Results 61 to 70 of about 127,969 (344)

Pan-STARRS Photometric and Astrometric Calibration [PDF]

Astrophysical Journal Supplement Series, 2016
We present the details of the photometric and astrometric calibration of the Pan-STARRS1 3π Survey. The photometric goals were to reduce the systematic effects introduced by the camera and detectors, and to place all of the observations onto a ...
E. Magnier, E. Schlafly, D. Finkbeiner, J. Tonry, B. Goldman, S. Roser, E. Schilbach, K. Chambers, H. Flewelling, M. Huber, P. Price, W. Sweeney, C. Waters, L. Denneau, P. Draper, K. Hodapp, R. Jedicke, R. Kudritzki, N. Metcalfe, C. W. Stubbs, R. M. J. I. O. Astronomy, Lawrence Livermore National Laboratory, Hubble Fellow, Itc Harvard-Smithsonian Center for Astrophysics, Department of Astrophysical Sciences Princeton University, M. F. Astronomy, Astronomisches Rechen-Institut Zentrum fur Astronomie der Univers Heidelberg, Department of Astrophysical Sciences Princeton University, Department of Astrophysical Sciences Princeton University, H. C. F. Astrophysics   +29 more
semanticscholar   +1 more source

Fatigue‐Resistant Mechanoresponsive Color‐Changing Hydrogels for Vision‐Based Tactile Robots

Advanced Materials, EarlyView.
Mechanoresponsive color‐changing materials that can reversibly and resiliently change color in response to stress are highly desirable for diverse technologies in optics, sensors, and robots; however, such materials are rarely achieved. This work reports a fatigue‐resistant mechanoresponsive color‐changing hydrogel that exhibits reversible, resilient ...
Jiabin Liu, Wei Li, Yu She, Sean Blanchard, Shaoting Lin   +4 more
wiley   +1 more source

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

Morpho-photometric redshifts [PDF]

Monthly Notices of the Royal Astronomical Society, 2019
ABSTRACT Machine learning (ML) is one of two standard approaches (together with SED fitting) for estimating the redshifts of galaxies when only photometric information is available. ML photo-z solutions have traditionally ignored the morphological information available in galaxy images or partly included it in the form of hand-crafted ...
openaire   +2 more sources

Multifunctional Neural Probes Enable Bidirectional Electrical, Optical, and Chemical Recording and Stimulation In Vivo

Advanced Materials, EarlyView.
Convergence drawing is used to create flexible, microscale, multifunctional fiber‐based neural probes. Optimized materials selection enables individual devices to perform neural recording, electrical stimulation, optogenetics, fiber photometry, fluid delivery, and voltammetric neurotransmitter detection in rodents.
Nicolette Driscoll, Marc‐Joseph Antonini, Taylor M. Cannon, Pema Maretich, Greatness Olaitan, Valerie Doan Phi Van, Keisuke Nagao, Atharva Sahasrabudhe, Emmanuel Vargas Paniagua, Ethan J. Frey, Ye Ji Kim, Sydney Hunt, Melissa Hummel, Sanju Mupparaju, Alan Jasanoff, B. Jill Venton, Polina Anikeeva   +16 more
wiley   +1 more source

The Reduction of CCD Images for Stellar Photometry on the Vatt

Open Astronomy, 2003
We briefly describe a method of organizing all the star field exposures taken in a complete CCD observational run. By a “CommandLog” (to be published in J. Astron.
Janusz R., Boyle R. P., Philip A. G. Davis   +2 more
doaj   +1 more source

A Modular Microfluidic System to Generate Gradient Hydrogels with Simple‐to‐Complex Stiffness Profiles for Mechanobiology

Advanced Materials Technologies, EarlyView.
This work introduces a universal approach for fabricating stiffness gradient hydrogels with diverse stiffness ranges and gradient profiles. Gradient formation is achieved by precisely controlling the thermal landscape within a microfluidic system, which drives thermophoretic redistribution of precursor components in solution.
Shin Wei Chong, Jameel Sardharwalla, Gweneth Sofia P. Masonsong, Joshua Cosgrove, Anthony Katselas, Isaac J. Gresham, Marcela M. M. Bilek, Yi Shen, Chiara Neto, Daniele Vigolo   +9 more
wiley   +1 more source

Overlapping Open Clusters NGC 1750 and NGC 1758 behind the Taurus Dark Clouds. II. CCD Photometry in the Vilnius System

Open Astronomy, 2003
Seven-color photometry in the Vilnius system has been obtained for 420 stars down to V = 16 mag in the area containing the overlapping open clusters NGC 1750 and NGC 1758 in Taurus.
Straižys V., Kazlauskas A., Černiauskas A., Boyle R. P., Vrba F. J., Philip A. G. Davis, Laugalys V., Černis K., Smriglio F.   +8 more
doaj   +1 more source

Modeling Long-Term Photometric Data of Trans-Neptunian Objects and Centaurs

Frontiers in Astronomy and Space Sciences, 2022
Trans-Neptunian objects and Centaurs are small Solar System bodies that reside in the outer parts of the Solar System. These objects present photometric behaviors that are influenced due to a change in their aspect angle.
Estela Fernández-Valenzuela
doaj   +1 more source

The Sloan Digital Sky Survey Photometric Camera [PDF]

, 1998
We have constructed a large-format mosaic CCD camera for the Sloan Digital Sky Survey. The camera consists of two arrays, a photometric array that uses 30 2048 × 2048 SITe/Tektronix CCDs (24 μm pixels) with an effective imaging area of 720 cm2 and an ...
J. Gunn, M. Carr, C. Rockosi, C. Rockosi, M. Sekiguchi, M. Sekiguchi, K. Berry, Brian R. Elms, E. D. Haas, Ž. Ivezić, G. Knapp, R. Lupton, G. Pauls, R. Simcoe, R. Hirsch, D. Sanford, Shu I. Wang, D. York, F. Harris, J. Annis, L. Bartozek, W. Boroski, J. Bakken, M. Haldeman, S. Kent, S. Holm, D. Holmgren, D. Petravick, Angela Prosapio, R. Rechenmacher, M. Doi, M. Fukugita, M. Fukugita, K. Shimasaku, N. Okada, C. Hull, Walter A. Siegmund, E. Mannery, M. Blouke, D. Heidtman, D. Schneider, R. Lucinio, J. Brinkman   +42 more
semanticscholar   +1 more source