ESA Science & Technology - EChO Payload Definition Document

Publication date: 15 September 2012

Authors: EChO Team

Issue: 3
Year: 2012

Copyright: ESA

Reference: SRE-PA/2011.039/

This document aims at providing the description of the EChO reference payload complement. The payload complement comprises the following elements:

• The telescope
• The common optics, common in the sense that all alternative instrument designs must use this same set of fore-optics
• The instruments:
  • The science instrument, defined as a spectrometer covering the complete wavelength range required in [EChO MRD (Mission Requirements Document), SRE-PA/2011.038/]. This wavelength range is split into different science channels.
  • The Fine Guidance Sensor (FGS, acting as a non-scientific instrument), also required in [EChO MRD (Mission Requirements Document), SRE-PA/2011.038/] to answer the pointing needs of the spacecraft.