Zobrazeno 1 - 10
of 68
pro vyhledávání: '"Rene Racine"'
Autor:
Siegfried F. Stiemer, Rene Racine, Mathieu Angers, Rick Murowinski, Steven E. Bauman, Andy Liu, Derrick Salmon, Alan W. McConnachie, Nathan Loewen, Greg Green, Nicolas Flagey, Mike Gedig, Kei Szeto, David Lo, David Crampton, Tom Benedict, Di Wu
Publikováno v:
SPIE Proceedings.
The Canada-France-Hawaii-Telescope Corporation (CFHT) plans to repurpose its observatory on the summit of Maunakea and operate a (60 segment) 11.25m aperture wide field spectroscopic survey telescope, the Maunakea Spectroscopic Explorer (MSE). The pr
Autor:
Claire Moutou, Todd Burdullis, Jean-Charles Cuillandre, Billy Mahoney, Daniel Devost, Nadine Manset, Rene Racine
Publikováno v:
Observatory Operations: Strategies, Processes, and Systems VI.
In an effort to optimize the night time utilizing the exquisite weather on Maunakea, CFHT has equipped its dome with vents and is now moving its Queued Scheduled Observing (QSO)1 based operations toward Signal to Noise Ratio (SNR) observing. In this
Publikováno v:
Journal for the History of Astronomy. 42:125-139
Autor:
Derrick Salmon, Grant Matsushige, Kevin Ho, Gregory Barrick, Rene Racine, Jean-Charles Cuillandre, James D. Thomas, Tom Benedict
Publikováno v:
Publications of the Astronomical Society of the Pacific. 121:905-921
We analyze stellar images on 36,520 exposures made in the u, g, r, i, and z bands with MegaCam at the focus of the 3.6 m Canada-France-Hawai'i Telescope between 2005 August and 2008 August. The effect on image quality (IQ) of temperature differences
Autor:
Rene Racine, F. Wesemael
Publikováno v:
Journal for the History of Astronomy. 39:161-179
Autor:
F. Wesemael, Rene Racine
Publikováno v:
Publications of the Astronomical Society of the Pacific. 120:465-473
We examine the historical evolution of the image quality delivered by astronomical telescopes since the days of William Herschel. This is done by analyzing double-star discovery data from nine celebrated observers who used 12 telescopes at 11 sites.
Autor:
Rene Racine, Paul Hickson
Publikováno v:
Publications of the Astronomical Society of the Pacific. 119:456-465
The quality of astronomical images obtained with the 3 m liquid‐mirror telescope (LMT) of the NASA Orbital Debris Observatory (NODO) and with the University of British Columbia 6 m Large Zenith Telescope (LZT) is assessed and compared to that of co
Autor:
Rene Racine
Publikováno v:
Publications of the Astronomical Society of the Pacific. 118:1066-1075
Strehl ratios achieved on bright guide stars by 19 adaptive optics (AO) systems of various dimensions are examined. Both types of systems exhibit a similarly stronger attenuation of instrumental aberrations with smaller subapertures. With the same nu
Autor:
Rene Racine
Publikováno v:
Publications of the Astronomical Society of the Pacific. 117:401-410
Seeing data from 41 campaigns at 23 sites ranging in altitude from 1130 to 5150 m and elevations between 1 and 30 m above grade are used to calibrate and test a simple seeing model that only involves altitude and elevation. The model is consistent wi
Autor:
Rene Racine
Publikováno v:
Publications of the Astronomical Society of the Pacific. 116:77-83
This paper analyzes a compilation of aperture diameters D and commissioning dates t for 177 optical telescopes, including those that have been among the largest of their time. We offer the following findings, and draw the following inferences, about