Results 31 to 40 of about 23,176 (215)

MAD@VLT: Deep into the Madding Crowd of Omega Centauri

, 2008
We present deep and accurate Near-Infrared (NIR) photometry of the Galactic Globular Cluster (GC) Omega Cen. Data were collected using the Multi-Conjugate Adaptive Optics Demonstrator (MAD) on VLT (ESO).
A. M., Amico P., Bono G., Buonanno R., Calamida A., Caputo F., Corsi C. E., D'Odorico S., D., Dall'Ora M., DEGL'INNOCENTI S, Ferraro I., Freyhamme, Iannicola G., Koeste, L. M., Marchetti E., Monelli M., Nonino M., P. G., Piersimon, Prada Moron, Pulone L., Romaniello M., Stetson P. B.   +24 more
core   +1 more source

The construction of colorimetry by committee [PDF]

, 1996
This paper explores the confrontation of physical and contextual factors involved in the emergence of the subject of color measurement, which stabilized in essentially its present form during the interwar period. The contentions surrounding the specialty
Johnston, S.F.
core   +3 more sources

Array Polarimetry and Optical-Differencing Photometry [PDF]

Symposium - International Astronomical Union, 1995
Array detectors have improved the efficiency of optical polarimetry sufficiently for this technique to become part of the standard arsenal of observational facilities. However, we could gain even more: spatially-differentiating photometry can be implemented as an option of array Polarimeters and low-noise, high-frame-rate array detectors will allow ...
openaire   +1 more source

MODERNIZATION OF AZT-22 TELESCOPE OF MAIDANAK HIGH-ALTITUDE OBSERVATORY: TESTING RESULTS

Radio Physics and Radio Astronomy, 2014
The AZT-22 telescope, equipped with the ML09000-65 CCD camera, has shown to be capable of obtaining high-quality images of astronomical objects and thus solving a wide range of observational tasks.
A. V. Sergeev, O. A. Burkhonov, V. N. Dudinov, A. P. Zheleznyak, Y. N. Krugly, I. E. Molotov, V. M. Shulga, S. A. Ehgamberdiev, V. V. Konichek, A. E. Kochetov   +9 more
doaj   +1 more source

Towards Precision Photometry with Extremely Large Telescopes: the Double Subgiant Branch of NGC 1851 [PDF]

, 2015
The Extremely Large Telescopes currently under construction have a collecting area that is an order of magnitude larger than the present largest optical telescopes.
Andersen, D. R., Bono, G., Fiorentino, G., McConnachie, A. W., Stetson, P. B., Turri, P., Véran, J. -P.   +6 more
core   +2 more sources

Quantifying the Contamination from nearby Stellar Companions in Gaia DR3 Photometry

The Astronomical Journal
Identifying and removing binary stars from stellar samples is a crucial but complicated task. Regardless of how carefully a sample is selected, some binaries will remain and complicate interpretation of results, especially via flux contamination of ...
Kendall Sullivan, Adam L. Kraus, Travis A. Berger, Daniel Huber   +3 more
doaj   +1 more source

Evaluation of Uniformity and Glare Improvement with Low Energy Efficiency Losses in Street Lighting LED Luminaires Using Laser-Sintered Polyamide-Based Diffuse Covers

Energies, 2018
Energy saving in street lighting is garnering more interest and has become a priority in municipal management. Therefore, LED luminaires are gradually becoming prevalent in our cities.
Alfonso Gago-Calderón, Manuel Jesús Hermoso-Orzáez, Jose Ramon De Andres-Diaz, Guillermo Redrado-Salvatierra   +3 more
doaj   +1 more source

Correction of distortion for optimal image stacking in Wide Field Adaptive Optics: Application to GeMS data

, 2016
The advent of Wide Field Adaptive Optics (WFAO) systems marks the beginning of a new era in high spatial resolution imaging. The newly commissioned Gemini South Multi-Conjugate Adaptive Optics System (GeMS) combined with the infrared camera Gemini South ...
Andersen, M., Bernard, A., Bounissou, S., Fusco, T., Mugnier, L. M., Neichel, B., Plana, H., Samal, M., Zavagno, A.   +8 more
core   +3 more sources

bRing: An observatory dedicated to monitoring the $\beta$ Pictoris b Hill sphere transit [PDF]

, 2017
Aims. We describe the design and first light observations from the $\beta$ Pictoris b Ring ("bRing") project. The primary goal is to detect photometric variability from the young star $\beta$ Pictoris due to circumplanetary material surrounding the ...
Bailey III, J. I., Crawford, S. M., Dorval, P., Ireland, M. J., Kenworthy, M. A., Laginja, I., Lomberg, B. B. D., Mamajek, E. E., Mellon, S. N., Stuik, R., Talens, G. J. J.   +10 more
core   +3 more sources

Demonstrating high-precision photometry with a CubeSat: ASTERIA observations of 55 Cancri e [PDF]

, 2020
ASTERIA (Arcsecond Space Telescope Enabling Research In Astrophysics) is a 6U CubeSat space telescope (10 cm x 20 cm x 30 cm, 10 kg). ASTERIA's primary mission objective was demonstrating two key technologies for reducing systematic noise in photometric ...
Babuscia, Alessandra, Bailey, Vanessa P., Bocchino, Jr., Robert L., Campuzano, Brian, Colley, Cody, Demory, Brice-Olivier, Di Pasquale, Peter, Donner, Amanda, Fesq, Lorraine, Gedenk, Tobias, Hughes, Kyle, Knapp, Mary, Krajewski, Joel, Krishnamurthy, Akshata, Kulkarni, Tejas, Loveland, Jessica, Luu, Jason, Pong, Christopher M., Seager, Sara, Smith, Colin, Smith, Matthew W., White, Mary   +21 more
core   +2 more sources