The Gemini NICI Planet-Finding Campaign: Discovery of a substellar L dwarf companion to the nearby young M dwarf CD-35 2722
Astrophysical Journal Letters 729:2 (2011)
An image slicer-based integral-field spectrograph for EPICS
Proceedings of SPIE - The International Society for Optical Engineering 7735:PART 1 (2010)
Abstract:
We present the results of a design study for an integral field spectrograph as the "back-end" instrument for spectroscopy of exoplanets carried out in the context of the EPICS Phase A study. EPICS is the planet finder imager and spectrograph for the E-ELT. In our study we investigated the feasibility of an image slicer based integral field spectrograph and developed an optical design for the image slicer and the necessary pre-optics, as well as the spectrograph optics. We present a detailed analysis of the optical performance of the design. © 2010 Copyright SPIE - The International Society for Optical Engineering.Coronagraphic capability for HARMONI at the E-ELT
Proceedings of SPIE - The International Society for Optical Engineering 7735:PART 1 (2010)
Abstract:
HARMONI is a proposed visible and near-infrared integral field spectrograph for the European Extremely Large Telescope. We are exploring the merits of adding a coronagraphic capability to HARMONI, specifically targeted at enabling observations of faint, nearby companions (primarily extra-solar planets) that require high contrast. Although HARMONI is not fed by extreme adaptive optics, we show that substantial contrasts can be achieved by post-processing of the hyperspectral data cube using spectral deconvolution. We make predictions of achievable contrast as a function of coronagraph design, based on realistic models of the telescope's aberrations. © 2010 Copyright SPIE - The International Society for Optical Engineering.Expected performance and simulated observations of the instrument HARMONI at the European Extremely Large Telescope (E-ELT)
Proceedings of SPIE - The International Society for Optical Engineering 7735:PART 1 (2010)
Abstract:
HARMONI has been conceived as a workhorse visible and near-infrared (0.47-2.45 microns) integral field spectrograph for the European Extremely Large Telescope (E-ELT). It provides both seeing and diffraction limited observations at several spectral resolutions (R= 4000, 10000, 20000). HARMONI can operate with almost any flavor of AO (e.g. GLAO, LTAO, SCAO), and it is equipped with four spaxel scales (4, 10, 20 and 40 mas) thanks to which it can be optimally configured for a wide variety of science programs, from ultra-sensitive observations of point sources to highangular resolution spatially resolved studies of extended objects. In this paper we describe the expected performance of the instrument as well as its scientific potential. We show some simulated observations for a selected science program, and compare HARMONI with other ground and space based facilities, like VLT, ALMA, and JWST, commenting on their synergies and complementarities. © 2010 Copyright SPIE - The International Society for Optical Engineering.HARMONI: A single-field wide-band integral-field spectrograph for the European ELT
Proceedings of SPIE - The International Society for Optical Engineering 7735:PART 1 (2010)