. To the IUM main page . How to choose a Right Discretization of the Continuous System? A lot of important works were dedicated to this problem. Two different sources of the right discretizations of the systems with "soliton-type" hidden symmetry will be considered in the talk: the existence of the Euler-Darboux-Backlund and Laplace type transformations of the linear operators is the main source of our approach to the proper discretization of the linear and nonlinear systems.

VSA74 Manned and man-related spaceships by Sergei A. Voevodin . Launch, docking/undocking and landing times, designations and more. The document can be found in PDF format at Russian Aerospace Guide site.

ADC CATALOG HOLDINGS SHORT TITLE LIST March 29, 2002 (adapted from ftp://adc.gsfc.nasa.gov/pub/adc/archives/catalogs/key) Category 1: Astrometric and Positional Data - March 29, 2002 1090 Positions of 502 Stars in Pleiades Region (Eichhorn+ 1970) 1107A Washington Cat Visual Double Stars 1984.0 (Worley, Douglass 1984) 1131A SAO Star ...

An Electronic Version of the Second Volume of the General Catalogue of Variable Stars with Improved Coordinates N.N. Samus', V.P. Goranskii, O.V. Durlevich, A.V. Zharova, E.V. Kazarovets, N.N. Kireeva, E.N. Pastukhova, D.B. Williams, and M.L. Hazen, ======================================================================== Astronomy Letters, Vol. ... The main table is presented in the form traditional for the GCVS, i.e., in the order of constellations and variable-star names adopted in the GCVS. ...

... Under certain conditions, like those in the nucleus of a QSO, all atoms can be made to emit light at particular wavelengths. ... If that source is approaching the observer, the wave is squashed up onto itself making the wavelength shorter. ... This is redshift. ... You can see how the section of the QSO spectrum which we observe changes with redshift. ... We then see how far we had to slide the observed spectrum along the scale to make it match and that is the objects redshift. ... The 2QZ team . ...

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... Advises . Contact Advises . As an advise for amateurs we would like to underline: if it's possible, try to observe 3 asteroid positions per night and do not neglect to observe the Numbered Minor Planets in your telescope field of view as a "by product" of your observational programs. ... We think such estimations ought to be produced every morning after CCD observations of the moving celestial objects by observer himself. ...

Download Izmccd (~2.7 MB). Solution of problems at identification of star field. ... 2) Scale is not correct. ... In this case algorithm of identification will revise all values of scale from twice smaller up to twice greater. ... There should be more than value of the field "Number of stars in frame". ... The star field is considered identified if number of the identified stars more or equally to this value. It is necessary to set value from 4 up to value of field "Number of stars in frame". ...