Share Email Print
cover

Proceedings Paper

Air, telescope, and instrument temperature effects on the Gemini Planet Imager’s image quality
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The Gemini Planet Imager (GPI) is a near-infrared instrument that uses Adaptive Optics (AO), a coronagraph and advanced data processing techniques to achieve very high contrast images of exoplanets. The GPI Exoplanet Survey (GPIES) is a 600 stars campaign aiming at detecting and characterizing young, massive and self-luminous exoplanets at large orbital distances (>5 au). Science observations are taken simultaneously with environmental data revealing information about the turbulence in the telescope environment as well as limitations of GPI’s AO system. Previous work has shown that the timescale of the turbulence, τ0, is a strong predictor of AO performance, however an analysis of the dome turbulence on AO performance has not been done before. Here, we study correlations between image contrast and residual wavefront error (WFE) with temperature measurements from multiple locations inside and outside the dome. Our analysis revealed GPI’s performance is most correlated with the temperature difference between the primary mirror of the telescope and the outside air. We also assess the impact of the current temperature control and ventilation strategy at Gemini South (GS).

Paper Details

Date Published: 13 July 2018
PDF: 6 pages
Proc. SPIE 10703, Adaptive Optics Systems VI, 1070356 (13 July 2018); doi: 10.1117/12.2319615
Show Author Affiliations
Melisa Tallis, Kavli Institute for Particle Astrophysics and Cosmology, Stanford Univ. (United States)
Vanessa P. Bailey, Jet Propulsion Lab. (United States)
Bruce Macintosh, Kavli Institute for Particle Astrophysics and Cosmology, Stanford Univ. (United States)
Jeffrey K. Chilcote, Kavli Institute for Particle Astrophysics and Cosmology, Stanford Univ. (United States)
Lisa A. Poyneer, Lawrence Livermore National Lab. (United States)
Jean-Baptist Ruffio, Kavli Institute for Particle Astrophysics and Cosmology, Stanford Univ. (United States)
Thomas L. Hayward, Gemini Observatory (United States)
Dmitry Savransky, Cornell Univ. (United States)


Published in SPIE Proceedings Vol. 10703:
Adaptive Optics Systems VI
Laird M. Close; Laura Schreiber; Dirk Schmidt, Editor(s)

© SPIE. Terms of Use
Back to Top