Focussing Image Slicers: Refractive and Reflective

Details Focussing Image Slicers: Refractive and Reflective Focussing Image Slicers: Refractive and Reflective

1999-11-10

arxiv.org/abs/astro-ph/9911170v1

Astronomy and Astrophysics

Astrophysics

4 pages, 1 figure, to be published in "Imaging the Universe in Three Dimensions", ASP Conf. Series, in press, van Breugel & Bl

Scientific paper

A number of design options for image slicers for NGST and Gemini are being investigated. These image slicers are all of the focussing type and both refractive and reflective solutions are being explored. One such device, an image slicer that focuses 10 slices on a spectrograph slit is now in operation at the McMath Solar telescope. It consists of three lenslet arrays, and additionally acts as a focal reducer and provides correction for astigmatism of the telescope. A combined refractive and reflective slicer designed for use on NGST delivers near-diffraction limited images for up to 40 slices.

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