MIRI Telescope Simulator
- Paper number
IAC-07-A3.1.07
- Author
Mr. Tomás Belenguer, Instituto Nacional de Tecnica Aerospacial (INTA), Spain
- Coauthor
Ms. Eva Diaz, Instituto Nacional de Tecnica Aerospacial (INTA), Spain
- Coauthor
Ms. Ana Aricha, Instituto Nacional de Tecnica Aerospacial (INTA), Spain
- Coauthor
Ms. Maria Ángeles Alcacera, Instituto Nacional de Tecnica Aerospacial (INTA), Spain
- Coauthor
Mrs. Maria del Rosario Canchal, Instituto Nacional de Tecnica Aerospacial (INTA), Spain
- Coauthor
Ms. Inmaculada Figueroa, Instituto Nacional de Tecnica Aerospacial (INTA), Spain
- Coauthor
Ms. Ana Balado, Instituto Nacional de Tecnica Aerospacial (INTA), Spain
- Coauthor
Ms. María Colombo, Instituto Nacional de Tecnica Aerospacial (INTA), Spain
- Year
2007
- Abstract
MIRI Telescope Simulator
The MTS, MIRI Telescope Simulator, is developed by INTA as the Spanish contribution of MIRI (Mid InfraRed Instrument) on board JWST (James Web Space Telescope).
The MTS is considered as optical equipment which is part of Optical Ground Support Equipment for the AIV/Calibration phase of the instrument at Rutherford Appleton Laboratory, UK.
It is an optical simulator of the JWST Telescope, which will provide a diffraction-limited test beam, including the obscuration and mask pattern, in all the MIRI FOV and in all defocusing range. The MTS will have to stand an environment similar to the flight conditions (35K) but using a smaller set-up, typically at lab scales.
The MTS will be used to verify MIRI instrument-level tests, based on checking the implementation/realisation of the interfaces and performances, as well as the instrument properties not subject to interface control such as overall transmission of various modes of operation. The tests to be carried out during MIRI Instrument-level AIV/Calibration will be:
- Spatial Response and imaging performance (PSF Characterization) for the imager and spectrometer; mainly based on FOV and Pupil scans, cut includes also field distortion, stability, throughput, flat-field response.
- Spectral Response; wavelength calibration, repeatability, stability, cross calibration and comparison for internal calibrator characterization.
- Scattered light rejection; from internally (instrumental background) and externally generated (telescope/ISIM background).
The MTS main functionalities are as follows:
- Provide a point source and scan it along MIRI FoV.
- Provide extended source covering MIRI FoV.
- For both extended and point source modes:
# Adjustment of source temperature within a specified set points.
# Adjustment of flux levels.
# Selection of several wavelength channels.
- Polarize linearly the point source in 3 different axis.
- Capability to adjust the temperature of one element of the optical chain (background level variation).
- MIRI input pupil sampling by means of scanning a broadband source.
For performing these functions it comprises several optical devices (black body optical system, etc.) and mechanisms (filter wheels, linear stages, etc.) that operate at cryo-temperature.
The paper will include a functional description and a summary of the development status.
- Abstract document
- Manuscript document
IAC-07-A3.1.07.pdf (🔒 authorized access only).
To get the manuscript, please contact IAF Secretariat.