Test stand for geometrical calibration of imaging cameras . determination of the elements of internal orientation for imaging cameras as well as the parameters of mutual orientation of the internal and instrument coordinate systems . Test stand for photometric calibration of imaging spectrometric cameras . determination of the spectral and radiance characteristics of the imaging systems . ... Test stand for determining radiation stability of components . ...

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. ...

Next: Advances in Automated Algorithms For Morphological Classification of Galaxies Based on Shape Features . ... Yagi, M. 2003, in ASP Conf. ... I present a method to estimate fourth order cosine coefficient of Fourier harmonics, so called boxiness, from second and fourth order moments in Cartesian coordinate. The method is faster than traditional fitting method about by order and have enough accuracy for objects. ... The error is estimated by applying the code to simulated images. ...

... SPICE System Documentation . Comprehensive set of SPICE System documentation including tutorials, subroutines and data formats descriptions, etc. Other related home pages: . Navigation and Ancillary Information Facility at JPL . MARS-96 Space Mission . ... Please, forward comments and questions about information on this page and all descending NAIF and M96 SPICE implementation pages to NAIF group at IKI . naif@arc.iki.rssi.ru . ...

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Parkes radio telescope . Australia Telescope Compact Array . ... CSIRO, Australia's national science agency, operates a number of world-class radio astronomy observatories that are collectively known as the Australia Telescope National Facility or ATNF. ... CSIRO also manages the Murchison Radio-astronomy Observatory, where the Square Kilometre Array telescope infrastructure in Australia is to be centred. ...

... Let us first find out which way -- rise in spectral resolution with some loss in the S/N ratio or increase in the S/N ratio with a fixed spectral resolution -- is better for the purpose of reduction of equivalent width determination errors. ... N -- number of counts for 1 ? ... line equivalent width, . ... Thus if the spectral resolution is managed to be increased (i.e. to decrease )without loss in the number of counts falling at 1 ?, the equivalent width measurement error is then proportional to . ...

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... Archives . ... Estimating f under ?Sparse Poisson Intensity? condition is an frequently appearing topic in high energy astrophysics data analysis. ... tempt me to study and try their algorithm. ... Algorithms arXiv Astro Bad AstroStat Bayesian CHASC Cross-Cultural Data Processing Fitting Frequentist Galaxies gamma-ray High-Energy Imaging Jargon Job Languages MC MCMC Meta Methods Misc News Nuggets Objects Optical Physics Quotes Spectral Stars Stat Timing Uncertainty X-ray . ... Chandra Blog . ...

... Iowa Robotic Telescope | ... Talon is based on OCAAS, a software suite developed by software engineer Elwood Downey ( Clear Sky Institute ) for use at the University of Iowa ?s first remote facility (the ATF, or Automated Telescope Facility). ... XObservatory : Telescope Control Interface . ... This program calls upon and coordinates much of the interrelated portions of the Talon architecture, and forms the primary control panel for the telescope, dome, and peripheral systems when used locally. ...

Super Rocket Targets . NPO MOLNIYA has been designing rockets-targets for over 30 years using the great experience in crea-ting anti-aircraft guided rockets (AGR) for C-25M. On the basis of B-300 anti-aircraft rockets which expired their service life, there were designed, tested and put into the serial production the following types of the rocket - ... The analogue of this system successfully passed the state tests with the ZVEZDA-4 rocket-target. ...

... Tonight's Sky . ... Observing . ... Sky this Month . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Observing Podcasts . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . Springtime observing for small telescopes . ... Seasonal Observing . ... Observing Basics . ... Subaru Telescope Facility, Hilo, Hawaii . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

... 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 . ...

... Subject and Problems of Stellar Astronomy. ... Plane of Galaxy, Methods of Its Location Determination. ... Stars Distances. ... Other Methods of Stars Distances Determination. ... Tangential Velocities, Their Determination by Self-Motions. ... Determination of Solar Apex and Spatial Velocity by Radial and Spatial Velocities of Stars. ... Features of Orientation and Parameters of Peculiar Stellar Velocities Ellipsoid. ... General and Selective Light Absorption in Galaxy. ... Darc Clouds in Galaxy. ...

Russian SHAREABLE DATA CENTER Institute of Solar-Terrestial Physics SB RAS . ... The algorithm and appropriate program for decametric radiosignal propagation conditions prediction for paths from 500 to 9000 km have been developed at ISTP SB on the basis of normal wave method (AltyntsevaB.I,Iliyin N.V., Kurkin V.I. and others //Decameters channel simulation on the base of normal wave method . ... Solar activity indices are chosen automatically from the prediction date from the database . ...

University Satellites and . Space Science Education . ... Accurate Satellite Trajectory Determination Using IGS Precise Ephemeris . ... International Global Navigation Satellite Systems Service (IGS) let users of satellite navigation systems free access to the information of rather precise coordinates of every satellite in Greenwich coordinate system with two week delay. ... As a result of applying this algorithm the trajectory of every satellite was defined as precise as IGS data. ...

Report of the RadioAstron International Science Council meeting of June 18-20, 2012 The RISC congratulated Nicolai Kardashev and the entire Astro Space Center team for their leadership and determination over more than 30 years resulting in the successful launch of RadioAstron and the magnificent early interferometer results in all four frequency bands. ... Recommendations The RISC advised the ASC to develop an Open Skies phase of RadioAstron research beginning mid 2013. ...

Atmospheric influence on the different radio-engineering system functioning . ESTIMATION OF ATMOSPHERIC OPTICAL CHARACTERISTICS AND REMOTELY SANSED IMAGE CORRECTION . ... Direct transmittance estimation results for 12 channels of the spectrometer CHRIS. ... We have managed to develop a direct method of estimating the discrete Normalized Atmospheric Point Spread Function (NAPSF) from available images alone, not using any external sources of information about the atmosphere. ... IRE RAS 1996-20 11 ...

... DIAGNOSTICS OF IONOSPHERIC IRREGULARITY SPECTRUM USING MEASUREMENTS OF RADIO WAVE ANOMALOUS ATTENUATION UNDER VERTICAL SOUNDING . ... The selected experimental data are characterized by a high average level of attenuation of a signal of vertical sounding (10 dB and above), which cannot be caused by collisional absorption of radio waves (practically absent in a dark time of day) and, hence, being a consequence of scattering on random irregularities. ... ATTENUATION OF A VERTICAL SOUNDING SIGNAL . ...

UPDATE - June 1, 2007 . ... A successfull MERLIN proposal for "Co-ordinated studies of the solar minimum solar wind" has been advanced by Andy Breen (PI, with the participation of G. Dorrian, R. Fallows, G. Poletto, M. Bisi, P. Thomasson, R. Beswick): this means that scintillation measurements will be made on 12, 14, 15 and 17 May, 2007. ... 2007/05/12 . ... MERLIN . ... 0323+055 . ... EISCAT/ESR/MERLIN . ... 0321+123 . ... EISCAT/MERLIN . ...

Estimations of dome seeng by results of optics quality tests with Shack-Hartman wavefront sensor. ... Measurements on AZT-22 Telescope diameter: 1000 mm F/7.7 Effective subaperture: 37.5 mm Exposure time: 100 ms Time between exposures: 5 s Individual image with tilts in X direction AZT-22 tower The spatial spectrum evolution (top) and wind direction in measurements processes . AZT-22. ... ZTSH dome Zeiss-1000 dome The spatial spectrum evolution (up) end wind direction through time. ...