1 - flat mirror of the field TV viewer, . 2 - optics of the field TV viewer, . 3 - TV viewer, . ... 13 - dekkers turret of echelle spectrographs, . 14 - mirror of dekkers viewer, . ... 16 - optics of viewer of dekkers turret and of the MSS slit, . 17 - TV viewer of dekkers turret and of the MSS slit, . 18 - TV viewer filters turret. ...

... An internal flat field system provides reference flat field images over the spectral range of WFPC2. These are provided by a "calibration channel" optical system mounted outside the main shroud of WFPC2. ... The flat field illumination pattern is fairly uniform for wavelengths beyond about 1600 . Short of 1600 the flat field is distorted due to refractive MgF2 optics. ... The calibration channel is used primarily to check for internal instrumental stability. ...

... indices rather than retrieve abundances: 1.2, 1.5, 2.0 µm · Work with calibrated radiances rather than relative spectra · Ad hoc atmospheric corrections Spectral index : S( ABCD) - S1 Index = S( ABCD) Correction on atmospheric absorption ·MOLA topography ·CO2: p,T ­ from European Mars Climate Database ·H2O column (Ls, ) - from TES observations ·H2O (, l, z) ­ from GFDL MGCM model ·HITRAN(2004) OMEGA DETECTOR C Wavelength,µm Errors and uncertainities ...

... We will consider the rms, (K), for observations with a receiver of system temperature, T , frequency resolution, per polarization, and total integration time per observing cycle, . ... For ``in-band'' frequency switching, the line under investigation is always in the observing band. ... Position Switching or ``Out-of-Band'' Frequency Switching: Here the line is only observed for one half of the time, with noise being present all of the time. ...

... Fitting packages such as XSPEC do not allow the channel range of the spectrum and that defined in the RMF to differ. ... If the channel range of the spectrum and that of the reponse data obtained from the CAL are found to differ, rmfgen raises a warning and performs one of the following corrective actions: . ... If the channel range of the spectrum is a subset of the response range, rmfgen will truncate the response data to match the channel range. ...

... Initial Setup Tasks . ... IFP#1-LO 6641 - 6657 MHz USB RCP . ... IFP#1-HI 6657 - 6673 MHz USB RCP . ... IFP#2-LO 6641 - 6657 MHz USB LCP . ... IFP#2-HI 6657 - 6673 MHz USB LCP . ... IFP#1-LO 6300 - 6316 MHz USB LCP . ... IFP#1-HI 6316 - 6332 MHz USB LCP . ... Ftp: ftp://ftp.atnf.csiro.au/pub/people/vlbi/v255/v255a . ... The 4 x 16 MHz bandpass setup will require feeding two separate LOs into IFP#1 and #2 on the DAS/frequency translator and splitting the LCP signal so that is feed into both sides. ...

Beam Parameter Measurements New Physics at TeV Scales and Precision EW Studies Eric Torrence University of Oregon Eric Torrence 1/14 March 2005 Beam Instrumentation Introduction 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 490 492 494 496 498 500 502 504 Root(s) (GeV) ( -, - ), ( +, + ), ... dL -----dE L 0 s Fundamental Goal Spin-dependent absolute collision energy spectrum Typical Components · · · · · Beam Energy ... Eric Torrence 14/14 March 2005 ...

. 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.

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. ...

... We present the algorithm and implementation details for the robust, realtime bandpass removal and calibration routine developed for the HI Parkes All Sky Survey project. ... Traditionally, the bandpass that is present in single-dish 21 cm spectra is removed by observing in a ``signal-reference'' mode. ... The robust bandpass removal algorithm implemented for the HIPASS Project successfully produces calibrated HI emission line spectra for most of the survey data. ...

... C ALIBRATE V ISIBILITY : Select PLOT, and flag first the channels since their SNR is usually very low (if you observed with the 3-way system; the 6-way system has only 16 channels). To do this, plot VisSq vs channel, selecting all channels and the All-in-1 option. Then, for calibration, look at the data from the calibrator stars (select them using the information in the StarForm), then select CALIBRATE to display the calibration widget. ...

