Results 231 to 240 of about 53,340 (257)
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Phobos Disk-Integrated Photometry: 1994–1997 HST Observations
Icarus, 1999Abstract A program of synoptic monitoring of Mars was carried out with the Hubble Space Telescope from August 8, 1994, through October 9, 1997, using the Wide Field Planetary Camera 2 (WFPC2). With the improved optics of the WFPC2 and the high angular resolution of the Planetary Camera (0.0442–0.0455 arcsec/pixel) we have been able to use these ...
Michael J. Wolff +5 more
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Detection, Photometry, and Completeness of FOCAS Catalogs for the HST Medium-Deep Survey
Publications of the Astronomical Society of the Pacific, 1995We discuss the methods which we have developed and applied to optimize the detection efficiency of faint galaxies with the HST Wide Field and Planetary Cameras both prior and subsequent to the HST refurbishment mission in December 1993. Our methods are based on the FOCAS (Tyson and Jarvis 1979) automated detection software package, which we have ...
L. W. Neuschaefer +3 more
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Hot massive stars in M33: HST UV spectroscopy and photometry
AIP Conference Proceedings, 1997HST is used to study massive star populations in galaxies of the Local Group beyond the Magellanic Clouds (M31, M33, NGC6822). The purpose is to compare massive star parameters in parent galaxies with different metallicities and star formation histories. Some results for hot stars in M33 are described here.
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Comparison of Astrometry and Photometry of the Galactic Bulge Between HST-NICMOS and NACO Data
2005We present a preliminary study of photometric and astrometric measurements from adaptive optics (AO) observations of the Galactic Bulge. We compare two different observations of the same crowded stellar region in H-band, one detected with the NICMOS camera on HST and one using NACO, the AO system on the VLT at ESO.
Domenico Bonaccini +4 more
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Combined HST and HAR Imaging and Photometry of Eruptive Binaries in Globular Cluster Cores
1997We have combined the complementary qualities of HST’s high astrometric precision with TRIFFID’s extended coverage and photometric precision to perform crowded-field photometry in the innermost region of the post core-collapse globular cluster M15. Our technique virtually eliminates the problem of extreme crowding which has hitherto hampered searches ...
Michael Redfern +2 more
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Far Ultraviolet Rapid HST Photometry of U Gem in Outburst and WZ Sge in Quiescence
1997Until the advent of HST, the detailed temporal behavior of dwarf novae in the UV spectral range was poorly understood. HST, with its combination of high time and spectral resolutions, has begun to open this field. AE Aqr was recently the subject of high time resolution UV spectroscopy with the Faint Object Spectrograph.
F. H. Cheng +4 more
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Fiber photometry in striatum reflects primarily nonsomatic changes in calcium
Nature Neuroscience, 2022Alex A Legaria, Jones G Parker, Ben Yang
exaly
Quantifying Protein–Protein Interactions by Molecular Counting with Mass Photometry
Angewandte Chemie - International Edition, 2020Fabian Soltermann +2 more
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