Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...20518001w&link_type=abstract
American Astronomical Society Meeting 205, #180.01; Bulletin of the American Astronomical Society, Vol. 37, p.384
Astronomy and Astrophysics
Astronomy
Scientific paper
A laboratory demonstration integral field spectrograph using a commercial catalog microlens array and a prism to interleave spectra between image points has been built, as a step towards a coronagraphic spectrograph for the Terrestrial Planet Finder - Coronagraph. Test results of the 40 x 40 element microlens array show that a pinhole array mask will be needed at the foci of the lenslets to minimise cross-talk between the spectra. A custom microlens array will be needed to improve the throughput, and to provide the 200 x 200 element format to cover the coronagraphic dark hole over the 0.5 - 1.0 micron wavelength range while Nyquist sampling the telescope diffraction limit. This work was funded by NASA via the TPF-C Project at JPL.
Hilton George M.
Lindler Don J.
Woodgate Bruce E.
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