... It was then mounted on the telescope and the cal values were measured using absorber and sky (see measuring the cals on the telescope using absorber and sky for a description). ... Blue: the cal value computed using the absorber and sky (y factor). ... Blue: a 3rd order polynomial fit to the absorber (red) and ratio (blue) cal values versus frequency (the green sky only cal values were not used). ... The 3rd order polynomial fit versus frequency only used the absorber and absorber/sky ratio values. ...

Integration and performance of the flight configuration SIR on TELIS P. Yagoubov1, G. de Lange1, A. de Lange, M. Romanini, R. Hoogeveen1, V. Koshelets2, G. Wagner3, M. Birk 1Nation 3 al Institute for ... Netherlands 2Institute of Radio Engineering and Electronics, IREE, Russia 3Institute for Remote Sensing Technology, DLR, Germany Abstract TELIS (Terahertz and submm Limb Sounder) is a cooperation between European institutes, DLR, RAL and SRON, to build a three- ... LO frequency 624.93 GHz. ...

... Luminosity (L) · · · · A source's luminosity is the power that it emits in radiation. ... NB Astronomers often say `flux' when they mean `flux density' · SI units are Wm-2Hz -1 -26 filter · Also used are Jy 10 Wm-2Hz -1 E= РРРF d dA dt Specific Intensity, Surface Brightness (I) · Specific intensity (or surface brightness) is the power received (or emitted) per unit area per unit frequency per unit solid angle. ч F at surface of a spherical source = I · · Specific intensity is independent of distance...

Next: AIPS Frequency Bugs Up: Reading Visibility FITS Files Previous: Reading Visibility FITS Files . fits knows enough about the ATCA and a select group of other telescopes to provide some nominal values for parameters that FITS does not store - for example a system temperature of 50 K and a system gain of 13 Jy/K are stored with ATCA data. fits also attempts to estimate the integration time. ... You can correct these with the task puthd . ... PUTHD . ...

... In spite of the good potential possibilities, some of the station "Dnepr" design characteristics did not allow us to apply the usual special IS radar measurement methods. ... Thus for IS signal measurements at the "Dnepr" station, we have developed special methods for recording and processing IS signals in order to determine plasma ionospheric parameters. ... Equations (4-5) from the basis for data post processing to obtain ionosphere parameters. ...

Feed cabin Nr. ... Fig. ... This allows to realize the sensitivity at frequency ranges 4.8, 11.2 and 30.0 GHz of 5, 7 and 12 mK by double beam switching mode and by the integration time of the output filter 1s. Input waveguide paths were very long and had big losses. ... The focal line of the feed cabin Nr. ... Data Acquisition and Control System . The Data acquisition system of the feed cabin Nr 2 is based on the new measurement ER-DAS system (Embedded Radiometric Data Acquisition System). ...

MARSES Project Information . MARSES is an integrated research experiment devoted to searching for water, water-ice or permafrost layers believed to exist at some depth under the visible surface of Mars. ... Secondary tasks are the measurement of the soil properties of the subsurface of Mars which include porosity, electrical resistance of the liquid phase, thermal conductivity, temperature dependence. ... Jean?s escape of water via the atmosphere is very slow (of the order of 3 m over 5 Gy). ...

... A bolometer consists of a thermometer with heat capacity C mounted on an absorbing substrate, weakly coupled to a bath at temperature T 0 via a thermal conductance G ( Figure 1 ). ... We have developed a new bolometer concept using a non-dissipative thermometer coupled with a heat switch to break the link between thermal conductance and performance. ... Temperature changes in the bolometer thus depend solely on the integrated infrared power incident on the absorber. ...

... The basic principles of incoherent scatter: . ... Because of the electron movement, spectrum of the observed signal is broad and it has shape which depends, e.g., on the temperature. ... ion temperature . ... According to the theory, Ti should be replaced by (2Ti,perp + Ti,par)/3 (Williams and Jain,1986; Glatthor and Hernandez, 1990; Winser et al., 1990). ... Glatthor, N., and R. Hernandez, Temperature anisotropy of drifting ions in the auroral F-region, observed by EISCAT, J. atmos. terr. ...

... Electrode polarization measurements . ... Processing of ceramic materials, electrode systems and electrochemical cells . ... The measurements are carried out in the 3-electrode cells with working (WE), counter (CE) and reference (RE) electrodes. ... The impedance measurements enable to separate Ohmic losses associated with the resistivity of the electrochemical cell components from the polarization losses resultant from slow kinetics of the electrode processes: . ...

