Astronomy and Astrophysics – Astrophysics
Scientific paper
2002-10-03
Astronomy and Astrophysics
Astrophysics
This paper will be published in SPIE Proceedings Vol. 4850 and is made available as an electronic preprint with permission of
Scientific paper
A well-adapted spectrograph concept has been developed for the SNAP (SuperNova/Acceleration Probe) experiment. The goal is to ensure proper identification of Type Ia supernovae and to standardize the magnitude of each candidate by determining explosion parameters. An instrument based on an integral field method with the powerful concept of imager slicing has been designed and is presented in this paper. The spectrograph concept is optimized to have very high efficiency and low spectral resolution (R~100), constant through the wavelength range (0.35-1.7 microns), adapted to the scientific goals of the mission.
Ealet Anne
Prieto Eric
SNAP collaboration for the
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