Uncertainties are a bit different in counting experiments - this lesson explains how. It also covers averaging and how that affects uncertainties. Back Main Uncertainties Page .

... The low energy plasma composition spectrometer AMEI-2 is built to be able to find in the low energy range of the phase space (E, q, j) and separate the fluxes of the major ion species in the magnetotail - H+, He++, He+ and O+, and analyse their energy and angular distributions. ... Electrostatic angular scanning in one direction and the use of the spin of the satellite to sample the other angle give the ability to measure 2-D distributions for each ion specie several times per spin. ...

EXPERIMENT . ... Measurements of three-dimenstional distribution of ions in the energy range 50-5000 eV/Q. Measurements of energy spectra of ions with M/Q selection (M=1,2,4,16) in the energy range 5-40 keV/Q in the antisolar direction. ... IKI, Moscow, Russia . ... 3-D measurements of the electron component of the plasma (10eV-26keV). ... Measurements of the solar wind ion fluxes and energy-angular distributions of H+ and He++ around the Sun direction with high time resolution. ...

The technical memorandum: Time and Time Interval Measurement with Application to Computer and Network Performance Evaluation (PostScript) describes a number of techniques for conducting experiments typical of computer network and transmission systems engineering. ... The usual data collected during a performance run of some experiment might include time offsets, time delays, frequency offsets and various error statistics. ...

. © IRE RAS 1996-200 6

... Primordial theory review : Dick Bond . Defects and the CMB review : Andy Albrecht . ... Gravitational wave contribution to CMB anisotropies : V.B. Lukash and E.V. Mikheeva . C_l from cosmic strings : Lloyd Knox . Some aspects of CMB anisotropies induced from topological defects : Mairi Sakellariadou . ... CMB anisotropies from scaling sources : Ruth Durrer . ... SZ observations I : Sarah Church . ... Holes in the microwave sky? ... Detecting cosmic strings in the CMB : James Robinson . ...

... B. Bertotti, R. Ambrosini, S.W. Asmar, J.P. Brenkle, G. Comoretto, G. Giampieri, L. Iess, A. Messeri, H.D. Wahlquist: "The Gravitational Wave Experiment" , Astronomy and Astrophysics Suppl. ... B. Bertotti, R. Ambrosini, J.W. Armstrong, S.W. Asmar, G. Comoretto, G. Giampieri, L. Iess, Y. Koyama, A. Messeri, A. Vecchio, H.D. Wahlquist: "Search for gravitational wave trains with the spacecraft Ulysses" , Astronomy and Astrophysics, 296 , 13 (1995). ...

... Archives . ... When it comes to survey, the first thing comes in my mind is the census packet although I only saw it once (an easy way to disguise my age but this is true) but the questionaire layouts are so carefully and extensively done so as to give me a strong impression. Such survey is designed prior to collecting data so that after collection, data can be analyzed according to statistical methodology suitable to the design of the survey. ... Chandra Blog . ... SAMSI AstroStat Prog. ...

... S.P. KOROLEV ROCKET AND SPACE CORPORATION ENERGIA . ... OAO RSC "Energia" . ... Company's History . ... History . Brief History of Rocket and Space Technology . ... Flights Chronology . ... Project History . ISS Russian Segment . Steps of ISS Assembly . Spaceflights Chronology . Chronology of Extravehicular Activity . ISS 45/46 . ... Rocket Space Complexes . ... Launches Chronology . ... Automatic Space Systems . ... HISTORY . ... 2015 JSC "S.P. Korolev RSC "Energia" . ...

... ALFA LIDAR experiment . ... Center for Astronomical Adaptive Optics: measurements of the Atomic Sodium Column Density . ... First Sodium Laser Beacon at La Palma ING Newsletter , March 2000 . ... Ageorges N., Hubin N., 2000, A 144, 533-540 Atmospheric sodium monitor for Laser Guide Star Adaptive Optics , see also other related publications . ... Laser guide star adaptive optics: measuring the sodium column density using a magneto-optical filter , PATRIARCHI P., CACCIANI A ( PDF ) . ...

... Research . ... Geophysical Institute of Czech Academy of Science, Prague, Czech . ... plasma analysator . ... Space Research Institute,Berlin, . ... Space Research Center, . Polish Academy of Sciences,Warsaw, . ... particles analyser . measurement of particles 0.05 - 1.0 KeV for 0.1 sec . Space Research Institute,Sofia,Bulgaria . ... Prague University, . Research Institute of Nuclear Physics,Moscow State University;Russia . ...

