We evaluate the performance of the first generation scientific CMOS （sC- MOS） camera used for astronomical observations. The sCMOS camera was attached to a 25 cm telescope at Xinglong Observatory, in order to estima...We evaluate the performance of the first generation scientific CMOS （sC- MOS） camera used for astronomical observations. The sCMOS camera was attached to a 25 cm telescope at Xinglong Observatory, in order to estimate its photometric capabilities. We further compared the capabilities of the sCMOS camera with that of full-frame and electron multiplying CCD cameras in laboratory tests and observations. The results indicate the sCMOS camera is capable of performing photometry of bright sources, especially when high spatial resolution or temporal resolution is desired.展开更多
Low-light camera is an indispensable component in various°uorescence microscopy techniques.However,choosing an appropriate low-light camera for a speci¯c technique(for example,single molecule imaging)is alwa...Low-light camera is an indispensable component in various°uorescence microscopy techniques.However,choosing an appropriate low-light camera for a speci¯c technique(for example,single molecule imaging)is always time-consuming and sometimes confusing,especially after the commercialization of a new type of camera called sCMOS camera,which is now receiving heavy demands and high praise from both academic and industrial users.In this tutorial,we try to provide a guide on how to fully access the performance of low-light cameras using a well-developed method called photon transfer curve(PTC).We¯rst present a brief explanation on the key parameters for characterizing low-light cameras,then explain the experimental procedures on how to measure PTC.We also show the application of the PTC method in experimentally quantifying the performance of two representative low-light cameras.Finally,we extend the PTC method to provide o®set map,read noise map,and gain map of individual pixels inside a camera.展开更多
文摘We evaluate the performance of the first generation scientific CMOS （sC- MOS） camera used for astronomical observations. The sCMOS camera was attached to a 25 cm telescope at Xinglong Observatory, in order to estimate its photometric capabilities. We further compared the capabilities of the sCMOS camera with that of full-frame and electron multiplying CCD cameras in laboratory tests and observations. The results indicate the sCMOS camera is capable of performing photometry of bright sources, especially when high spatial resolution or temporal resolution is desired.
基金This work was supported by National Natural Science Foundation of China (Grant Nos.91332103,81427801)National Basic Research Program of China (Grant No.2015CB352003)+1 种基金the Program for New Century Excellent Talents in University of China (Grant No.NCET-10-0407)the Science Fund for Creative Research Group of China (Grant No.61421064)。
文摘Low-light camera is an indispensable component in various°uorescence microscopy techniques.However,choosing an appropriate low-light camera for a speci¯c technique(for example,single molecule imaging)is always time-consuming and sometimes confusing,especially after the commercialization of a new type of camera called sCMOS camera,which is now receiving heavy demands and high praise from both academic and industrial users.In this tutorial,we try to provide a guide on how to fully access the performance of low-light cameras using a well-developed method called photon transfer curve(PTC).We¯rst present a brief explanation on the key parameters for characterizing low-light cameras,then explain the experimental procedures on how to measure PTC.We also show the application of the PTC method in experimentally quantifying the performance of two representative low-light cameras.Finally,we extend the PTC method to provide o®set map,read noise map,and gain map of individual pixels inside a camera.
