IRAC Instrument Handbook - IRSA - California Institute of Technology

2 32 38 150 92
0.6 a 180 210 630 250
0.4 b 360 430 1260 450
0.4 c 81 89 609 225
0.1 c 485 550 2010 690
0.02 c 7300 8600 25000 8100
Table 2.9: IRAC point-source sensitivity, medium background (1
σ, µJy).
Frame Time (sec) 3.6 µm 4.5 µm 5.8 µm 8 µm
200 0.49 0.97 6.4 8.2
100 0.73 1.4 9.3 12
30 1.6 2.8 18 21
12 3.6 5.3 31 34
2 32 38 150 110
0.6 a 180 210 640 260
0.4 b 360 430 1260 460
0.4 c 82 89 610 250
0.1 c 490 550 2020 720
0.02 c 7300 8600 25000 8100
Table 2.10: IRAC point-source sensitivity, high background (1 σ, µJy).
IRAC Instrument Handbook
Frame Time (sec) 3.6 µm 4.5 µm 5.8 µm 8 µm
200 0.89 1.5 9.8 12
100 1.3 2.1 14 18
30 2.5 4.1 27 32
12 4.8 7.1 44 52
2 34 41 180 156
0.6 a 180 220 660 330
0.4 b 360 430 1280 540
0.4 c 84 93 650 340
0.1 c 490 560 2100 860
0.02 c 7300 8600 25000 8200
a available only in high-dynamic-range mode.
b available only in stellar photometry mode.
c subarray mode (set of 64 32×32 images). Sensitivity is per frame, not the sensitivity of a 64-frame
coadd.
Instrument Description 20 Sensitivity and Saturation