GeMS/GSAOI performances from a user perspective

Emanuele Dalessandro; Sara Saracino; Livia Origlia; Enrico Marchetti; Francesco R. Ferraro; Barbara Lanzoni; Douglas Geisler; Francesco Mauro

doi:10.1117/12.2230978

27 July 2016 GeMS/GSAOI performances from a user perspective

Emanuele Dalessandro, Sara Saracino, Livia Origlia, Enrico Marchetti, Francesco R. Ferraro, Barbara Lanzoni, Douglas Geisler, Francesco Mauro

Author Affiliations +

Proceedings Volume 9909, Adaptive Optics Systems V; 99095V (2016) https://doi.org/10.1117/12.2230978
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

Abstract

Ground-based near-IR imagers assisted by Multi Conjugate Adaptive Optics (MCAO) systems are the technological frontier to obtain high-quality stellar photometry in crowded fields at the highest possible spatial resolution. The Gemini MCAO System (GeMS) feeding the Gemini South Adaptive Optics Imager (GSAOI) is the only facility of this kind currently available to the Community. We used a set of images obtained in the J and K_s bands of the central regions of two Galactic bulge globular clusters (Liller 1 and NGC 6624) with GeMS/GSAOI, under significantly different atmospheric conditions. We characterized the performances of the system in terms of efficiency and uniformity of the Point Spread Function (PSF) over the field of view with varying seeing, airmass and tip-tilt star asterisms. We also compared the PSF performances of GeMS/GSAOI with the HST/ACS ones in the F606W and F814W bands.

Citation Download Citation

Emanuele Dalessandro, Sara Saracino, Livia Origlia, Enrico Marchetti, Francesco R. Ferraro, Barbara Lanzoni, Douglas Geisler, and Francesco Mauro "GeMS/GSAOI performances from a user perspective", Proc. SPIE 9909, Adaptive Optics Systems V, 99095V (27 July 2016); https://doi.org/10.1117/12.2230978

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