Publications (19)
SDSS J133401.39+331534.3: A New Subarcsecond Gravitationally Lensed Quasar
Cristian E. Rusu, Masamune Oguri, Naohisa Inada +12
The quasar SDSS J133401.39+331534.3 at z = 2.426 is found to be a two-image gravitationally lensed quasar with the image separation of 0.833. The object is first identified as a le…
AO3k at Subaru: First on-sky results of the facility extreme-AO
Julien Lozi, Kyohoon Ahn, Hannah Blue +12
The facility adaptive optics of the Subaru Telescope AO188 recently received some long-awaited upgrades: a new 3224-actuator deformable mirror (DM) from ALPAO (hence the name chang…
Adaptive Optics Observations of 3 micron Water Ice in Silhouette Disks in the Orion Nebula Cluster and M43
Hiroshi Terada, Alan T. Tokunaga, Tae-Soo Pyo +9
We present the near-infrared images and spectra of four silhouette disks in the Orion Nebula Cluster (ONC; M42) and M43 using the Subaru Adaptive Optics system. While d053-717 and…
Atmospheric turbulence profiling with multi-aperture scintillation of a Shack-Hartmann sensor
Hajime Ogane, Masayuki Akiyama, Shin Oya +1
Adaptive optics (AO) systems using tomographic estimation of three-dimensional structure of atmospheric turbulence requires vertical atmospheric turbulence profile, which describes…
Using the Multi-Object Adaptive Optics demonstrator RAVEN to observe metal-poor stars in and towards the Galactic Centre
Masen Lamb, Kim Venn, David Andersen +16
The chemical abundances for five metal-poor stars in and towards the Galactic bulge have been determined from H-band infrared spectroscopy taken with the RAVEN multi-object adaptiv…
Statistics of Turbulence Parameters at Maunakea using multiple wave-front sensor data of RAVEN
Yoshito H. Ono, Carlos M. Correia, Dave R. Andersen +5
Prior statistical knowledge of the atmospheric turbulence is essential for designing, optimizing and evaluating tomographic adaptive optics systems. We present the statistics of th…