... Flux density at 1 GHz (/Jy): 60? ... Notes: Has been suggested as the remnant of the SN of AD 185? ... Optical: RCW 89 is the H emitting region to the NW. X-ray: Partial shell, central nebula and pulsar and `jet'. Point sources: Radio and X-ray pulsar, with wind nebula. ... 1977, ApJ, 214, 179. ... 1981, MNRAS, 195, 89. ... X-ray observations of pulsar. ... X-ray observations of pulsar and nebulosity. ... Chandra observations of pulsar and nebula. ... X-ray observations of pulsar and nebula. ...

... Most data from ATNF observatories distinguishes on and off source data using the file name. This makes it easy to create two scantables with the source and reference data. As long as there was exactly one reference observation for each on source observation for following method will work. For Mopra and Parkes data: ASAP> r = scans.get_scan('*_R') ASAP> s = scans.get_scan('*_S') . For Tidbinbilla data ASAP> r = scans.get_scan('*_[ew]') ASAP> s = scans.get_scan('*_[^ew]') . ...

True Color Image Gallery: Galactic SNR | Magellanic Cloud SNR . left: radio image . right: chandra x-ray image with radio contour lines . ... Radio fits file . ... 2006 , ApJ, 653, L37 : Chandra observation . ... 2009 , ApJ, 695, 431 : XMM observation . Back to G330.2+01.0 Index . Chandra Supernova Remnant Catalog . ... Galactic SNR | ...

Standard calibration observations are obtained and maintained in the HST archive at the STScI, and can be retrieved by external users using StarView. ... For WFPC2, the inherent stability and uniformity of the CCD sensors, the well-calibrated filters, the internal flat field calibration system, and an archive populated with flat field images obtained in SLTV prior to launch improve the scientific data analysis and productivity. Hence the need for on-orbit calibrations has been minimized. ...

... See also MRC 1Jy sample I. and MRC 1Jy sample II. 20deg but excluding the R.A. range 14h03m--20h20m. Quasar classifications are based on high-resolution radio images, deep optical identifications, and follow-up spectroscopy of sources in the strip. The relatively low radio frequency of the finding survey and the complete optical identification of quasars to faint magnitudes ensure that the MQS is relatively free from orientation biases that affect most other samples of radio-loud quasars. ...

... available from http://www.vsop.isas.ac.jp/ops/VSOG_doc.html . draft dated 1 July 1996. ... dated 12 March 1996. ... version 2.0, dated 14 Dec 96. ... version 2.0, dated 19 Feb 1996. ... version 1.0, dated 11 October 1996. ... version 3.0, dated 10 April 1996. ... version 1.1, dated 30 July 1996. ... version 1.10, dated 13 Nov 1996. ... version 1.0, dated 05 Sep 1997. available from http://www.vsop.isas.ac.jp/ops/VSOG_doc.html . ... draft version dated 27 November 1996. back to top . ...

... PUL VLBI Analysis Center . ... Pulkovo EOP and Reference Systems Analysis Center (PERSAC) is located at the Pulkovo Observatory . ... Processing of VLBI , GPS, and optical observations aimed at analysis of the Earth rotation, station displacement, and celestial reference system. ... Celestial Pole Offset (CPO) and Free Core Nutation (FCN) . Four daily updated CPO and FCN series (models) are provided. ... File fcn1.dat contains the ZM1 FCN model with variable amplitude and phase. ...

... Despite new observation methods provided by radar and satellite instrumentation , optical measurements are still important when studying auroras . ... Because of the monochromatic nature of the auroral light, photomultiplier tubes with very narrow band filters were used in the measurements. ... The spectra of the background emissions from atmospheric impurities (clouds, ice crystals, etc.) is rather continuous, and measurements just outside the auroral emission lines are valid for the line itself. ...

Next: Cross References between CCF Up: Applications of CCF Previous: Applications of CCF Contents . Table 2: Cross reference of mirror CCF components to In-Flight Calibration Plan. Target Name . ... PSF . ... FilTransX, QuantumEf, XAreaEf . ... Table 3: Cross reference of EPIC CCF components to In-Flight Calibration Plan. ... Table 4: Cross reference of EPIC Inflight Calibration Targets to CCF components . ... Table 7: Cross reference of In-Flight Calibration Targets to OM CCF components . ...

... Discovery of 47-s pulsations in the X-ray source 1RXS J225352.8+624354 / arXiv:1305.3439 , May 2013 . ... Optical spectroscopy of X-ray source IGR J22534+6243 / Atel # 4248 . ... Search for counterparts of newly discovered INTEGRAL/IBIS sources / Atel # 4166 . New INTEGRAL Galactic Plane Survey in SkyView / blog . Likely X-ray counterparts of newly discovered INTEGRAL/IBIS sources / Atel # 4165 . AGN in the INTEGRAL/IBIS 9-year Galactic hard X-ray survey / Atel # 4151 . ...