... Robust Bandpass Removal Traditionally, the bandpass that is present in single­dish 21 cm spectra is re­ moved by observing in a ``signal­reference'' mode. ... Instead, a statistical estimate of the bandpass at the position and time that a particular spectrum---the target spectrum---was acquired is made from a set of earlier and later spectra observed by the same beam---these are the reference spectra. ... I b,p,c is a 1024­ channel flux density spectrum. ... References Barnes, D. G. 1998, this...

INFRARED FOURIER-SPECTROMETER SICH-F . ... Instrument work regimes: 1) Inside. 2) Calibration at inside standard sources 2 - 4 times per a rotation. 3) Calibration at "free space" 2 - 4 times per a rotation. 4) Infrared radiation measuring 10 - 40 min. per a rotation. ... Spectrometer consists of the photodetector block and the block of signal processing and control. ... Diagnostic information and attach data will transfer by state telemetric channels. ... Detector temperature. ...

... ON APPLICATION OF MULTI-FREQUENCY SYNTHESIS FOR RADIOASTRON MISSION. ... The first problem for RadioAstron mission for K-band will improved with using a new LNA / probably identical to . ... For RadioAstron mission it is proposed to operate one K-band circular polarized channel at fixed frequency 22.232 GHz. ... B. One circular polarization channel operates at frequency F0 and the opposite polarization channel operates at minimal frequency F-4. ... Signal and LO frequencies. ...

. Next: Multiple Data Sets Up: *fit* - Fit Data Previous: Two-Temperature Raymond Model . The energy range covered by the default channels depends on the instrument gain. To limit the fit to channels 7 to 30, specify the file with observed spectrum as: rp90[7:30] # will fit as before but using PSPC channels 7 to 30 # in the 34 binning scheme . rsdc@cfa.harvard.edu . 1998-06-10

... Wavelength Calibration . ... 30s wavecal plot . 30s flatfield plot . ... HeNeAr 4400 . B rQrtz 4400 . ... HeNeAr 4500 . ... BrQrtz 4200 . BrQrtz 4500 . ... These figures in the above table show the number of counts received from each of the lamps in a 30 second exposure with the 1.5 arcsec slit. ... Users have the option of taking calibration lamp data at the rotator angle of each object, but in many cases, it should be possible to measure the shift using observations of night sky lines. ...

... The MMT optical spectra of SBS 0335-052W were obtained on 1996 January 19 with the Red Channel of the MMT Spectrograph. ... The linear scale is 1 = 263 pc at the distance to SBS 0335-052W of 54.1 Mpc. ... In Table 1, the observed line intensities and intensities corrected for interstellar extinction for SBS 0335-052W are shown along with extinction coefficient C (H ), observed flux of the H emission line, the equivalent width EW (H ) and equivalent width of absorption Balmer hydrogen lines EW (abs)....

... 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. ...

... Я попытался выделить самые интересные сюжеты, в основном связанные с наблюдательной астрономией и появившиеся в Архиве препринтов в 2006 г. Большинство из этих работ описывались в моих обзорах и было включено в число "лучших из лучших" . ... Непопадание в список каких-то важных работ связано в основном с тем, что "на лету" трудно определить важность статьи вне своей области интересов, кроме того этот год выдался для меня непростым.. ... Authors: Jason W.T. Hessels et al. Статья в Обзорах . ...

... Telescopes . ... The spectrograph is installed in the Nasmyth focus of the BTA telescope, the equivalent focal length is 186 m (F/31). ... The preslit device unit is marked by number 3. ... Fig. ... slit unit of the MSS, 4.1 ? ... The spectrograph slit unit consists of a mirror that redirects the light beam from the Z axis and from the calibration path at an angle of 65њ to the axis of the telescope focus into the slit, the order separation filter, the block of the slit and the shutter (Item 4 in...