The beam pattern and the polarization characteristics . of the radio telescope RATAN-600 . The Mueller matrix elements was computed via formulas [1]: . ... The BP were computed by the aperture method, proceeding from the fild distribution in the aperture of the primary mirror. The components of the main and cross-polarization components of the electric field in the vertical aperture of the primary mirror was computed in Frenel diffraction approximation. ...

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... Table 32.2 summarizes the nominal initial accuracies for different kinds of acquisitions. ... FOS Target Acquisition Calibration Accuracies . ... ACQ . ... Blind Pointing . ... In summary, the pointing accuracy limitations of FOS target acquisition methods are: . ... ACQ/PEAK: . ... This was the value achieved by all FOS externally pointed calibration observations obtained after July 1, 1992 and was the ultimate limiting positional accuracy of FOS photocathode granularity and sensitivity calibration...

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• http://www.stsci.edu/documents/dhb/web/c25_stiserror.fm3.html
• WFPC2 PSF Subtraction
• STIS Instrument Handbook

Next: Imaging - INVERT Up: Primary Beams and Mosaicing Previous: Summary of Imaging Strategies . For the joint approach, the reduction proceeds in a fashion which appears very similar to conventional observations. First a dirty image is formed (with associated point-spread function), and then a deconvolution algorithm is used to `clean' this dirty image. ... Imaging - INVERT . ... Next: Imaging - INVERT Up: Primary Beams and Mosaicing Previous: Summary of Imaging Strategies Miriad manager . ...

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• Research - The high-velocity clouds of M31
• Self-Calibration
• Reading Visibility FITS Files

... 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. ...

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• ADASS 2002 Conference Proceedings
• An Extragalactic Point Source Simulator for SIRTF Pipeline Testing
• Enhanced HST Pointing and Calibration Accuracy: Generating HST Jitter Files at

Next: Primary Catalog Up: Observations and Analysis Previous: Source Positions . ... This energy selection allows direct comparison with previous EGRET, COS-B and SAS-2 results. ... The energy spectra shown in the catalog are taken largely from previous EGRET publications (or those currently in the publication process), which discuss the details of source identifications, time variability, and energy spectra. ... Such sources are identified in the catalog. ...

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• Upper Limits for Sources not Detected
• Group IAG
• Big Pixels

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Radio luminosity - spectral type plot for all ultracool dwarfs observed at 4.9 GHz. ... Whilst no radio emission was detected from any of the targets, significant upper limits were placed on the radio luminosities that are below the luminosities of previously detected ultracool dwarfs. Combining our results with those from the literature gives a detection rate for dwarfs in the spectral range M7 тАУ L3.5 of тИ® 9%. ...

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• Observations and Data Reduction
• Research Highlights

... Maps of 21cm emission are dominated by warm H i, and most observations of H i absorption against continuum sources are limited to discrete points. ... Current Results At right are maps of H i emission, HISA, and 12 CO emission in the eastern 25% of the survey, given as projections along the velocity (Figure 1) and latitude (Figure 2) axes. ... 2000, A. J., submitted Figure 1: H i Survey Map (`; b): H i 21cm brightness integrated over all velocity channels; white is bright and black is faint. ...

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• system Performance
• pntModelGradients
• HISA Poster for the 197th Meeting of the AAS, January, 2001

... At the Limit of Diffraction . ... Credit Copyright: Yuri Beletsky ( Las Campanas Observatory , Carnegie Institution ) Explanation: Did you ever want to just look through the eyepiece of a large telescope in space ? If you could, you would see a sharp view that was diffraction limited . ... Still, in this working earth-based snapshot a new active adaptive optics system (MagAO) is being used to cancel out the atmospheric blurring in a visual observation of famous double star system Alpha Centauri . ...

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• Journal "Peremennye Zvezdy"
• Астронет > At the Limit of Diffraction

... Current APO Weather . ... Search Site . ... Information for New Users . ... Technical Staff pages . Night Logs and Mailing Lists (maintained by APO) . ... Technical Documents and Database Search . ... Observer's Documentation and Procedures . ... Problem Reporting and APO Technical Documents Database Search . ... APO Drawing/Document Management Procedures . ... APO Technical Documents Database Search . Home Astrophysical Research Consortium . ... Mail Lists (maintained by APO) . ...

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• Catridge Fiber Reach
• Rotation range
• Measurements of 3.5-m Secondary Mirror Motions

... Flux density at 1 GHz (/Jy): 1040 . ... Notes: This is the remnant of the SN of AD 1054. ... Optical: Strongly polarised filaments, diffuse synchrotron emission, with `jet' faintly visible. ... VLA at 1.4 GHz, radio detection of `jet'. ... Velusamy 1985, MNRAS, 212, 359. ... Aller & Reynolds 1985, ApJ, 293, L73. ... Comparison of VLA observations at 74 MHz, 327 MHz, 1.5 GHz and 5 GHz for spectral index studies. ... VLA at 5 GHz (1".4) and HST multi-epoch observation for proper motion studies. ...

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• G327.6+14.6
• G130.7+3.1
• Radio observations of the Marano Field

... Instrument tuning )! ... Specific calibrations have been performed recently Standardized high energy Crab spectrum would be very useful JEM-X calibration JEM-X is affected by some instabilities which affect software and calibrations: microstrip erosion ( decreased HV and S/N) microstrip ions diffuse into glass plate ( HV adjustments) gain variation ( electronic efficiency to be determined on short time scales) memory effect on microstrips transient hot spots Observations are ...

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• Procedure
• Overview on detection chain constituent tasks
• Description

... Цвет: Бежевый . Пол: Для девочки . ... Материал верха: Полиэстер, Полиуретан . Материал подкладки: Натуральная кожа . ... Туфли бежевого цвета марки MAYORAL для девочек. ... Пол: Мужской . Кеды Botticelli Limited. ... Бренд: Step by Step, Позиционирование: для мал