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 . ...

QC1 Database User's Guide: . general . ... QC1 browser . ... QC1 database: User's guide . This is the User's guide for the interfaces to the QC1 Database maintained by QC Garching. ... an interface for browsing the content of a QC1 database table . an interface for plotting the content of a QC1 database table. They all connect to the QC1 database containing Quality Control information about the VLT instruments. ... The QC1 database contains a set of tables per instrument. ... table . ...

... 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. ...

The following general subroutines belong to the category GDS: . ... Close set. ( gdsd_basic.c ) . ... Returns the Floating point type of a set. ( gdsd_basic.c ) . ... Obtain a GDS set handle. ( gdsd_basic.c ) . ... Returns the number of descriptor items present in a set. ( gdsd_basic.c ) . ... See GDSD_Rxxx ( gdsd_wfits.shl ) . ... Read GDS descriptor item. ( gdsd_basic.c ) . ... Set current read position at beginning of descriptor item. ( gdsd_basic.c ) . ... Write descriptor item. ( gdsd_basic.c ) . ...

... 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. ...

Next: Photometry Up: Regions and Source Parameters Previous: *imcnts* - Find counts . This task (developed for use with optical images, but also useful with x-ray data) will quickly compute location, size, ellipticity, and position angle of sources. ... User can generate contour plots of any portion of the image and count rates in slices through the image. The program is advertised as ``quick [optical] photometry''. input file: rp110590_im1.imh . output file: logfile . ... Photometry . ...

General Forum Message . Forums: . ... Post . ... Telescope Types . ... Many types exist, but a good 8 inch Newtonian on a simple Dobsonian mount provides great views in a simple package. ... While the SCT is not my favorite design for the type of astronomy I pursue, I do think it is the right kind of telescope for the average consumer. ... www.astronomy.net . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... 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. ...

... 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. ...

. ОГЛАВЛЕНИЕ . Предисловие к четвертому изданию . Введение . § 1. Предмет и задачи астрономии . § 2. Подразделение астрономии . § 3. Возникновение и основные этапы развития астрономии . § 4. Практическое и идеологическое значение астрономии . § 5. Основа и источник астрономических исследований . § 6. Краткий очерк строения Вселенной . Глава I . Основные сведения из сферической астрономии . § 7. Видимые положения светил. Созвездия . § 8. Видимые движения звезд, Солнца, Луны и планет . § 9. Географические