Gemini Planet Imager Observational Calibrations III: Empirical Measurement Methods and Applications of High-Resolution Microlens PSFs

Autor:	Ingraham, Patrick, Ruffio, Jean-Baptiste, Perrin, Marshall D., Wolff, Schuyler G., Draper, Zachary H., Maire, Jerome, Marchis, Franck, Fesquet, Vincent
Rok vydání:	2014
Předmět:	Astrophysics - Instrumentation and Methods for Astrophysics Astrophysics - Earth and Planetary Astrophysics
Druh dokumentu:	Working Paper
DOI:	10.1117/12.2055283
Popis:	The newly commissioned Gemini Planet Imager (GPI) combines extreme adaptive optics, an advanced coronagraph, precision wavefront control and a lenslet-based integral field spectrograph (IFS) to measure the spectra of young extrasolar giant planets between 0.9-2.5 um. Each GPI detector image, when in spectral model, consists of ~37,000 microspectra which are under or critically sampled in the spatial direction. This paper demonstrates how to obtain high-resolution microlens PSFs and discusses their use in enhancing the wavelength calibration, flexure compensation and spectral extraction. This method is generally applicable to any lenslet-based integral field spectrograph including proposed future instrument concepts for space missions. Comment: 10 pages, 6 figures. Proceedings of the SPIE, 9147-282 v2: reference added
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1407.2303 Zobrazit plný text záznamu View this record from Arxiv