CCD photometry

IRAF is the standard software for CCD photometry,and different values for aperture parameters and annulus are often selected in photometry,generally determined by FWHM,which directly influences the photometric errors.

CCD測光的標準處理軟件是iraf,而在測光中常常要選擇不同的測光孔徑參數apertur和annulus的值,一般來說它們的值由FWHM來決定,FWHM選取直接影響到測光誤差的大小,我們利用了云南天文臺1。

This article introduced CCD photometry with IRAF which is used specially for astronomic image and data processing based on our long-term research and use.

　文章對天文圖像和數據處理軟件IRAF在CCD測光中的使用做了介紹,在我們長期研究和使用該軟件的基礎上,對IRAF的CCD測光給出了我們研究與應用的結果,提出了最佳的參數設置,同時我們對IRAF在RedhatLinux中的安裝過程進行了探研與總結。

We can get many important physical parameters of the objects by CCD photometry, such as the visual magnitude, the color index, the curve of variability, the timescale of variability, the distribution of spectrum power of faint objects and so on.

通過CCD測光，可以直接得到天體的視星等、色指數、光變曲線、光變時標、暗星的光譜能量分布等重要的物理參數。

Research for integration time of CCD photometric and observation;

CCD測光觀測積分時間研究

On-line Inspection System for Coaxality Error of Journal Bearing Accessory Based on CCD;

基于CCD的滑動軸承套類零件同軸度誤差實時檢測系統

CCD-NIR Analysis of Acidity and Sugar Content in Apples;

蘋果中糖酸度的CCD近紅外光譜分析

A CCD Measuring System for the Rotary Precision of Spindle of Machine Tools;

機床主軸回轉精度的CCD測量系統

The optical system construction and working principles of intelligent north-finding gyroscope system based CCD(charge coupled device)image sensor and DSP(digital signal processing)technology is described.

介紹了基于CCD圖像傳感器與DSP技術的陀螺儀智能尋北系統的結構與工作原理,重點介紹了與DSP有關的電子硬件和軟件部分,尋北方法在DSP特定環境下的應用,給出了系統的硬件原理圖和軟件流程圖,最后總結了這套系統在陀螺儀尋北中的優點。

An instrument for auto measuring the width and length of wood board which based on the one-dimensional linear array CCD(charge coupled device)sensor and computer technique is introduced.

本文采用一維線陣CCD,利用照相機鏡頭成像的方法,通過調節鏡頭焦距就能獲得木材直徑的一維圖像,打破了其他檢測裝置用平行光掃描的局限性,消除了光線不平行帶來的誤差,省去了平行光產生、掃描、會聚裝置(如拋物鏡等),使復雜精密的光學系統簡單化,降低了成本。

Charge Coupled Devices Applied in Digital Storage Oscilloscopes;

CCD器件在數字存儲示波器中的應用

The driving schedule generator with optional output has been designed for CCD camera.

在分析了CCD器件驅動時序關系的基礎上,設計了可選輸出的驅動時序發生器。

It is not a negligent process of the calibration of CCD cameras in the processingimages which captured by CCD image system.

CCD 相機檢校是 CCD輸入影象處理的一個必不可少的過程。

A method using CCD camera and the laser triangulation principle to design a height adjusting system for laser cutti.

本文提出一種以CCD攝像機為檢測工具,以激光三角測量法為原理的激光切割機高度跟隨檢測系統的設計方案。

Analysis of the Aperture Photometry for Blazar;

Blazar短時標光變的孔徑測光分析

The calibrations of the CCD on HST WFPC2 are very important to improve the precision of astrometry and photometry.

對于哈勃空間望遠鏡(HST)來說,其廣角行星照相機(WFPC2)的CCD性能的數據處理校正對提高天體測量和測光結果的精度有著重要意義。

This thesis is concerned with space·-based high--resolution opticalimaging of globular cluster cores,and the subsequent application ofimage—restoration and crowded—field photometry techniques,thus we maygain an improved understanding of the nature of the dynamics of globularclusters and the galax.

本文主要利用哈勃太空望遠鏡(HST)的行星廣角照相機(WFPC2)對NGC6656的多歷元、多波段觀測資料來開展對該星團的高精度測光和動力學研究。