... V. measurement error and EM . ... What is systematic error ? ... Astronomers sometimes call it measurement error . ... Statisticians? measurement error generally corresponds to astronomers? statistical error , not systematic error. This systematic error could be related to nuisance parameters, profile likelihoods, hierarchical Bayesian modeling, or a fixed bias (empirically known or other source provides its estimate ? ... Tags: measurement error , statistical error , systematic error . ...

... Bojan Nikolic web pages home . ... I've posted a short note on using 183 GHz Radiometers to correct for . the atmospheric emission fluctuations that can limit total power . observations. The note is available at: . ... Please enable JavaScript to view the comments powered by Disqus. blog comments powered by Disqus . Copyright 2012, Bojan Nikolic feedback welcome ...

... Categories: calibration GPDOF estimates the likely error in a calibration solution, by calculating the errors in the "Degrees-of-Freedom" (dofs) of an interferometer. This is useful for calibration of high-precision circular polarization observations. ... Finally, GPDoF calculates the std and standard error of the derived dofs, which you can use to estimate the errors in the Stokes V of a target observation. ... GPDoF estimates the std and standard error in the dofs. ...

Proposal Identification No.: T2740 Date Received: 2012-Apr-02 15:28:35 Technical Page Proposal Type: General Category : Observation Category : Total Time Requested: Minimum Useful Time : Prop osal Title: Urgent Terrestrial Aeronomy Exosphere 36 Hours The Burnside Factor Revisited: A Model-Independent Ion Momentum ... ABSTRACT: to complement T2660 see attached pdf Name Sixto A. Gonzalez Institution Arecibo Observatory E-mail sixto@naic.edu Phone 787-8782612x252 Student no ...

... Spectrometer and CCD camera attached to the 2 metre "Karl-Zeiss-Jena" telescope of the Observatory on peak Terskol (3100 m, Northern Caucasus). ... The accessible spectral range is ~3500 - ~10200 AA. The CCD camera and the data handling system, developed at SAO, consist of front-illuminated CCD device of 1024x1024 pixels (pixel size 16x16 mkm) inside a dewar, an electronic controller-interface and a IBM PC computer. ... R=45 000 (~90 spectral orders, ~3500 - ~10200 AA registered simultaneously) . ...

... Convert from raw counts to count rates by dividing each data point by exposure time and correcting for disabled diodes. ... For paired aperture or spectropolarimetry observations, a second flatfield file is used. fl1hfile,fl2hfile . ... Object data are normalized to the reference aperture used to derive the average inverse sensitivity used in AIS_CORR. ... Uses inverse sensitivity file (iv1hfile) and, for paired aperture or spectropolarimetry, file (iv2hfile). iv1hfile,iv2hfile . ...

Next: Data reduction Up: Spectral observations and data Previous: Spectral observations and data . All results presented below have been obtained by observations with the Russian 6m telescope, mainly in the snap-shot mode during 4 runs between December 1998 and February 2000. ... We used a grating with 300 grooves/mm (see log of observations in Table 2 ) and a long slit of 2 40. ... Additional data were obtained with a grating of 650 grooves/mm giving a dispersion of 2.4 ?/pixel. ...

Организаторы: Michel Balazard (CNRS, Лаборатория Понселе) , Михаил Цфасман (CNRS, Лаборатория Понселе, ИППИ РАН) , Алексей Зыкин (Лаборатория Понселе, ГУ ВШЭ) . О конференции . Общая информация . ... Практическая информация . ... Using Miyawaki-Ikeda lifting and Rankin-Selberg method I explicitly compute critical values for spinor and standard L-functions attached to Siegel cusp form of genus three and weight twelve. Страница Лаборатории Понселе . ...

A computer controlled low light photometer for nightglow observations. Hardware units of portable photometer for low light measurements, especially night glow emission is described. ... Interface card contain three channels of 24 bit counter, 4 channels of 12 bit ADC and the buffer bus for the controlled motors of the altazimuthal fork mounting and filters wheel, the position encoders. ... Where N( ) is output signal photometer generated input light flux F( l ) . ... PMT # . 599 . ...

... Down), have conducted astrometric observations of main-belt and near-Earth asteroids using the Observatory's ST-7 CCD camera attached to the Armagh Planetarium's 10-inch Meade Schmidt-Cassegrain telescope. Three main-belt asteroids were observed, namely (304)Olga, (849)Ara and (1146)Biarmia. ... It is believed that these observations were also the first Earth-approaching near-Earth asteroid to be observed with the Faulkes Telescope (see http://star.arm.ac.uk/press/2000PH5.html). ...

