Transcript
Quantum Efficiency Calibration of CCD on UV Band Qian Song, Zhiwei Feng, Yangbing Liu
Chinese National Astronomical Observatories
Setup of the UV calibration system
Lamp
CCD Camera
D
M2M1
M3
Collimator
Integrating-Sphere
Monochromator
Pinhole image on 245nm0 10000 20000 30000 40000 50000 60000 70000
0
10000
20000
30000
40000
50000
60000
Var
ian
ce/A
DU
Signal/ADU
Photon Transfer Curve gain4 @Gain Setting:4 Readout:Left
200 250 300 350 400
0.00E+000
1.00E-010
2.00E-010
3.00E-010
4.00E-010
5.00E-010
6.00E-010
P1 P2 P3 D
Cur
rent
of
D (
A)
Wavelength (nm)
stability of the light source
200 250 300 350 400
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
QE1 QE2 QE3
QE
Wavelength (nm)
Three tests of QE with an E2V 42-70 UV enhanced CCD.