... IAU General Assembly XXVII - Joint Discussion #12 . ... IAU General Assembly XXVII . ... Recent observational and theoretical results show that the period between recombination and the end of the reionization era is very dynamic in terms of star and galaxy formation. ... Formation of the first galaxies . ... Joint Discussion 12 was part of the scientific programme of the XXVII General Assembly of the International Astronomical Union, which took place in Rio de Janeiro, Brazil, August 3-14 2009. ...

Next: About this guide Up: General information Previous: General information Contents . is the original interactive data reduction package developed for the Navy Precision Optical Interferometer at Lowell (NPOI). is an endeavor to combine all aspects of data reduction, modeling, astrometry, and imaging, including a stellar database, with an interactive data language in one package. ... Next: About this guide Up: General information Previous: General information Contents Christian Hummel 2015-04-28 ...

... The generalized aperture program is designed to simulate the effects on the incident photon stream of physical obstructions, such as thermal baffles and pre- and post-collimators. ... The philosophy behind the aperture program is that a geometrically complicated aperture may be modeled by a combination of geometrically simpler apertures. ... The generalized aperture program takes a list of assemblies and apertures created by the front end, and compares each input photon to the apertures, in turn. ...

... The perceptron structure, on the basis of which the database is built, is defined by a number of the input and output parameters and a required accuracy. ... The output perceptron data are the expansion coefficients of the scattering matrix elements in series of the generalized spherical functions. ... As the cluster structure depends on the generation conditions the expansion coefficients were averaged over 5--7 realizations of the clusters (for N . ... is the coefficient number. ...

... This chapter describes the PEPSYS package for general photometric reductions. The function of photometric reductions is to measure and remove, so far as possible, the instrumental signature from the data. ... The package contains two main parts: a planning program and a reduction program. The planning program interacts with the user to find out the goals of the observing program, and then produces a schedule of the observations needed to meet those goals efficiently. ... ASCII source files . ...

... spectrum . ... nsource <n> : choice of source function (def: 3=Feautrier) . noptype <n> : choice of continuous opacity (def: 1=Kiel) . nhedat <nhedat> : choice of HeI data (BCS or Mon treal) (def: 1=BCS) . ... read_model <filename>: read model atmosphere in QUB/STERNE2 format . ... wavmax <w_max> : distance from line centre to compute . ... nvturb <n vt > : number of points in -dependent v turb . ... tau_exp <n> : increase resolution of optical depth scale by adding additional points . ...

... Archives . ... In order to understand a learning procedure statistically it is necessary to identify two important aspects: its structural model and its error model. ... Without verification, I saw too often times that simple Gaussian error models are almost always adopted in astronomy. ... Additional but small efforts of the statistically apprehensible quantification of astronomical structure models and associated errors would lead cornucopia of error models beyond simple Gaussian error model. ...

Next: Input Parameters to the Up: Frequency Handling Previous: Multi-Plane Models . When using multi-frequency techniques for continuum work ( i.e. specifying options=mfs to invert ), the model will generally consist of a single plane (if derived from clean or maxen ) or an intensity plane and flux scaled derivative plane ( mfclean ). In these cases, the self-calibration tasks can generate the model for all needed frequencies. ...

General Forum Message . Forums: . ... Discussion Forums | ... Jason Deep Space Series Model 518s . Forum List | ... Post Message | ... I have a 518s deep space reflector telescope 675 x 4.5" and want to know how much are they going for because i thinking about selling it? ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

STEP INTO THE BLUE - MEADE INSTRUMENTS PRODUCT GUIDE . ... LX850 Series . ... Coronado Accessories . ... Power Supplies and Adapters . ... General Accessories . ... Meade 2" Accessory Adapter for Meade ACF and SCT models . ... Meade 2" Accessory Adapter #07085 for Meade ACF, SCT, and LS models. Converts the rear cell thread of the telescope to a 2" slip fit, allowing use of 2" accessories such as 2" slip fit diagonals and 2" eyepieces on Meade LX90 and LX200 models of all years and sizes. ...

... epchain (epchain-8.60.1) [?? ... The epchain task chains and loops over all first-level EPIC PN tasks to produce an event list ready to be exported as a PPS product. The epchain script is executed with a number of command line input parameters (arguments to the script). ... Input files corresponding to the specified readout mode, CCD and exposure number are searched for in the given ODF directory. ... Badpixfind files (created by badpixfind and to be used by badpix ) will be placed in badpixset . ...

