Method for High-accuracy Determinations of Orbits of Small Bodies from Three Observations . ... A new method is suggested for finding the preliminary orbit of a small celestial body from three pairs of angular measurements of its position at three moments. ... The methodical error of orbit computation by the proposed method is generally three orders smaller than the corresponding error of the traditional approach based on the construction of the unperturbed Keplerian orbit . ...

A computer controlled low light photometer for nightglow observations. Hardware units of portable photometer for low light measurements, especially night glow emission is described. ... Interface card contain three channels of 24 bit counter, 4 channels of 12 bit ADC and the buffer bus for the controlled motors of the altazimuthal fork mounting and filters wheel, the position encoders. ... Where N( ) is output signal photometer generated input light flux F( l ) . ... PMT # . 599 . ...

... ATNF Home . About ATNF . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . ... Mopra radio telescope . ... Information & tools for observers . Applying for observing time . ... Observing schedules . ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... Try and find the Moon in the sky once a day over a month*. ... Lunar observations . ... Wildflowers Home . Activities . ...

ON THE IMPACT OF THE GALACTIC ABERRATION ON VLBI-DERIVED PRECESSION MODEL Z.M. MALKIN Pulkovo Observatory Pulkovskoe Ch. ... Corrections to adopted precession rate are usually computed from the linear trends in long-term time series of celestial pole offset (CPO), which are the differences between the measured and the theoretical coordinates of the celestial pole. ... CONCLUSIONS We have estimated the impact of GA on parameters of precession-nutation model derived from VLBI observations. ...

... int abs ( int n) - Get absolute value of an integer . double acos( double x) - Compute arc cosine of x. double asin( double x) - Compute arc sine of x. double atan( double x) - Compute arc tangent of x. double atan2( double y, double x) - Compute arc tangent of y/x. double ceil( double x) - Get smallest integral value that exceeds x ...

... A further spin off of this project is that more reliable pointing information for all exposures is provided. In 1995 the ST-ECF introduced, along with the CADC, the re-calibration on-the-fly (OTF) of archived HST exposures. ... By correlating the HST Mission Schedule and the time-tagged engineering telemetry data stream downloaded from HST it is possible to reconstruct with great accuracy the pointing sequence of any given scientific observation. ... taken within the same HST visit . ...

... A consistent theory of turbulence has not been constructed as yet (this problem is linked with one of the one million dollar problems of the Clay Mathematics Institute), and therefore researchers all over the world rely on computer simulations to understand the underlying physics and processes in star forming environments. As computer power grows our simulations become more and more realistic, allowing us to include a lot of interesting and potentially vital physics into our models.  ...

... Soon it?ll not be qualified for [MADS] because I saw some abstracts with the phrase, compressed sensing from arxiv.org. ... Title: Compressed sensing imaging techniques for radio interferometry . ... The theory of compressed sensing demonstrates that such measurements may actually suffice for accurate reconstruction of sparse or compressible signals. ... Tags: compressed sensing , ill-posed , image reconstruction , interferometry , inverse problem , MADS , Nyquist-Shannon sampling theorem . ...

... During all period of our investigations Dr. N.Sumzina from the Institute of Applied Astronomy of RAS had prepared the Numbered Minor Planet positions from MPC Database for our processing with kind permission of the Director of Minor Planet Center Prof. Braian Marsden. ... Our extensive processing of the MPC data allows us to conclude that CCD observations of the Numbered and Unnumbered Minor Planets have the errors, sometimes very crude. ...

... Prof. G.A. Mikhailov, corr.-member of the Russian Academy of Science . ... Prof. B.A. Kargin . ... Marchuk G.I., Mikhailov G.A., Kargin B.A. et al. 1980) The Monte Carlo Methods in Atmospheric Optics. ... Mikhailov G.A. (1992) Optimization of Weighted Monte Carlo Methods. ... Mikhailov G.A. (1998) New approach to constructing and substantiating weight "path estimates" in Monte Carlo method. ... Optics of Atmosphere and Ocean , v.12, p.238-245. ...

.

