The neutral hydrogen in dust cloud . ... The intensity of line emission of neutral hydrogen (HI) is proportional to concentration of gas and is inverse proportional its temperature.Therefore the reduction of intensity emission of HI in dust clouds could not be interpeted simple. It has been observed the decreasing of HI line absorption at radiation frequencies and coordinates of the dense dust cloud which covered the most part of NGC 6618 nebula (figures 1 and 2). ...

... Tonight's Sky . ... The Magazine . News . Observing . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Open cluster NGC 2818, spiral galaxy NGC 2964, and spiral galaxy NGC 2976 . ... Astronomy for Kids . ... emission nebulae . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine . ...

... The European HST Archive has been moved to ESA's European Space Astronomy Centre ( ESAC ), Spain, where most of ESA's Space Science Archives are located and operated from. ... The Space Telescope European Coordinating Facility (ST-ECF), jointly operated by ESA and the European Southern Observatory ( ESO ) was, until the end of 2010, the European HST science facility, supporting the European astronomy community in exploiting the research opportunities provided by the Hubble Space Telescope. ...

Next: Analysis Tools for Nebular Emission Lines . ... Extracting spectra from a large number of NICMOS grism images requires a convenient interactive tool which allows a user to manipulate direct/grism image pairs. ... The direct image is used to locate objects of interest, to find the position of the appropriate spectra in the grism image, to determine the optimal extraction technique to use, and to calibrate the wavelength range of the extracted spectra. ... Figure 1: The NICMOSlook User Interface . ...

... AstroCC is a coordinate conversion utility for astronomy. It accepts an object designation or the coordinates of an object and calculates coordinates in alternative systems, and at different dates, times, and locations. It also provides lunar and bright planet coordinates to aid in planning observations. ... BJD values may also be retrieved from http://astroutils.astronomy.ohio-state.edu/time/utc2bjd.html which is based on Eastman et al. ... Coordinate data are obtained from SIMBAD. ...

We estimate the conversion factor relating CO emission to H2 mass, ЮБCO, in five Local Group galaxies that span approximately an order of magnitude in metallicityт?? ... We model the dust mass along the line of sight from infrared (IR) emission and then solve for the ЮБCO that best allows a single gas-to-dust ratio (ЮДGDR) to describe each system. ... These results are consistent with the conversion factor becoming a strong function of metallicity around 12 + log (O/H) ~ 8.4-8.2. ...

Next: Time coordinate system (TIMCOORD) Up: Coordinate Definitions used by Previous: Coordinate Definitions used by Contents . The CAL makes use of the following spatial coordinate systems . PIXCOORD0: Telemetry-related CCD pixel coordinate system . ... PIXCOORD1: Node-oriented CCD pixel coordinate system . ... The pixel coordinate system is, thus, node-oriented . ... CAMCOORD1/CAMCOORD2: Camera reference systems . ... Camera unit(s) . alignment of CAMCOORD1/2 axes in PIXCOORD1 frame . ...

... Radiation mechanisms of astrophysical objects: classics today . ... Saint-Petersburg is the 2n d largest city in Russia located on the Neva River at the head of the Gulf of Finland on the Baltic Sea. Founded in 1703 by Tsar Peter the Great Saint Petersburg was the imperial capital of Russia until 1918. The meeting will be held in the Conference Hall of historical building of the Saint-Petersburg State University - Twelve Collegia. ... Conference program . ... Conference location . ...

The GIPSY coordinate system is implemented in terms of a collection of mostly FITS-compatible GDS descriptor items. ... The axis name is uniquely related to the physical coordinates of the pixels along the axis. ... For this position the physical coordinate is precisely defined in CRVAL i , and therefore we call this position the projection centre. ... The GIPSY coordinate system also recognizes secondary axis descriptors, which relate grid positions to a different type of physical units. ...

. RTT150 . Russian-Turkish 1.5-m Telescope . (C) Copyright . HEAD IKI . Telescope is installed at the TUBITAK National Observatory (TUG) under the administration of Scientific and Technical Research Council of Turkey. It is located approximately 50 km to the north from Antalya in the south of Turkey on the Bakyrlytepe mountain. Latitude: j = 36 o 49' 30'' North . Longitude: l = 30 o 20' East . Elevation: 2550 m . Time zone: +2 hours .

