Translator Disclaimer
Paper
5 March 2003 Herschel PACS focal plane unit
Author Affiliations +
Abstract
The Photoconductor Array Camera and Spectrometer (PACS) is developed by an European consortium led by MPE, Germany. It is one of 3 cryogenic focal plane instruments of the Herschel Space Observatory, 1 of the 4 cornerstone missions within the ESA Horizon 2000 programme. The instrument will cover the wavelength regime from 60-210μm to explore the cold universe. The input beam is distributed to 4 advanced IR-detectors - 2 Ge:Ga photoconductor arrays for spectroscopy and 2 bolometer detector arrays for photometry - via a complex and very compact optomechanical layout with approx. 50 passive and active optical mirrors and 4 precision mechanisms. The paper will give an overview about the final optomechanical and thermal design of the thermal mass dummy and the cryo qualification model of the PACS Focal Plane Unit (FPU). The manufacturing and coating techniques of the lightweight aluminum mirrors applied to fulfill the infrared performance requirements even under cryogenic conditions and the alignment plan and optical verification concept in the visible range is outlined. The advanced manufacturing and thermal treatment procedures for the all aluminum optical bench are described in detail. Special emphasis is given to the dedicated development and verification efforts of a sophisticated IR Black Paint with extremely high IR-absorption used for effective straylight suppression. The conceptual architecture of the 2 very temperature stable and homogenous calibration sources is reported.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Roland Graue, Dirk Kampf, Albrecht Poglitsch, and Norbert Geis "Herschel PACS focal plane unit", Proc. SPIE 4850, IR Space Telescopes and Instruments, (5 March 2003); https://doi.org/10.1117/12.461601
PROCEEDINGS
12 PAGES


SHARE
Advertisement
Advertisement
RELATED CONTENT

Design Of A Support System For The Primary Mirror Of...
Proceedings of SPIE (July 18 1986)
Characterization of high and low stressed Ge Ga array...
Proceedings of SPIE (October 12 2004)
INCA a light 1 to 5 µm camera...
Proceedings of SPIE (September 30 2004)
Optical alignment and testing of the Michelle spectrometer
Proceedings of SPIE (August 21 1998)
Advanced cooled grating spectrometer for the UKIRT
Proceedings of SPIE (July 01 1990)

Back to Top