Loading...
Please wait, while we are loading the content...
Similar Documents
Noise properties and signal-dependent interpixel crosstalk of the detectors of the Near-Infrared Spectrograph of the James Webb Space Telescope
| Content Provider | Semantic Scholar |
|---|---|
| Author | Giardino, Giovanna Sirianni, Marco Birkmann, Stephan M. Rauscher, Bernard J. Lindler, Don J. Boeker, Torsten Ferruit, Pierre Marchi, Guido De Stuhlinger, Martin E. Jensen, Peter Lundholm Strada, Paolo |
| Copyright Year | 2013 |
| Abstract | Abstract. The Near-Infrared Spectrograph (NIRSpec) is one of the four science instruments of the James Webb Space Telescope. Its focal plane consists of two HAWAII-2RG sensors operating in the wavelength range of 0.6 to 5.0 µm and, as part of characterizing NIRSpec, the noise properties of these detectors under dark and illuminated conditions were studied. Under dark conditions, and as already known, 1/f noise in the detector system causes somewhat higher noise levels than can be accounted for by a simple model that includes white read noise and shot noise on integrated charge. More surprisingly, for high levels of accumulated charge, significantly lower total noise than expected was observed. This effect is shown to be due to pixel-to-pixel correlations introduced by signal-dependent interpixel crosstalk, with an interpixel coupling factor, α, that ranges from ∼0.01 for zero signal to ∼0.03 close to saturation. |
| File Format | PDF HTM / HTML |
| DOI | 10.1117/1.OE.52.3.034001 |
| Volume Number | 52 |
| Alternate Webpage(s) | https://dms.cosmos.esa.int/COSMOS/doc_fetch.php?id=3372220 |
| Alternate Webpage(s) | https://doi.org/10.1117/1.OE.52.3.034001 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
