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MIRI instrument focal plane - flat field

MIRI instrument focal plane - flat field


Date: 21 January 2016
Satellite: JWST
Copyright: MIRI team, A. Glasse

The Mid-Infrared Instrument (MIRI) on the James Webb Space Telescope (JWST) will provide direct imaging and medium resolution spectroscopy (R~ 1500 to 3000) over the wavelength range 5 - 28.5 micron, coronagraphic imaging at 10.65, 11.4, 15.5 and 23 micron, and low-resolution spectroscopy (R~100) over the wavelength range 5 - 12 micron (with some response to 14 micron).

At the top of this picture is a flat field image obtained with the MIRI OSIM (Optical Telescope Element Simulator) during the ISIM CV-3 cryo-vacuum testing in December 2015/January 2016.

This particular flat field image was measured with the OSIM diffuser hot source at 900 K.

The exposure of MIRI's two types of coronagraph, a Lyot coronagraph (top left), and three four-quadrant phase mask coronagraphs (left) are clearly shown.

Also visible are the narrow slit used for low-resolution spectroscopy, and the large field used for direct imaging.

A profile across row 800 is shown.

Last Update: 1 September 2019
26-May-2022 18:42 UT

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