Results 11 to 20 of about 23,176 (215)

Multi-Site Simultaneous Time-Resolved Photometry with a Low Cost Electro-Optics System

Sensors, 2017
Sunlight reflected off of resident space objects can be used as an optical signal for astrometric orbit determination and for deducing geometric information about the object.
Forrest Gasdia, Aroh Barjatya, Sergei Bilardi   +2 more
doaj   +3 more sources

Recent Results and Perspectives for Precision Astrometry and Photometry with Adaptive Optics [PDF]

, 2010
Large ground-based telescopes equipped with adaptive optics (AO) systems have ushered in a new era of high-resolution infrared photometry and astrometry. Relative astrometric accuracies of
Clarkson, Will, Do, Tuan, Ghez, Andrea M., Lu, Jessica R., McCrady, Nate, Morris, Mark R., Yelda, Sylvana   +6 more
core   +2 more sources

Characterization of the near-Earth Asteroid 2002NY40 [PDF]

, 2007
In August 2002, the near-Earth asteroid 2002 NY40, made its closest approach to the Earth. This provided an opportunity to study a near-Earth asteroid with a variety of instruments.
Ayers, Baliunas, Benner, Binzel, Bowell, Bradley, Dennis Liang, Doyle T. Hall, Drummond, Fish, Gerwe, Hestroffer, Howell, Hudson, Jacob K. Barros, John L. Africano, John V. Lambert, Jorgensen, Keith T. Knox, Kris M. Hamada, Lewis C. Roberts, Lipschutz, Lucy, McCarthy, Müller, Nishimoto, Paul F. Sydney, Paul W. Kervin, Paxman, Pravec, Ragazzoni, Richardson, Rivkin, Roberts, Saint-Pe, Stetson, Sydney, Tsumuraya   +37 more
core   +1 more source

First time-series optical photometry from Antarctica [PDF]

Astronomy & Astrophysics, 2008
Beating the Earth's day-night cycle is mandatory for long and continuous time-series photometry and had been achieved with either large ground-based networks of observatories at different geographic longitudes or when conducted from space. A third possibility is offered by a polar location with astronomically-qualified site characteristics. Aims.
Strassmeier, K. G., Briguglio, R., Granzer, T., Tosti, G., DiVarano, I., Savanov, I., Bagaglia, M., Castellini, S., Mancini, A., Nucciarelli, G., Straniero, O., Distefano, E., Messina, S., Cutispoto, G.   +13 more
openaire   +3 more sources

DDO68 C: The Actual Appearance of a Ghost Satellite Dwarf through Adaptive Optics at the Large Binocular Telescope

The Astrophysical Journal Letters, 2023
Through adaptive optics (AO) imaging with the SOUL+LUCI instrument at the Large Binocular Telescope we were able to resolve, for the first time, individual stars in the gas-rich galaxy DDO68 C. This system was already suggested to be interacting with the
Francesca Annibali, Enrico Pinna, Leslie K. Hunt, Diego Paris, Felice Cusano, Michele Bellazzini, John M. Cannon, Raffaele Pascale, Monica Tosi, Fabio Rossi   +9 more
doaj   +1 more source

Rest-Frame R-band Lightcurve of a z~1.3 Supernova Obtained with Keck Laser Adaptive Optics [PDF]

, 2007
We present Keck diffraction limited H-band photometry of a z~1.3 Type Ia supernova (SN) candidate, first identified in a Hubble Space Telescope (HST) search for SNe in massive high redshift galaxy clusters.
Aldering, G., Barbary, K., Barczys, M., Dawson, K. S., Doi, M., Fadeyev, V., Goldhaber, G., Hattori, T., Ihara, Y., Kashikawa, N., Konishi, K., Koo, D. C., Kowalski, M., Kuznetsova, N., Larkin, J. E., Lidman, C., Max, C., Melbourne, J., Morokuma, T., Perlmutter, S., Rubin, D., Schlegel, D. J., Spadafora, A. L., Steinbring, E., Takanashi, N., Wright, S. A., Yasuda, N.   +26 more
core   +2 more sources

Stellar Photometry with the Optical Monitors [PDF]

International Astronomical Union Colloquium, 1993
AbstractThe Optical Monitors are small optical telescopes which will fly on board of the X-ray satellites SPECTRUM-X-GAMMA (JET-X experiment) and XMM. Their main scientific applications are the simultaneous observations (imaging) in the optical and UV band of the optical counterparts of X-ray sources, with limiting magnitudes of aboutmv=22(JET-X) and ...
E. Antonello, M. Cropper
openaire   +1 more source

Optical Photometry of GRB 021004: The First Month [PDF]

The Astronomical Journal, 2003
21 pages with five figures. Uses AASTEX 5.02. To appear in AJ.
Holland, S.T., Weidinger, M., Fynbo, J.P.U., Gorosabel, J., Hjorth, J., Pedersen, K., Méndez Alvarez, J., Augusteijn, T., Castro Cerón, J.M., Castro-Tirado, A., Dahle, H., Egholm, M.P., Jakobsson, P., Jensen, B.L., Levan, A., Moeller, P., Pedersen, H., Pursimo, T., Ruiz-Lapuente, P., Thomsen, B.   +19 more
openaire   +3 more sources

Fast CCD Photometry in the Taiwan-America Occultation Survey

Open Astronomy, 2003
We describe the efforts of the Taiwan-America Occultation Survey (TAOS) project to develop a data acquisition and analysis scheme for fast CCD imaging photometry.
Chen W. P., Zhang Z. W., King S. K., Alcock C., Byun Y. I., Cook K. H., Dave R., Giammarco J., Lee T., Lehner M., Liang C., Lissauer J., Marshall S., Pater I. de, Porrata R., Rice J., Wang A., Wang S. Y., Wen C. Y.   +18 more
doaj   +1 more source

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