Next: GOCG Post-Observation Products . ... Reconstructed Orbit . JPL MMNAV Reconstructed Orbit . ... The JPL MMNAV files will be made available on the JPL MMNAV FTP site in directory [RAstron.ODDATA.JPLICV.TRACK] (note the capital letters). back to top . ... What: X-band Doppler tracking data will be transmitted in near real-time from the DSN GTS to the JPL MMNAV team and from the Pushchino GTS to the ASC navigation team, and post-pass (via FTP) from the GBTS to the JPL MMNAV team. ...

Hubble Telescope Maps Pluto . ... Credit Copyright: A. Stern ( SwRI ), M. Buie ( Lowell Observatory ), NASA , ESA , Explanation: No spacecraft from Earth has yet explored Pluto but astronomers have found ways of mapping its surface . A stunning map of this distant, diminutive planet , the first based on direct images, was revealed late last week in a Hubble Space Telescope press release . ... The map is based on Hubble images made when Pluto was a mere 3 billion miles distant. ...

The information path to prepare, perform and reduce a radioastronomical observation, using the Arcos correlator , is schematized in the figure: . The programs reside part on the computer network of the Arcetri Observatory, and part at the Medicina Radio Telescope . All programs running at Arcetri are written for a Sun workstation, and are public domain software, available upon request. Programs running at the telescope are written for a PC with DOS/Windows (or Linux).

... In a report on a recent information technology conference at Columbia University (Chronicle of Higher Education, 16 January 1998, p. A25), questions are raised with respect to the efficacy of computers in the classroom. ... The Summer Science Program is once again being held at The Thacher School in Ojai, California. ... The Consortium for Undergraduate Research and Education in Astronomy announces the Mount Wilson Summer Program for Undergraduates, August 12-25, 1998. ...

... Contacts . 2009: . ... We finalized the development of a facility for observations (including remote observations) of the star-shaped objects with the temporal resolution of 1 micro second. ... For contacts: G.M.Beskin ) . RATAN-600 Multi-Octave Frequency Range Overlapping Finalized. We finalized the multi-octave overlapping of the RATAN-600 frequency range from 0.75 to 18GHz with the frequency resolution of 1% using the parallel spectrum analysing complex. ... Archive . ...

. Next: Phase unwrapping Up: Pipeline Previous: Flag tables Contents . As usual, bias correction is based in incoherent scans and is performed separately for each interferometer configuration. First, bias correction fit coefficients are computed combining all observations (for each configuration) to make sure that a basic correction is performed. Second, bias corrections are updated for each star with the measurement obtained for this star only. Christian Hummel 2015-04-28

Twilight observations with MASS/DIMM B. Safonov Sternberg Astronomical Institute Moscow State University Comprehensive Characterization of Astronomical Sites, 2010 B. Safonov (Moscow State University) Twilight observations with MASS/DIMM SITE 2010 1 / 17 Why observe in twilight with MASS/DIMM? ... ASM includes 3 devices sensitive to background: guider, DIMM and MASS. B. Safonov (Moscow State University) Twilight observations with MASS/DIMM SITE 2010 2 / 17 Background in guider. ...

This document explains values, tables and other matters on solar physics computing pages. ... is040423.ete : SAHA-S tables, interpolation values: T, rho, X. Z is fixed at 0.02. See reference above. opal2005.etf : OPAL EOS, interpolation values: T, rho, X, Z. Downloaded from OPAL site , marked there as "2005", seems to be unpublished. opal2001.etf : OPAL EOS, interpolation values: T, rho, X, Z. Rogers F.J., Nayfonov A. Astrophys. ... The following values can be calculated: . ... dimensionless . ...

... Dr. Ravil Nazirov is the head of the workshop, and Andrew Ananjev is the secretary of the workshop. ... The workshop is used to be held in the last decade of the month, preferably on Tuesdays. ... The next session will take place October 29, 1996 . ... There is "CONPAS" mailing list which you can join to discuss issues of problem solving and to be automatically notified of important dates and decisions with respect to the coming sessions. ... Secretary of the Workshop: Andrew Ananjev . ...