Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Mathew J. Rippa"'
Autor:
Kevin Hanna, Jennifer Miller, Tim Hardy, Jennifer Dunn, John White, Luc Boucher, Prabhani Rajakaruna, Kathleen Labrie, Scot Kleinman, Kristin Chiboucas, Manuel Lazo, Javier Luhrs, Eduardo Tapia, Andrew W. Stephens, German Gimeno, Mathew J. Rippa, Michael Pohlen, Julia Scharwächter, Michael Lundquist
Publikováno v:
Ground-based and Airborne Instrumentation for Astronomy VII.
The installation of fully-depleted Hamamatsu CCDs in GMOS-N in February/March 2017 marked the conclusion of the CCD upgrade project for the two Gemini Multi-Object Spectrographs. The corresponding upgrade for GMOS-S was completed in June/July 2014, s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b79b1fdc5235a00842ccc13910522417
https://doi.org/10.1117/12.2313058
https://doi.org/10.1117/12.2313058
Autor:
Thomas L. Hayward, Chadwick A. Trujillo, Steve Hardash, Neal Masuda, Mathew J. Rippa, Tom Cumming, Henri Bonnet, Cy Bagano, Chris Yamasaki, Chas Cavedoni
Publikováno v:
SPIE Proceedings.
Fighting vibrations on large telescopes is an arduous task. At Gemini, vibrations originating from cryogenic coolers have been shown to degrade the optical wavefront, in certain cases by as much as 40%. This paper discusses a general solution to vibr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::175231b2570122f4ab1c0e1ce0bc43f2
https://doi.org/10.1117/12.2231782
https://doi.org/10.1117/12.2231782
Autor:
Gaston Gausachs, Mathew J. Rippa, Myung Cho, Chas Cavedoni, Thomas L. Hayward, H. Bonnet, Ramon Galvez
Publikováno v:
SPIE Proceedings.
We report the results of a multi-year program to measure the vibration characteristics of the two Gemini telescopes. Measurements with fast-guiding wavefront sensors and networks of accelerometers show a correlation between image motion and optical v
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::682a4ae179cb490721a7550e9c5efa57
https://doi.org/10.1117/12.2232140
https://doi.org/10.1117/12.2232140
Autor:
Rolando Rogers, Michiel van der Hoeven, Vanessa Montes, Cristian Moreno, Gabriel Perez, Mathew J. Rippa
Publikováno v:
Observatory Operations: Strategies, Processes, and Systems VI.
Both Gemini telescopes, in Hawaii and Chile, are located in highly seismic active areas. That means that the seismic protection is included in the structural design of the telescope, instruments and auxiliary structure. We will describe the specific
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::65923430d5852d6c2c67383bbfdb3507
https://doi.org/10.1117/12.2232161
https://doi.org/10.1117/12.2232161
Autor:
Roberto Rojas, Philip Taylor, Tom Cumming, Cristian Urrutia, Pedro Gigoux, William Rambold, Mathew J. Rippa, Angelic Ebbers
Publikováno v:
SPIE Proceedings.
The real-time control systems for the Gemini Telescopes were designed and built in the 1990s using state-of-the-art software tools and operating systems of that time. Since these systems are in use every night they have not been kept upto- date and a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::99cbcf084472bf1d759ca8058c67acd8
https://doi.org/10.1117/12.2057464
https://doi.org/10.1117/12.2057464
Autor:
Mark Simpson, Ricardo P. Schiavon, Kathleen Labrie, S. J. Kleinman, Kevin Hanna, German Gimeno, Mathew J. Rippa, Richard Murowinski, John White, Chris Yamasaki, Kristin Chiboucas, Brian Walls, Katherine C. Roth
The GMOS-N instrument was upgraded with new CCDs in October 2011, improving the instrument sensitivity at both red and blue wavelengths. The deep depletion devices are manufactured by e2v (42-90 with multi-layer 3 coating) and extend the useful wavel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9059316fa5fafb10cc90a8b74c7ef18e
https://nrc-publications.canada.ca/eng/view/object/?id=3f0a3c1c-6717-41d0-9b21-6c596e42f43c
https://nrc-publications.canada.ca/eng/view/object/?id=3f0a3c1c-6717-41d0-9b21-6c596e42f43c
Autor:
Robert Wyman, Mike Sheehan, Jose Soto, Christopher J. Carter, Gabriel Perez, Eric W. James, Mathew J. Rippa, Cooper Nakayama, Chris Yamasaki
Publikováno v:
SPIE Proceedings.
The Gemini Observatory is continuing in the preliminary design stages of upgrading the micro-controller and related data acquisition components for the Secondary Mirror Tip/tilt System (M2TS). The Gemini North M2TS has surpassed a decade of service i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bfb539955139b782f38048526a94d325
https://doi.org/10.1117/12.857916
https://doi.org/10.1117/12.857916
Autor:
Mathew J. Rippa, Christopher J. Carter
Publikováno v:
Advanced Software and Control for Astronomy II.
The Gemini Secondary Mirror Tip/tilt Systems (M2TS) have greatly benefited from the availability of software-based data logging-to-disk of internal variables at servo loop rates, enabling efficient testing and troubleshooting. Similar 'fast-logging-t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a9265ca9178409ea3671366715bef163
https://doi.org/10.1117/12.790081
https://doi.org/10.1117/12.790081
Publikováno v:
Advanced Software and Control for Astronomy II.
The Gemini Observatory is currently in the early stages of a major upgrade of the Secondary Mirror Tip/tilt Systems (M2TS). Although these systems continue to deliver good fast-steering and chopping performance at both sites, there are persistent and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9c80bae9e8d23546ce3df8117745beff
https://doi.org/10.1117/12.789960
https://doi.org/10.1117/12.789960