Table 3
VISIR filter characteristics.
| Filter | Central | Detector | Total exposure | Estimated* / | Extinction | Typical | Aperture |
| wavelenth | integration | time of nod | advertised | correction | FWHM of | correction | |
| (μm) | time (DIT) | pairs (s) | sensitivity | uncertainty | standard star | uncertainty | |
| (s) | (mJy/10σ/1 h) | (mag) | PSF (pixels) | (%) | |||
|
|
|||||||
| J8.9 | 8.70 | 0.0250 | 179.40 | 7.8/5 | 0.002 | 2.1 | 1.0 |
| B10.7 | 10.65 | 0.0125 | 180.55 | 8.2/8 | 0.002 | 2.3 | 0.4 |
| B11.7 | 11.52 | 0.0200 | 180.32 | 6.8/6 | 0.002 | 2.5 | 0.3 |
| B12.4 | 12.47 | 0.0125 | 180.55 | 13.5/12 | 0.002 | 2.7 | 1.5 |
Notes. Each filter is listed with its central wavelength, the detector integration time used, the total exposure time and the estimated sensitivity of the observations. The measured extinction coefficient uncertainty, width of the seeing profile of the standard stars and the uncertainty in the aperture correction are also listed.
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