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Basic radiometry and SNR eq. for CCD, ICCD - UNIS

Basic radiometry and SNR eq. for CCD, ICCD - UNIS

Basic radiometry and SNR eq. for CCD, ICCD - UNIS

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Where are my photons?<br />

• Transmittance (atmosphere, optics, filters. . . )<br />

• Apperture of the optics<br />

• Area of detector (pixel-area <strong>for</strong> imagers)<br />

• Number of photoelectrons collected in a pixel<br />

n −<br />

e = QE(λ)Eγi γ tintApix<br />

−<br />

e <br />

(44)<br />

(45)<br />

n e − γ ≈ QE(λ)TtintApix<br />

10 10 I<br />

16f 2 #<br />

e − <br />

<strong>UNIS</strong> 2011-11-15 – p. 59

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