Applying Bayesian analysis to polarisation data J. Geisbuesch ( Cambridge ) Bayesian analysis of polarisation data LOFAR MKSP Workshop 1 / 15 Outline 1 2 3 4 Polarisation simulations @ radio wavebands Bayesian analysis Analysis of polarisation data Conclusions J. Geisbuesch ( Cambridge ) Bayesian analysis of polarisation data LOFAR ...

... We find a transition of LBV star from the LBV instability strip to the region of classical WN for the first time. ... Numerical modeling of the atmospheres of these objects are very important for understanding the evolutionary relationship WR and LBV stars, as well as of the physical causes of LBVs variability. We studied spectra of two very luminous stars in the M33 galaxy - LBV V532 and late WN star FSZ35. ... Bottom: The spectrum of FSZ35 with the final model . ...

... The general scientific activity of the stuff is not a static phenomena, but mainly it lies in the direction, reflected in the famouse book by Ya.B.Zeldovich and I.D.Novikov "Relativistic Astrophysics". ... They can be separated into three main branches: "discology" (prof. N.I.Shakura, N. Ketsaris and grad.student G.V. Lipunova); astrophysics of neutron stars, evolution of close binaries and related problems (prof. V.M.Lipunov , prof. K.A.Postnov , drs. ...

... The method is based on construction of a general polyharmonic model of the variations of the Earth rotation parameters using all the data available for the last 80 100 years, and modified autoregression technique. In this presentation, a detailed comparison was made of real-time UT1 predictions computed making use of this method in 2006 2010 with simultaneous predictions computed at the International Earth Rotation and Reference Systems Service (IERS). ...

The multiscale analysis of heterogeneous structures is actually an important and effective tool of mathematical modeling in physics, technique and biology. ... The special year will extend the existing cooperation between French and Russian researchers in the multiscale analysis and in mathematical modeling in hemodynamics, taking into consideration the mass transport, coagulation, fluid-structure interaction and other aspects. ...

... Gas in Thermodynamic Equilibrium Conditions. Stellar Spectrums. Physical Basis of Spectral Classification of Stars. ... The Sun. General Stellar Feature of the Sun. ... Distribution of Brightness in Solar Disc. ... Chromosphere - Observations on Limb and Disc of the Sun, Basic Elements of Structure, Spectrum, Physical State. ... Solar Corona - Observation, Structure, Spectrum, Polarization, Dynamics, Rotation, Physical Condition. ... Interstellar Dust. ... Two Groups of Big Planets. ...

... Tte tables of ionosphere and plasmasphere parameters are contained in a file param.tbl. ... Latitude Longitude Numbers of tables for (degree) (degree) Month Wm=10 Wm=100 Wm= 150 80 30 March 1 - 3 397-399 793-795 80 150 March 4 - 6 400-402 796-798 80 270 March 7 - 9 403-405 799-801 60 30 March 10 - 12 406-408 802-804 60 150 March 13 - 15 409-411 805-807 60 270 March 16 - 18 412-414 808-810 40 30 March 19 - 21 415-417 811-813 40 150 March 22 - 24 418-420 814-816 40 270 ...

... PUL VLBI Analysis Center . ... Pulkovo EOP and Reference Systems Analysis Center (PERSAC) is located at the Pulkovo Observatory . ... Processing of VLBI , GPS, and optical observations aimed at analysis of the Earth rotation, station displacement, and celestial reference system. ... Celestial Pole Offset (CPO) and Free Core Nutation (FCN) . Four daily updated CPO and FCN series (models) are provided. ... File fcn1.dat contains the ZM1 FCN model with variable amplitude and phase. ...

... This method is based on putting space modules, vehicles and EVA-suit donned cosmonauts in the swimming pool under conditions of neutral buoyancy, indifferent equilibrium and unsupported state. ... You can also dive into the swimming pool with the SCUBA equipment in order to examine the mock-ups of space stations and vehicles and pass a course of rehabilitation in a hyperbaric oxygenation complex. ... Services / Hydrospace: General description Technical description "Orlan" suit Photo gallery Price . ...