... The working principle of liquid mirror telescopes (LMTs) is first reviewed along with their advantages and disadvantages over classical telescopes. ... Figure 2: Entire liquid mirror telescope system. ... For the case of multiplely imaged quasars, we find that direct imagery with the 4m International Liquid Mirror Telescope (ILMT) will lead to the detection of approximately 50 new gravitational lens systems ( , ). ... Institute of Astrophysics and Geophysics, Li?ge University, Belgium .. ...

The VLTI Calibrator Selector Tool is a tool intended to assist in the selection of suitable interferometric calibrators for VLTI observations with MIDI and AMBER. It uses a model of the VLTI and its instruments to assess the fringe visibility, given the observed bandpass, the geometry, spectrum, and coordinates of the target and the time at which the observations are to be made. ... The tool offers an HTML/Java based interface and consists of two pages. ... The quality flag depends on LDD_chi2. ...

... The file names' construction . The flight (m) stage's file set . ... the orbital data used for the flight operation monthly (m) long-term planning, . ... The orbital calculations are based on the initial orbital data determined by KIAM RAN using the orbital radio- measurement treatment. The determined initial orbital data are presented as a state vector (satellite position and velocity) in the J2000 reference. ... Accept the file with extension '.bgr', where the Moscow time (MT=UT+3h) is used. ...

... Directives | ... Apache HTTP Server Version 2.2 . ... This module controls the setting of the Expires HTTP header and the max-age directive of the Cache-Control HTTP header in server responses. The expiration date can set to be relative to either the time the source file was last modified, or to the time of the client access. ... access . ... If set to On , the headers will be added to served documents according to the criteria defined by the ExpiresByType and ExpiresDefault directives ( q.v. ). ...

THE NAUTICAL ASTRONOMICAL ALMANAC for 2015-2016 (in Russian-English) . Preface . The Institute of Applied Astronomy of the RAS (IAA RAS) submits the next issue of ?The Nautical Astronomical Almanac for the years 2015-2016? biennial (NAA-2). ... Calculations of ephemerides in NAA-2 for 2015-2016 have been executed by the following researchers of Laboratory of Astronomical Yearbooks of IAA RAS: . ... The Explanation for NAA-2 (2015-2016) is revised by M.V.Lukashova, M.L.Sveshnikov. ...

... 110-114 F5.2 mas/year s_mu_ra Error of RA proper motion 116-120 F5.2 mas/year s_mu_dec Error of Decl proper motion 122-122 I1 --- Src Proper motion source (2) 125-129 F5.2 --- Corr PM errors correlation coefficient 133-138 F6.2 mas Pi HIPPARCOS parallax 140-144 F4.2 mas Pi_err Parallax error 147-152 I6 --- Hip_no HIPPARCOS number ------------------------------------------------------------------------------- Note (1) Sources of radial velocity data: 1 Moscow group measurements (Sov.Astron.Let., ...

... Atlantis to Orbit . ... Pictured above , the Space Shuttle Atlantis lifted off to visit the International Space Station during the early morning hours of July 12. ... Publications with keywords: atlantis - space shuttle Atlantis - ISS - international space station . Publications with words: atlantis - space shuttle Atlantis - ISS - international space station . ... International Space Station Transits Saturn . ... Assembly of The International Space Station . Earth and Milky Way from Space . ...

It is a matter of common knowledge that in processes of genesis and evolution of many solar phenomena participate magnetic fields of sunspots. ... As a basis for formation of the database we take data on magnetic fields, collected by set of observatories during many years of observations. ... Section "Magnetic field data" contains data of magnetic field observation for separate sunspots, presented in standard text format (ASCII). ... Description of structure of these files is presented here . ...

... DESCRIPTION General Catalog of Variable Stars (GCVS database) . ... Kholopov P.N., Samus N.N., Durlevich O.V., Kazarovets E.V., Kireeva N.N., Tsvetkova T.M., 1990, General Catalogue of Variable Stars, 4rd ed., vol.IV, Nauka, Moscow. Kholopov P.N., Samus N.N., Durlevich O.V., Kazarovets E.V., Kireeva N.N., Tsvetkova T.M., 1992, General Catalogue of Variable Stars, 4rd ed., vol.IV, Bull. ... Kazarovets E.V., Durlevich O.V. Editor-in-Chief Samus N.N., 1998, New Catalogue of Suspected Variable Stars. ...

... Exposure Time Calculator (ETC) . ... ESO - Public Surveys . ... the recommended values to use for DIT, . ... Detector on-chip integration (DIT): seconds. to your chosen value - a separate page gives recommended values to use for DIT - for modes 1 and 2 below you may wish to start with the maximum recommended values as these will minimize the effect of read noise (a total object exposure of Y secs with DIT=X secs will produce Y/X lots of read noise) and give you a lower limit on the time needed. ...