GPI: cryogenic spectrograph optics performances

Details GPI: cryogenic spectrograph optics performances GPI: cryogenic spectrograph optics performances

Jul 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010spie.7735e..55t&link_type=abstract

Ground-based and Airborne Instrumentation for Astronomy III. Edited by McLean, Ian S.; Ramsay, Suzanne K.; Takami, Hideki. Pro

Astronomy and Astrophysics

Astronomy

Scientific paper

The science instrument for GPI (Gemini Planet Imager) is a cryogenic integral field spectrograph based on a lenslet array. The integral field nature of the instrument allows for a full mapping of the focal plane at coarse spectral resolution. With such a data cube, artifacts within the PSF such as residual speckles can be suppressed. Additionally, the initial detection of any candidate planet will include spectral information that can be used to distinguish it from a background object: candidates can be followed up with detailed spectroscopic observations. The optics between the lenslet array and the detector are essentially a standard spectrograph with a collimating set of lenses, a dispersive prism and a camera set of lenses in a folded assembly. We generally refer to this optical set as the spectrograph optics. This paper describes the laboratory optical performances over the field of view. The test procedure includes the imaging performances in both non dispersive and dispersive mode. The test support equipments include a test cryostat, an illumination module with monochromatic fiber laser, a wideband light source and a test detector module.

Affiliated with

Also associated with

No associations

Rating

GPI: cryogenic spectrograph optics performances does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with GPI: cryogenic spectrograph optics performances, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and GPI: cryogenic spectrograph optics performances will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1380058