitivity sensors and other micro optics *** this paper,the Planar Microtoroid cavity and its coupling system constructed together with the tapered fiber are ***,micro sensors based on the above coupling system are *** sensors measure environmental parameters by means of monitoring the changes in the transmission spectrum of the high finesse Planar Microtoroid cavities,obtaining fine resolution and high accuracy due to their ultrahigh quality factor(Q)*** sensitive mechanism and the feasibility are demonstrated through optical and mechanical software *** software BeamPROP,the evident resonance and strengthened phenomenon to the electromagnetic wave coupled into the micro-cavity are shown,which have a big relation with the light frequency. The results indicate that,Planar Microtoroid cavity is very promising in designing new micro sensors.

关键词： Planar Microtoroid cavity coupling system micro sensor sensitivity