کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8173589 1526339 2015 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A new technique of characterization of intrapixel response dedicated to astronomical detectors
ترجمه فارسی عنوان
یک روش جدید برای مشخص کردن پاسخ درون پیکسل به آشکارسازهای نجومی است
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم ابزار دقیق
چکیده انگلیسی
This paper is devoted to the presentation of a new technique of characterization of the intra-pixel sensitivity variations (IPSVs) of astronomical detectors. The IPSV is the spatial variation of the pixel response function (PRF). In the case of under-sampled instruments for high quality imaging and accurate photometry, IPSV can contribute to the instrument global error and it should be considered carefully. Our measurement technique is based in the Fourier transform (FT) approach. It consists into the sampling of the pixel transfer function (PTF) by projecting high-resolution periodic patterns onto the whole sensor without classic optics but using the self-imaging property (the Talbot effect) of a continuously self imaging grating (CSIG) illuminated by a plane wave. The PRF is determined by computing the inverse FT. Our measurement technique permits to determine the PRF with a resolution of pixel/10 (10 times Nyquist frequency).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 787, 1 July 2015, Pages 265-269
نویسندگان
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