Electronic Catalogue of Comets "Halley" . ... In this paper we give a description of the Electronic Catalogue of Comets "Halley", which makes it possible to calculate the evolution of the orbits of comets, to visualize orbital motion, to determine the circumstances of a comet's close approach to planets within a given time interval, as well as a number of other opportunities. ...

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... Keywords: Proper Motions, Schmidt Plates, Astrometry, Guide Star Catalog, Palomar Sky Survey . In this paper we describe a program of determining proper motions from digitized scans of 1950's-era Palomar Sky Survey (POSS) Schmidt Plates and 1980's-era Palomar Oschin Schmidt `Quick V' plates that were taken for the Hubble Space Telescope ( HST ) Guide Star Catalogue. ... Arrows indicate the magnitude and direction of the proper motion for the stars. ...

... Binary orbits in the acceleration/period plane . Circular Orbits . ... We first present the equations for the period and acceleration of a pulsar in an eccentric binary system as a function of its position in the orbit. ... In Freire, Kramer & Lyne (2001) (from where most of this text and following equations are taken), we describe in more detail how circular binary orbits can be determined from the observed periods and accelerations of the pulsar. ... where is the orbital period of the binary. ...

... This calibration approach is recommended when dealing with high frequency data from the old ATCA correlator, especially at 3mm wavelengths. ... The approach described here exploits the dual frequency bands that were available with the old correlator. ... Rather the current approach assumes that you have a single Miriad dataset containing bandpass calibrator, phase calibrator, flux density calibrator and program source. ... MFCAL . ... Input multi-source, dual-band dataset. select=source(1921-293) . ...

MRO-ICD-CAM-1100-0108 FTTNAS-FTTA.odt Page 1 of 7 MRO FTT / NAS FLC ICD FTT / NAS Electronics to FTTA Controller ICD MRO-ICD-CAM-1100-0108 The Cambridge FTT Team Rev 1.0 9 May 2013 Cavendish Laboratory JJ Thomson Avenue Cambridge CB3 0HE UK MRO-ICD-CAM-1100-0108 FTTNAS-FTTA.odt Page 2 of 7 ICD Description ... 2.1 Signal definitions.. ... The analogue input interface in the FTT-NAS electronics interface is to accept the full range of output available, specifically: 1. ...

... Format of the orbital elements | Estimation of the extrapolation errors | Version 1" of the orbital elements collection, determined by KIAM during flight and used for operations planning . Version 2" of the of the orbital elements collection, modified by IKI during flight and recommended for the orbital calculations during scientific data processing . ... Three kinds of the INTERBALL Auroral probe (IB_AUR) orbital elements' collections are presented here. ... IKI RAN | SSC IKI RAN | ...

... One of the widely used models of neural network is the multi-layered perceptron [6]. The model network has layers of input and output elements called neurons. ... An input vector is put on the input layer, passes through the hidden layers, and arrives at the output layer. The corresponding output vector is determined by calculation of the neuron activity level for each layer using already known values of neuron activity of the previous layers. ... Training was an iterative process. ...

... It includes level converters and a optional radio modem designed to decode the radio timecode signals transmitted by the Canadian time and frequency station CHU. A complete set of schematics, PCB artwork, drill templates is in the pub/ntp/gadget.tar.Z file on ftp.udel.edu. ... One of these converts a TTL positive edge into a fixed- width pulse at EIA levels and is for use with a timecode receiver or oscillator including a TTL PPS output. ... See the schematic diagram gadget.s01 for reference. ...

... At the operating temperature of -88 C, maintained after April 23, 1994, the WFPC2 CCDs have a low dark background, ranging between 0.002 and 0.01 e - /s/pixel. A relatively small number of pixels have dark currents many times the value. ... The combined file is obtained by using the superdark value for all pixels that appear normal in the weekly dark, namely, for which the dark current value in the weekly dark does not differ from the superdark value by more than 3 . ...

... The distinction of our approach is in that we unite the Actor Prolog concurrent ob ject-oriented logic language [ 1,2,3] with the Structural Analysis and Design Technique (SADT) diagrams to obtain new issues in the following areas: 1. ... Graphic user interface management. ... The individual blocks of visual user interface based on the SADT diagrams are implemented by using parallel processes of Actor Prolog. ... We applied the visual programming method for logic programming of Internet agents [4]. ...

... Science . ... Science Users Information > Libraries > Electronic Books . ... Observing with ESO Telescopes . ... Data Handling and Products . ... ESO Data . ... ESO Data Access Policy . ... eBooks (book series and collections only) . ... Access included in the Physics & Astronomy Springer eBook collection. ... Access to the subject "Science & Engineering > Astronomy". ... Springer eBooks (Physics & Astronomy) . ... Access to Physics & Astronomy and Humanities, Social Sciences & Law eBooks...