Electron-Bombarded, Back-Illuminated CCD Sensors . ... EBCCD PERFORMANCE: Resolution and CTF . ... Measured CTF for an SI502AB back-illuminated CCD, a GaAs SI502AB EBCCD, . ... Figure 8 depicts each sensor's measured CTF. ... The EBCCD's CTF is only slightly lower in contrast than the back-illuminated CCD's CTF and, depending upon the spatial frequency of interest, is 20% to 100% higher in contrast than the ICCD's CTF. ... Measured CTF for GaAs SI502AB EBCCD #A (1.8 keV) and SI502AB ICCD using a . ...

Solar High Resolution Studies . ... Solar Group . ... High Resolution Studies . Small Scale Activity . ... High resolution observations at different heights in the solar atmosphere have emphasized that there is no such thing as a "quiet" Sun (e.g. Schrijver et al., ... This, and the temporal coincidence of other signatures, supports the idea that microflares are indeed just miniature flares, but that one needs a very high resolution in order to observe them (Cauzzi et al., 2003, in preparation) . ...

... Results of a program to measure, using the Goddard High Resolution Spectrograph (GHRS) on the Hubble Space Telescope (HST), macroturbulent and flow velocities, the acceleration of winds, and the amount of hot (transition-region) plasma in the outer atmospheres of Carbon and K-M Giant/Supergiant stars are presented. ... UV spectra of K-M giant and supergiant stars and of carbon stars have been acquired with the Goddard High Resolution Spectrograph (GHRS) on the Hubble Space Telescope (HST). ...

... Дни открытых дверей к юбилею САО РАН (12-14 апреля 2016 г.) . Международная конференция "Dark Ages and White Nights (Spectroscopy of the CMB)" (20-24 июня 2016 г.) . ... Международная конференция MULTI-SPIN GALAXIES - 2016 (26-30 сентября 2016 г.) . Международная астрономическая конференция "Физика звезд: от коллапса до коллапса" (3-7 октября 2016 г.) Архив . ... Подробнее.. ... 10.02.16 . ... БТА в реальном времени . ... Цейсс-1000 в реальном времени . ... Последнее обновление: 22/03/2016 ...

ATM Forum Message . Forums: . ... Post . ... Measuring Resolution . ... Post Message | ... Posted by Amanda on April 20, 2007 22:08:30 UTC . ... resolution - rick_crockett - April 25, 2007 - 08:46 UTC . resolution - aschilli - April 30, 2007 - 00:08 UTC . Indoor resolution - rick_crockett - June 2, 2007 - 07:04 UTC . ... www.astronomy.net . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... Discussions about options for introducing polarizing optics to the high resolution spectrometer NES, recently developed at the 6m telescope by V.Panchuk, have also been held. ... A strong double-peaked emission in the H-alpha line was found in 1985 and explained in terms of a rotating equatorial disk model, first proposed by Jones et al. (1993) for this object. ... Based on high resolution optical spectra we obtained in 1995, the effective temperature Teff=8500K has been estimated for IRC+10420. ...

... Previous: Background Fluctuation Analysis from the Multiscale Entropy . ... A new measure of information is defined which is based on noise modeling and incorporates resolution scale. Properties of this measure are discussed. ... Additionally it allows for image noise modeling, and subsequent noise removal. ... Hence information- and entropy-based processing technologies will be necessary for the effective design and implementation of large, future generation, image databases. ...

Figure 2 Microcalorimeter resolution example. The two pannels in the plot show histograms of the filtered pulse heights that result from left: random samples of the microcalorimeter voltage (a measure of the intrinsic detector resolution) and right: pulses from the absorption of Mn K-alpha x-rays. The smooth curves are gaussian profiles with the FWHM as labeled; in the right pannel the gaussian profile has been convolved with the shape of the Mn K-alpha x-ray line doublet. ... 617) 495-7062 . ...

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australia Telescope 20GHz Survey . ... Images . ... An Imaging Survey of the Northern Galactic H Emission with Arcminute Resolution . ... We present preliminary results from a high-resolution, high-sensitivity imaging survey of the northern galactic H emission. ... Our observations place stringent limits upon the contribution to the apparent microwave fluctuations from free-free emission in the galactic foreground...

These are very prominent absorption lines is most all galaxies. ... These pair of absorption lines will appear in all the spectra and they should be your principle source for determining the redshift. ... When this applet opens you will see an iconic representation of galaxies in the left hand side of the applet and a target area in the right side of the applet. ... Note: What you are doing in this excercise is identical to what Hubble did in the 1920's and you are using the same galaxies. ...

