IFMOS: Integral field multi object spectrograph for the NGST

Conference item

Conducting resolved spectroscopy on large samples of very faint objects is a strong requirement for the Next Generation Space Telescope (NGST). We are presenting the IFMOS concept, a 1 to 5 microns integral field spectrograph developed under contract with ESA. Image slicers are feeding compact spectrograph modules with very few moving parts. The wide field survey mode has low spatial - low spectral resolution over a field similar to 46 x 40 arcsec(2) (0.19 arcsec per resolved element). The high spatial -high spectral resolution mode covers a field 3.8 x 2.6 arcsec(2) sampled at 0.05 arcsec, a pointed object mode at the diffraction limit of the telescope. A detailed opto-mechanical design has been produced, meeting the environmental requirements for the NGST payload.

Authors: Le Fevre, O; Prieto, E; Allington-Smith, J; Bacon, R; Content, R

• Publication status: Published
• Journal: IMAGING THE UNIVERSE IN THREE DIMENSIONS: ASTROPHYSICS WITH ADVANCED MULTI-WAVELENGTH IMAGING DEVICES
• Volume: 195
• Pages: 431-436
• Publication date: 2000-01-01
• Event title: International Conference on Imaging the Universe in 3 Dimensions
• ISBN: 1583810226