Effects of Additional Noise of an Electron-Multiplying CCD on Astronomical High-Resolution Imaging

Zhang Xiangbo; Jin Zhenyu

Astronomical Research and Technology > 2013 > 10(1): 62-68.

Zhang Xiangbo, Jin Zhenyu. Effects of Additional Noise of an Electron-Multiplying CCD on Astronomical High-Resolution Imaging[J]. Astronomical Research and Technology, 2013, 10(1): 62-68.

Citation:

Zhang Xiangbo, Jin Zhenyu. Effects of Additional Noise of an Electron-Multiplying CCD on Astronomical High-Resolution Imaging[J]. Astronomical Research and Technology, 2013, 10(1): 62-68.

Citation:

Zhang Xiangbo, Jin Zhenyu. Effects of Additional Noise of an Electron-Multiplying CCD on Astronomical High-Resolution Imaging[J]. Astronomical Research and Technology, 2013, 10(1): 62-68.

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Effects of Additional Noise of an Electron-Multiplying CCD on Astronomical High-Resolution Imaging

Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China

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Received Date: March 04, 2012
Revised Date: May 16, 2012
Published Date: January 14, 2013

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Abstract

Abstract

Based on the discussion of generating mechanisms and characteristics of additional noise of an Electron-Multiplying CCD, we use simulations to analyze the effect of the noises on the Astronomical High-Resolution Statistical Reconstruction Method (Speckle Interferometry). We compare our analysis to experimental results. We show that the bias introduced by the additional noise reduces the Signal-to-Noise Ratio of Speckle Interferometry when the object is faint. The bias seriously affects the results of reconstruction and must be corrected. It can be clearly seen from the result of reconstruction of real data that our noise-bias correction can effectively remove the effects an of EMCCD additional noise on the reconstruction of the autocorrelation or power spectrum of an object image in the Speckle Interferometry.

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References (13)

References

[1]	A Labeyrie. Attainment of diffraction-limited resolution in large telescopes by Fourier analyzing speckle patterns in star images[J]. Astronomy and Astrophysics, 1970, 6: 85-87.
[2]	A O'Grady. A comparison of EMCCD, CCD and emerging technologies optimized for low light spectroscopy applications[C]//Mahadevan-Jansen, Petrich, Wolfgang H. Biomedical Vibrational Spectroscopy III: Advances in Research and Industry. Proceedings of the SPIE, 2006, 6093: 183-191.
[3]	A G Basden, C A Haniff, C D Mackay. Photon counting strategies with low-light-level CCDs[J]. Monthly Notices of the Royal Astronomical Society, 2003, 345(3): 985-991.
[4]	F Hormuth, S Hippler, W Brandner, et al. AstraLux: the calar alto lucky imaging camera[J]. Proceedings of SPIE, 2008, 7014: 7873-7884.
[5]	Robert N Tubb. Lucky exposures: diffraction-limited astronomical imaging through the atmosphere[M]. Cambridge: Cambridge University Press, 2003.
[6]	N M Law. Lucky imaging: diffraction limited imaging from the ground in the visible[M]. Cambridge: Cambridge University Press, 2007.
[7]	M S Robbins, B J Hadwen. The noise performance of electron multiplying charges coupled devices[J]. IEEE Transations on Electron Devices, 2003, 50(8): 1227-1232.
[8]	E2V technologies. Low-light technical note 4: dark signal and clock-induced charge in L3Vision^TM CCD sensors[EB/OL].[2012-03-05]. http://www.e2v.com/e2v/assets/File/documents/imaging-space-and-scientific-sensors/Papers/low_light_tn4.pdf.
[9]	Mackay C D, Tubbs R N, Bell R, et al. Sub-electron read noise at MHz pixel rates[J]. SPIE, 2001, 4306: 289-298.
[10]	O Daigle, C Carignan, J Gach, et al. Extreme faint flux imaging with an EMCCD[J]. Publications of the Astronomical Society of the Pacific, 2009, 121: 866-884.
[11]	O Daigle, C Carignan, S Blais-Ouellette. Faint flux performance of an EMCCD[C]//David A Dorn,Andrew D Holland. High Energy, Optical, and Infrared Detectors for Astronomy II. Proceedings of SPIE, 6276: 62761F-62769F.
[12]	Imag E M. EM-CCD Technical Note[EB/OL].[2012-03-05]. http://www.photonicsonline.com/doc.mvc/EM-CCD-0001.
[13]	Michael C Roggemann, Byron M Welsh. Imaging through turbulence[M]. CRC Press, 1996.