Results 11 to 20 of about 695,204 (139)

The InfraRed Imaging Spectrograph (IRIS) for TMT: photometric precision and ghost analysis [PDF]

, 2018
The InfraRed Imaging Spectrograph (IRIS) is a first-light instrument for the Thirty Meter Telescope (TMT) that will be used to sample the corrected adaptive optics field by NFIRAOS with a near-infrared (0.8 - 2.4 $\mu$m) imaging camera and Integral Field
Chapin, Edward L., Chisholm, Eric, Do, Tuan, Dunn, Jennifer, Hayano, Yutaka, Johnson, Chris, Larkin, James E., Riddle, Reed L., Rundquist, Nils, Schoeck, Matthias, Sohn, Ji Man, Suzuki, Ryuji, Walth, Gregory, Wright, Shelley A.   +13 more
core   +3 more sources

Applications of inertial-sensor high-inheritance instruments to DSN precision antenna pointing [PDF]

, 1992
Laboratory test results of the initialization and tracking performance of an existing inertial-sensor-based instrument are given. The instrument, although not primarily designed for precision antenna pointing applications, demonstrated an on-average 10 ...
Goddard, R. E.
core   +1 more source

SOPHIE+: First results of an octagonal-section fiber for high-precision radial velocity measurements

, 2012
High-precision spectrographs play a key role in exoplanet searches and Doppler asteroseismology using the radial velocity technique. The 1 m/s level of precision requires very high stability and uniformity of the illumination of the spectrograph.
A. Santerne, Artigau, Avila, Avila, Bakos, Baranne, Barge, Bazot, Boisse, Boisse, Boisse, Bouchy, Bouchy, Bouchy, Bouchy, Brown, Brown, Butler, Butler, Chazelas, Cochran, Collier Cameron, Connes, Demory, Diaz, F. Bouchy, Fried, G. Hébrard, Gillon, Heacox, Heacox, Howard, Howard, Howard, Hunter, Hébrard, Hébrard, I. Boisse, L. Arnold, Loeillet, Maness, Martic, Mayor, Melo, Mosser, Moutou, Pepe, Pepe, Perruchot, Perruchot, R. F. Díaz, S. Perruchot, Santerne, Setiawan, Vogt, Walker, Wright, X. Delfosse   +57 more
core   +3 more sources

Observations of Binary Stars with the Differential Speckle Survey Instrument. II. Hipparcos Stars Observed in 2010 January and June [PDF]

, 2011
The results of 497 speckle observations of Hipparcos stars and selected other targets are presented. Of these, 367 were resolved into components and 130 were unresolved.
Anderson, Lisa M., Ciardi, David R., Gomez, Shamilia C., Horch, Elliott P., Howell, Steve B., Sherry, William H., van Altena, William F.   +6 more
core   +2 more sources

CHIRON - A Fiber Fed Spectrometer for Precise Radial Velocities

, 2013
The CHIRON optical high-resolution echelle spectrometer was commissioned at the 1.5m telescope at CTIO in 2011. The instrument was designed for high throughput and stability, with the goal of monitoring radial velocities of bright stars with high ...
Bonati, Marco, Fischer, Debra A., Giguere, Matthew J., Moore, Peter, Schwab, Christian, Spronck, Julien F. P., Szymkowiak, Andrew, Tokovinin, Andrei   +7 more
core   +1 more source

The Keck Cosmic Web Imager [PDF]

, 2010
We are designing the Keck Cosmic Web Imager (KCWI) as a new facility instrument for the Keck II telescope at the W. M. Keck Observatory (WMKO). KCWI is based on the Cosmic Web Imager (CWI), an instrument that has recently had first light at the Hale ...
Adkins, Sean, Epps, Harland, Martin, Chris, Matuszewski, Mateusz, Moore, Anna, Morrissey, Patrick, Rahman, Shahinur   +6 more
core   +1 more source

Development and application of a sensitive, high precision weighing lysimeter for use in greenhouses [PDF]

, 1985
A high precision weighing lysimeter for measuring evapotranspiration in greenhouses was developed. The instrument has a measurement of sensitivity of one part in 106, that is one order of magnitude better than any other so far described in the literature.
Bot, G.P.A., Meijer, J., Stanghellini, C., Udink ten Cate, A.J.   +3 more
core   +3 more sources

Precision stellar radial velocity measurements with FIDEOS at the ESO 1-m telescope of La Silla

, 2018
We present results from the commissioning and early science programs of FIDEOS, the new high-resolution echelle spectrograph developed at the Centre of Astro Engineering of Pontificia Universidad Catolica de Chile, and recently installed at the ESO 1m ...
Brahm, R., Espinoza, N., Flores, M., Jones, M., Jordan, A., Pinto, M. Tala, Ramirez, S., Ropert, S., Rukdee, S., Shen, T., Suc, V., Vanzi, L., Zapata, A.   +12 more
core   +1 more source

The origin of the spectral intensities of cosmic-ray positrons

, 2013
AMS instrument aboard the International Space Station is a high precision instrument capable of collecting large statistics on cosmic ray intensities and as such has started making highly significant contributions to Astroparticle Physics.
Burch, B., Cowsik, R., Madziwa-Nussinov, T.   +2 more
core   +1 more source

Variable-delay Polarization Modulators for Cryogenic Millimeter-wave Applications [PDF]

, 2014
We describe the design, construction, and initial validation of the variable-delay polarization modulator (VPM) designed for the PIPER cosmic microwave background polarimeter.
Chuss, David T., Eimer, Joseph R., Fixsen, Dale J., Hinderks, James, Kogut, Alan J., Lazear, Justin, Mirel, Paul, Switzer, Eric, Voellmer, George M., Wollack, Edward J.   +9 more
core   +3 more sources