... No flares were detected during the 3.5 hours of monitoring. ... The resultant spectrum was of sufficient quality to allow the detection of emission lines with an integrated flux of 10$^{-15}$ erg cm$^{-2}$ s$^{-1}$ or greater. Lines of C I, O I, O V, Cl I and Fe XXXI were detected. ... From the upper limit on the observed line width, we derive an upper limit of 38 km s$^{-1}$ for the turbulent velocity in the 10$^{7}$ K plasma. ...

Subatomic resolution on Cu(014)-O . 3nm x 3nm STM image of the Cu(014)-O 0.5ML surface measured with MnNi tip. ... This result has been discussed in Phys. Rev. Letters, 98, 206101 (2007) (A.N.Chaika, V.N.Semenov, S.S.Nazin, S.I.Bozhko, S. Murphy, K. Radican, I.V.Shvets, "Atomic Row Doubling in the STM Images of Cu(014)-O Obtained with MnNi Tips"). Image courtesy of A.Chaika. The image was measured in constant current mode using RT STM GPI-300. Copyright ISSP RAS, LSSS, 2006-2007 . ...

Swift/ XRT radiation damage and results from the lab using a proton-damaged CCD Claudio Pagani (Swift/ XRT team) XMM Calibration Meeting, Leicester, 7/3/2012 XRT CCD e2v CCD -22 detector (developed for EPIC MOS camera on XMM) Operated in Photon Counting (PC) and Windowed Timing (WT) mode 4 55Fe corner sources continuously illuminate CCD corners, used to monitor CCD performance Spectral resolution at launch: FWHM = 135 eV at Mn K- (5.9 ...

... Science Users Information > Science Publications > Science Announcements > Improvement to FLAMES Spectral Resolution and Sensitivity . ... The FLAMES GIRAFFE spectrograph is not kept at a controlled temperature, and thus, at the beginning of every observing block, GIRAFFE is re-focussed to take account of collimator temperature. ... The updated values lead to a substantial increase in spectral resolution and sensitivity across all settings, particularly for the high resolution ( HR ) settings. ...

The study of energetic particles acceleration and transport within the magnetosphere and on its boundaries is the main goal of DOK-2 experiment on Auroral Probe in a frame of INTERBALL project. ... DOK-2 uses two pairs of energetic particle telescopes . ... This information is available only during the most informative Real Time mode of DOK-2. ... Full 56-57 channel spectra accumulated during time intervals from 10 s to 1464 s depending on a particle intensity. ... For this time interval: . ...

ENERGETIC PARTICLE EXPERIMENT DOK-2 . ... Due to much higher energy, angular and time resolution, better separation of electrons and ions it is expected that DOK-2 experiment will allow to re-examine in more details energetic particle population and related processes in magnetosphere regions covered by the spacecraft orbit. ... Thin foil in front of detector absorbes protons with energies E<400 keV so this detector measures electron spectrum in 20 - 420 keV range. ... Energy values, keV . ...

Static Fourier spectrometers are often used for spectral measurements of the ionosphere emissions. There are two main advantages of Fourier spectrometers (FS) - large geometric factor and high spectral resolution; these parameters are two orders better than for grating spectral instruments. ... In scanning Fourier spectrometer optical and electric modulation of signal is used to avoid this problem, for static Fourier spectrometer there are no such ways. ...

... Clearly, what we need is big telescopes with high resolution spectrographs, to get good data on QSO absorption-lines. With bigger and better telescopes, you could measure the clustering and 3D distribution of gas in the early universe, by looking at lots of faint QSOs in the same parts of the sky. ... With the high resolutions made possible by big telescopes, you could look at the internal velocity structure of the absorbing clouds. ...

NATIONAL ASTRONOMY AND IONOSPHERE CENTER . ... Astronomy . ... Visitor Center . ... Optical . Lidar . At Arecibo we have a variety of optical instruments that we use to study terrestrial airglow emissions. ... This equipment is located in our Optical Laboratory, which is on site about 1000 feet from the center of the incoherent scatter radar. ... The various observational modes that are available are described in supplementary documentation for the Arecibo Observatory Optical Laboratories. ...

... After hearing and discussing Rocket-Space Corporation Energy General Designer U.P.Semevov's report on the fulfilling the flight program of the orbital complex Mir and proposals on its further exploitation, the Council draws attention to: . ... According to the Russian Government Resolution No. 76 of January 21, 1999 a large amount of work to find and attract Russian and foreign investments to provide the further exploitation of the orbital station Mir was carried out. ...