... This task operates on event data in an event list. ... In the first two cases, the celestial coordinates of the reference point are taken respectively as the values of the RA_NOM , DEC_NOM or RA_OBJ , DEC_OBJ values in the input event file header. ... Although the OM attitude information may be more accurate, it will not be present throughout part of the observation, and as such, the default source for the attitude data should be "ahf". ...

... Science User Portal . ... ESO, the European Southern Observatory . ... Travel and Contacts . Travel to ESO Headquarters . ... Travel to E-ELT Armazones . ... Green ESO . ... VLT/Paranal . ... Survey Telescopes . ... Star Clusters . ... Stars@ESO . ... ESO Science Newsletter . ... Telescopes Instruments . ... VLT Instruments . ... SPHERE . ... VLT Unit Telescopes Names . ... ESO 3.6-metre telescope . ... The SPHERE instrument is shown shortly after it was installed on ESOтАЩs VLT Unit Telescope 3. ...

... Next: The PROS Big Up: Software Systems Previous: Data Reduction Software . ... The srcinten task provides PROS users with a tool to compute count rates for point sources in the ROSAT High Resolution Imager (HRI). ... Corrected upper limits are cited at locations where the count rate falls below the source detection threshold. ... Srcinten is a new PROS task that computes and applies the above correction factors to the net counts in a user-specified aperture. ...

The space probes Pioneer 3 and 4 detected a wide belt of trapped particles beyond the inner belt. ... We now know that outer-belt ions and electrons probably come from the long "magnetic tail" of stretched field lines on the night side of the magnetosphere. Two radiation belts . ... When the outburst ends and the electric field dies away, the particles find themselves locked in trapped orbits of the ring current and the outer radiation belt. ... Exploration" home page (index) Glossary . ...

The AstroGuide . ... AstroGuide | ... AstroGuide Listing . Login . See many more Astronomy Listings by: Category or Alphabet . ... They also provide consulting services in the general area of scientific data acquisition and visualization. ... Listed Since February 16, 1999 . ... Web Site . ... Web . ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . are trademarks of John Huggins ...

... A few pictures on the progress of the #1 spectrograph. Currently residing in the work area on a lab bench, the spectrograph is powered and connected to the network. ... Also, the spectrograph's black mounting plates are visible on top of the blue case. The spectrograph's computer controls are displayed with its power source and Xyplex computer connection active on top of the case. The blue CCD as it would attach to the spectrograph is demonstrated. ...

... AstroAsciiData is a Python module to handle ASCII tables. ... The idea to develop this Python module emerged from the fact that ASCII tables continue to be one of the most popular and widely used data exchange formats in astronomy and probably science in general. ... To load this ASCII table, go into Python, load the AstroAsciiData module and read in the table with: . ... demo = asciidata.open('webexa.txt') . ... Users who only want to work with ASCII tables neeed no further python modules. ...

MINUTES of the RadioAstron Teleconference on May 30, 2006 V. Slysh chaired the teleconference. The agenda of the teleconference and the list of participants are attached to the Minutes. ... N.Kardashev informed the participants on the status of interactions with NASA. ... Canada NRAO, USA ASC, Russia ASC, Russia NRAO, USA NRAO, USA MPIfR/ASC MPIfR, Germany NRAO, USA ASC, Russia NRAO, USA ISAS, Japan ASC, Russia JPL, USA NRAO, USA ASC, Russia ASC, Russia ESA, the Netherlands ...

A prefs.ccd file should be located in /usr/local/observatory/prefs on the computer to which the camera is attached. ... Parameters that will be read by prefs.ccd are -- ccd.frame_count_multi Sets the maximum number of frames in multi mode Default is 10 Minimum is 2 No maximum ccd. filter _max Sets the number of filters in the filter wheel Should be less than or equal to the number of slots available ccd. filter _01 to ccd. filter _10 Labels for each ...

... Impact on source motion in Galactic coordinate system is given by Kovalevsky (2003), Malkin (2011) l cos b = -A sin l, b = -A cos l sin b, where A = R0 02 /c is the galactocentric acceleration called hereafter the GA constant. ... We just have to return to the traditional many-centuries-old astrometric practice of modelling the position of a celestial object as a linear trend with two parameters: the position at the initial (conventional) epoch and the apparent (proper) motion. ... 2011). ...