Open Access
Table 1
Components of the radiometric chain given for the medium spectral resolution R = 400.
| Source | Temperature [K] | Mean transmission | Contribution(a) [e− s−1] |
|---|---|---|---|
| Sky | 285.0 | 0.92 | 1.20e+05 |
| UT optics | 290.0 | 0.31 | 2.91e+06 |
| Warm optics | 285.0 | 0.60 | 2.20e+06 |
| Combiner | 100.0 | 0.50 | 1.69e-04 |
| Cold optics | 100.0 | 0.56 | 2.65e-04 |
| Enclosure | 100.0 | N.A. | 4.23e+05 |
| Dark current | 60.0 | N.A. | 1.07e+01 |
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