Sentinel-4 combined optial assemblies

Steffen Kirschstein; Torsten Hertel; Ute Gawronski; Steffen Rienecker; Eyk Gebhardt; Simon Chelkowski

doi:10.1117/12.2573015

20 September 2020 Sentinel-4 combined optial assemblies

Steffen Kirschstein, Torsten Hertel, Ute Gawronski, Steffen Rienecker, Eyk Gebhardt, Simon Chelkowski

Proceedings Volume 11530, Sensors, Systems, and Next-Generation Satellites XXIV; 115300E (2020) https://doi.org/10.1117/12.2573015
Event: SPIE Remote Sensing, 2020, Online Only

Abstract

Jena-Optronik has been contracted to develop and build the core main optics of the Sentinel-4/Ultra-violet/Visible/Near-Infrared (UVN) instrument, which comprises a telescope, a UV-VIS spectrometer and a NIR spectrometer. Due to its geo-stationary orbit and its compactness the photon flux seen by the instrument is low. Simultaneously the lens based optics of the instrument set new standards concerning performance. In consequence straylight levels within the instrument need to be reduced to the bare minimum including high quality polishing of the optics as well as manufacturing facilities as well as processes, which reduce the overall allowed contamination of the optical surfaces to be <50ppm for particular and <50ng/cm² molecular contamination.

Conference Presentation

Citation Download Citation

Steffen Kirschstein, Torsten Hertel, Ute Gawronski, Steffen Rienecker, Eyk Gebhardt, and Simon Chelkowski "Sentinel-4 combined optial assemblies", Proc. SPIE 11530, Sensors, Systems, and Next-Generation Satellites XXIV, 115300E (20 September 2020); https://doi.org/10.1117/12.2573015

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