Subject, Object and Problems of Astrophysics. Practical and Theoretical Astrophysics. ... Visual Telescope; Problems Which Are Solved with the Its Help. ... Resolution of Telescopes. ... Effectiveness of Telescope in Respect of Resolution. ... Optical Power of Telescopes for Star-like and Extensive Objects. Boundary Magnitude. Reasons of Light Dissipation in Telescopes. ... Spectral Instruments in Astrophysics. ... Basic Photometrical Ideas, Magnitudes and Their Measurement. ...

Stellar photometry of simulated HST uncorrected and corrected images of a crowded star cluster has been carried out before and after deconvolution (with RMG, R-L, MEM, etc.) to optimize the reduction procedures and compare the degree of completeness and photometric accuracy actually achievable in the various cases. ... Pages 319-326 . ...

... EXPERIMENT COLD: . THE FIRST DEEP SKY SURVEY WITH . THE RATAN-600 RADIO TELESCOPE . ... 2 The RATAN-600 Radio Telescope . ... 2.2 Brief Description of the RATAN-600 Radio Telescope . ... Elimination of Discrete Sources . ... Sky Surveys Using the RATAN-600 . ... 5 Astrophysical Problems Studied in Experiment Cold . ... Point Sources, i.e., on Scales Comparable to the Beam of the Radio Telescope . ... Strong" Radio Sources . ... Experiment Cold and the "New-Generation" Radio A stronomy . ...

... Volodymyr Kuzkov, Sergii Kuzkov, Zoran Sodnik - Direct measurements of laser light aberration from the ARTEMIS geostationary satellite through thin clouds // arXiv.org - New resalts to paper at Conference ICSOS-2014, Kobe, Japan, May 7-9 (2014), S4-4, [view pdf file] . ... Kuz'kov V., Volovyk D., Kuzkov S., Sodnik Z., Pukha S. - Realization of Laser Experiments with ESA'S Geostationary Satellite ARTEMIS. ... Preparation to Optical Communication Experiments With ARTEMIS Satellite. ... V.P. Kuz`kov. ...

... Tonight's Sky . ... Astronomy for Kids . ... CERN experiment makes spectroscopic measurement of antihydrogen . ... The ALPHA collaboration at CERN reports an important milestone on the way to measuring the properties of antimatter atoms. ... This measurement shows that it is possible to set up experiments in which the internal properties of antihydrogen atoms can be changed by shining microwaves on them. ... Only registered members of Astronomy.com are allowed to comment on this article. ...

... Contamination on optical surfaces degrades the throughput of an optical system. ... Contamination is particularly pernicious on the unprotected aluminum that is commonly used on the large first-surface mirrors of reflecting telescopes. ... During that period, the covers of their protective cases is opened whenever the 3.5-m telescope primary mirror cover is opened for nighttime observing. ... CO2 clean exposed mirrors in SS case. ... Light scattering measurements performed on cleaned mirrors. ...

... I will describe the first flight of the experiment which took place from Timmins, Canada in Sept 2015 and the in-flight performances achieved. The next flight of PILOT will be from Alice Springq in April 2017 during a flight campaign being operated by the French national space agency (CNES) and prepared in collaboration with the CSIRO. ... The picture shown above was taken from 39 km in the stratosphere during the first flight of the PILOT instrument, from Timmins, Canada in Sept 2015. ...

Eclipses on Mars . Mars has two moons, Phobos and Deimos . ... They are also much closer to Mars than the Moon is to the Earth. ... These phenomena are particularly sensitive to observer location on the surface. ... In context: The Beagle 2 mission . An experiment of this kind will be attempted early in 2004 by instruments on the Beagle 2 lander. ... It should be noted that Phobos itself can be eclipsed by Mars (a phenomenon analogous to lunar eclipses on Earth) and does so almost every night. ...

... The Chandra Ground Calibration Raytrace Database and Simulator provides simulations of tests performed on the Chandra X-Ray Observatory's High Resolution Mirror Assembly (HRMA). ... Prior to its July 23, 1999 launch, the Chandra X-Ray Observatory's High Resolution Mirror Assembly (HRMA) underwent extensive ground calibration (Weisskopf & O'Dell 1997) at Marshall Space Flight Center's X-Ray Calibration Facility (XRCF). ... When determining subsystem parameters the XRCF raytrace simulator, . ...