... Huchtmeier Richter A catalog of all published HI observations of external galaxies has been compiled. ... the morphological type (internally coded in a crude 1-byte code based on the system of the RC2 Second Reference Catalog of Bright Galaxies (de Vaucouleurs et al, 1976)) in column 4; . the inclination i (in degrees) used by the authors in column 5. ... A General Catalog of HI Observations of External Galaxies by W.K. Huchtmeier O.-G. Richter, H.D. Bohnenstengel and M.Hauschildt May 1983. ...

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 . ...

... Department of Electrical Engineering, Auburn University, Auburn, AL 36849-5201 . This paper presents a criterion for stopping non-linear iterative algorithms, specifically the Richardson-Lucy algorithm that is widely used to restore images from the Hubble Space Telescope. The criterion is based on generalized cross-validation and is also computed iteratively. ... The Randomized Generalized Cross Validation (RGCV) Criterion . ... Using the RGCV Criterion as a Stopping Rule . ... Caveat . ...

... omdetect (omdetect-5.14.2) [?? Meta Index / Home Page / Algorithm Omdetect will find sources on an image using both a peak-finding and connected-pixel algorithm. The former will mainly detect ``point'' sources and the latter ``extended'' sources. The peak-finding algorithm is used first to try to locate all point sources, in order of decreasing brightness. This algorithm mainly overcomes problems with modular-8 patterns around bright sources and scattered light features. ...

... Science Users Information > Science and Technical Meetings > Conferences 2009 > Special Session 1 IAU General Assembly, Rio de Janeiro, Aug 3rd-6th, 2009 . ... Observing with ESO Telescopes . ... ESO-MIDAS . ... ESO Data . ... ESO HST Image Galleries . ... ESO Data Access Policy . ... ESO Science Newsletter . ... will take place as a Special Session of the IAU General Assembly 2009 . ... Registration for the meeting is through the IAU General Assembly and their registration server . ...

... Astro Space Center, Profsojuznaya 84/32, GSP-7, 117997, Moscow, Russia . ... The algorithm allows to work easily with the first and the second derivatives of a visibility function phases and amplitudes. This approach is important for high orbiting Space VLBI data processing. ... where is a measurements of the visibility function and is an approximating function. ... If is a 2-D complex function (a model), the bi-orthogonal approximation is known in VLBI as a self-calibration algorithm. ...

... The draft classification (version August 9, 2006) for new GCVS versions . IAU XXVIth General Assembly, . ... Along with the "+" sign (coexistence of two types), it is suggested to introduce the "|" sign (meaning "or") – for classification options for the same object, e.g. EC|Ell, EC|RR. Pulsating variables . Present: . ... L, Lb (for red stars) . ... Eruptive variables . ... Move to rotating variables . ... ACV, SXARI . ACV . ... Cataclysmic variables and other stars with outbursts . ...

The following general subroutines belong to the category CONVOLUTION: . ... Determine parameters of 2d-gaussian needed to convolve 'oldbeam' to 'newbeam' ( convpars.shl ) . ... Fill array with values of (rotated) 2-d Gauss ( fillgauss2d.c ) . ... Calculate convolution function parameters for use in smoothing to a bigger (rotated) beam and determine scale factor to be able to preserve definition of brightness temperature. ( presmooth.shl ) . ...

... 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. ...

4th General Meeting of Euro-Asian Astronomical Society . ... Astronomy in Moscow and Moscow Area: Past, Present, Prospective ------------------- Main Program of the EAAS 4th General Meeting Saturday, Nov.22 16:30 Sectional sessions : - Stars ------------------- Monday, Nov.24 10:00 Registration EAAS Council Board Meeting 15:00 Official opening of the Meeting ------------------- Tuesday, Nov.25 10:00 Discussion of the Council Board Report 16:30 sectional sessions : - Panel ...