... Galaxies 99 Cosmic background with model of cloudy interstellar medium Yu. ... Figure 1: Averaged spectrum of the cosmic background I f in frequency range 0.25 200 MHz for the Galactic poles. ... First interpretation of the cosmic noise background spectrum at broad band frequency range 0.25 200 MHz with a model of the cloudy interstellar medium ISM is presented here. ... Synthesized background spectra I f for regions of the Galactic poles at the frequency range 0.25 200 MHz is presented in Fig. ...

Subject, Problems and Objects of Theoretical Astrophysics. ... Stellar Photospheres, Their Features. ... Physics of Continuous Radiation Absorption in Stellar Photospheres. ... Continuous Radiation Absorption in Stellar Photospheres of Various Spectral Classes. Solar Type Photospheres. ... Characterisics of Absorption Lines. ... Interstellar Absorption Lines, Their Features. ... Physical and Dynamic Features of Interstellar Medium, Which Follows from Observations of Interstellar Absorption Lines. ...

... Measure spectrographic field distortion . ... Test collimation . ... The systems that comprise the 2.5-m Sloan Digital Sky Survey (SDSS) telescope must be tested as installation and integration occurs so that problems are discovered at the component and subsystem level rather than at the system level where debugging is more expensive and time consuming. ... This document complements the telescope tests dependency chart that is available as a postscript file. ... Z1 == azimuth axis (zenith direction)...

Variations of total ozone content and lower ozone stratosphere temperature in Antarctic Region during winter-spring period A.V. Grytsai National Taras Shevchenko University of Kyiv Astronomy and Space Physics Department assen@univ.kiev.ua Data, used in the work work Total ozone: Total Ozone Mapping Spectrometer (TOMS) measurements during 1979 - 2005 and Ozone Monitoring Instrument (OMI) ones for 2006, for http://toms.gsfc.nasa.gov/ftpdata.html. ... A long-term TOC decrease is significant. ...

Theme: Early universe and fundamental physics Current data (e.g., large scale isotropy as revealed by the CMB data, the peaks in the CMB anisotropy power spectrum) support the idea of an epoch of inflation at early times during which the universe experienced exponential expansion. ... The CMB, on the other hand, offers a unique way to observe these gravity waves by their unmistakable signature in the polarization anisotropies on large angular scales, where their amplitude is the largest. ...

... Several CCD suppliers specify their devices without taking into account the effects of dark current and temperature. ... The influence of dark current is becoming more important, especially with larger integration or storage times at elevated temperatures. ... The temperature will influence the dynamic range through dark current, shot noise on the dark current and temporal noise of the output amplifier. ... Increasing the integration time automatically increases the dark current. ...

... Sky: . ... Temperature K . Dark current e - /s/pix . Emissivity . ... Adopted integration time s . ... Object signal e - /pix . Sky thermal signal e - /pix . Sky OH continuum signal e - /pix . Sky OH line signal e - /pix . Telescope thermal signal e - /pix . AOS thermal signal e - /pix . Dewar signal e - /pix . Dark signal e - /pix . Total signal e - /pix . ... This tool models the performance of the Gemini Near-infrared Integral-Field Spectrograph (NIFS) . ...

. E. Swedenborg (from "Heavenly City") . List of scientific publications . List of preprints in the ArXiv . Lectures etc. (*.ppt) . My CV . Photos . Old version of the HomePage . Our paper . on the cover of . A . Phone: +7 (495) 939-50-06 . Review (in Russian); Poster on CNOC3: Gould Belt; Poster for SN1604: kicks.

... According to the most popular cosmological paradigm, the greater part of the galaxy mass is accumulated in the dark matter halo. ... The polar ring galaxies (PRGs) reveal external rings or disks of gas, dust and stars rotating in a plane roughly perpendicular to the disk of the central galaxy. ... The shape of the dark halo in the model was chosen so as to achieve the best fit to the observed rotation of both galaxies themselves and their polar rings. ... The SPRC-7 galaxy. ...

... FIELD | ... static int . ... Field Detail static final int AREA . ... Constant Field Values . static final int MEAN . ... static final int STD_DEV . ... static final int MODE . ... static final int MIN_MAX . ... static final int CENTROID . ... static final int CENTER_OF_MASS . ... static final int PERIMETER . ... static final int LIMIT . ... static final int RECT . ... static final int LABELS . ... static final int ELLIPSE . ... static final int INVERT_Y . ... static final int CIRCULARITY . ...