Up: A Method of Integrating Previous: Observational data . ... Chernenkov V. N. : 1996, The automatic data acquisition and control white band radiometers complex for observing at RATAN-600. Prepr. Spec. Astroph. Obs., ... Christiansen U., H?gbom I.: 1988, Are Radio-telescopes, "Mir", M., 266 . ... Erukhimov B. L., Vitkovskij V. V., Chernenkov V. N., Shergin V. S.: 1988, Are robust algorithms using for compression observations date for white band radiometers at RATAN-600. ...

... Previous: Pipeline Processing and Quality Control for Echelle Data . ... On-the-fly re-calibration of HST data (OTF) has now been available at the CADC and ST-ECF for about 18 months. ... The calibration can only be executed using the calibration reference files which are available at that time. ... On-the-fly re-calibration has another advantage for our archive sites: we only need to keep the raw data and calibration reference files on-line for the process to be automatic. ...

lsst.coordConv љ unknown . ... coordConv::FK5CoordSys Class Reference . ... FK5CoordSys (double date=2000.0) . ... clone (double date) const . ... taiFromDate (double date) const . ... CoordSys (std::string const &name, double date, DateTypeEnum dateType, bool isMean , bool canConvert ) . ... convertFrom (double &toDir, double &scaleChange, CoordSys const &fromCoordSys, Coord const &fromCoord, double fromDir, Site const &site, double tai=0) const . ... virtual coordConv::FK5CoordSys::~FK5CoordSys . ...

The database contains references to the papers, data files and links to the Internet resources related to measurements and calculations of the optical constants in the wavelength interval from X-rays to radio domain. ... References to some useful books and reviews on the subject (e.g. the classical handbooks edited by E.D.Palik) and links to Internet collections of optical constants and personal WWW pages with related software were also placed in the database. You have arrived at our welcome page. ...

... 22.Reference Frames . ... To derive the motion of a penny dropped inside an airliner moving at 600 miles/hr (about 1000 km/hr)--should we calculate it with respect to the interior of the airliner, or with respect to the ground? ... And if a similar penny is let go inside an orbiting spaceship--should its motion be calculated relative to the interior of the spaceship, or relative to the Earth outside? ... How do observations differ in the two frames--the airliner cabin and the Earth? ...

. Next: Widget routines Up: CHAMELEON Previous: dat_ Contents . Subsections . Widget routines . F ILE . A CCESS B ROWSE . A CCESS I NTERFEROMETRY . A CCESS P OINT D ATA . A CCESS W RITE . R EDUCE . R EDUCE P OINT D ATA P LOT . C ALIBRATE . C ATALOG . WAVE . Organization of data . Array configuration . Optical path lengths . Basic definitions and sign conventions . Command line procedures . Plotting . Adding plot variables . Adding plot classes . Christian Hummel 2015-04-28

The NTP Version 3 daemon currently supports several different radio, satellite and modem reference clocks plus a special pseudo-clock used for backup or when no other clock source is available. Detailed descriptions of individual device drivers and options can be found in the Reference Clock Drivers page. Additional information can be found in the pages referenced there, including the Debugging Hints for Reference Clock Drivers and How To Write a Reference Clock Driver pages. ...

Stellarium 0.12.3 . ... Classes . ... Pulsar Class Reference . ... Pulsar (const QVariantMap &map) . ... Get a QVariantMap which describes the pulsar. ... getSelectPriority (const StelCore *core) const . ... getInfoString (const StelCore *core, const InfoStringGroup &flags) const . ... getVMagnitude (const StelCore *core, bool withExtinction=false) const . ... getAngularSize (const StelCore *core) const . ... getPositionInfoString (const StelCore *core, const InfoStringGroup &flags) const . ... core . ...

The Arcetri Spectral Code (Landi and Landini 2002) allows to evaluate the spectrum of continuum and line radiation emitted by hot and optically thin plasmas in the spectral range 1-2000 Angstrom. The Code is composed by a large database of atomic data and transition probabilities for calculating spectral line emissivities and a suite of fortran programs able to evaluate free-free, free-bound and two-photon continuum radiation. ... Landi, E., Landini, M., 2002, A , 384, 1124 . ...

... 9) Oknyanskij V.L. 1994, "Optical-radio time delays in Q0957+561", Odessa Astronomical Publ., ... 11) Oknyanskij V.L. 1994, "Connection between X-ray and optical variability in NGC4151", in Proceedings of Int. Conf. ... 1994. 12) Oknyanskij V.L. 1994, "Connection between X-ray and optical variability in NGC4151", Astrophys. and Space Science, 222, p.157. ... 14) Oknyanskij V.L., van Groningen E., 1997, "Optical spectral variability of NGC4151 in 1990", Astronomical and Astrophys. ...