Irregular phenomena in the Earth Pole oscillation process and temporal variations of geopotential Valery Bondarenko, Vadim Perepelkin s The observed irregular phenomena in the Earth Pole oscillation process are very variety. ... These phenomena indicated in the IERS data are the "abnormal" fluctuation of the Earth Pole coordinates which owing to changing of the geodynamical parameters gives negative result in interpolation and forecast of the first approximation mathematical model. ... Fig. ...

The punta salinas radar is run by the 140 ADS (air defense squadron) of prang (puerto rican air national guard). ... Punta Salinas radar specs . ... Punta salinas ModeA,modeB,modeC definitions . ... apr15 : punta salinas upgrades from 18 to 100 freq channels . ... 12dec13: punta salinas blanking sector changes from 78 degrees to 22 degrees in around jun12 . 26nov13: check the duration of the punta salinas blanking (in the AO direction). 02nov11: puntasalinas creates intermods in alfa . ... freq# . ...

The sections <Directory> , <Location> and <Files> can contain directives which only apply to specified directories, URLs or files respectively. Also htaccess files can be used inside a directory to apply directives to that directory. ... The order of merging is: . ... If multiple <Directory> sections apply to the same directory they are processed in the configuration file order. ... Using the options in question is only possible inside a <Directory> section (or a .htaccess file). ...

T he Siding Spring Survey (SSS) is a Near-Earth Object search program that utilises the 0.5-m Uppsala Schmidt Telescope at Siding Spring Observatory, N.S.W., Australia. ... The mission of the Siding Spring Survey is to contribute to the inventory of near-earth objects (NEOs), or more specifically, the potentially hazardous asteroids (PHAs) and comets (PHOs) that may pose a threat of impact and thus harm to civilization. ... Based on the CSS Mission page . ... Siding Spring Survey Main Page . ...

... 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. ...

... The spatially resolved structure near the hydrogen emission H line was found in the spectrum taken with the BTA/SCORPIO in June, 2013. ... The fragment of the Nova V1494 Aql spectrum is shown in Fig.1. ... The Nova V1494 Aql has passed the stage of the supersoft X-ray source (SSS) in the period between 218 and 516 days after the visible light maximum (Schwarz et al., ... The spectrum of Nova V1494 Aql taken on 2013 June 9 with BTA/SCORPIO . ... The vertical lines are the lines of night sky emission....

This is a preliminary version of a document which will hopefully evolve into a useful SCIENCE HELP page. This is meant to be an easily accessed directory of science software and data products which are available in the high energy division, primarily those which are maintained by "volunteer" scientists. ... The idea is to make this a cooperative venture - this document can be edited by anyone on the HEAD network (/proj/qedros2/QEDT/www/Science_guide/science_guide.html). ... LOCATION: /soft/ciao . ...

... In addition, IZMIRAN comprises the St.Petersburg branch and magnetic ionospheric observatory in Kaliningrad. The history of IZMIRAN is largely that of investigating magnetic storms and sub-storms on the Earth surface, in circum-terrestrial and interplanetary space, initially by means of a network of ground stations of the Soviet Union (1930s - 1940s) and the nonmagnetic skunner "Zarja", then through the extensive use of magnetic measurements on artificial Earth satellites and automatic stations. ...

Stellarium 0.12.3 . ... ClassљList . ... StelLocationMgr Class Reference . Manage the list of available location. ... locationForString (const QString &s, bool *ok=NULL) const . ... Get whether a location can be permanently added to the list of user locations The main constraint is that the small string must be unique. bool StelLocationMgr::deleteUserLocation . ... Return the StelLocation for a given string Can match location name, or coordinates. bool StelLocationMgr::saveUserLocation . ...

... Proposed location of the new generation Russian VLBI network radio telescopes Kaliningrad St. Petersburg Zelenchukskaya (Zc) Badary (Bd) Ussurijsk Working frequency bands for the new generation Russian VLBI network S X Ka 2.2 2.6 7.0 9.5 27 33 F, GHz Data acquisition parameters 4 frequency bands : 512 MHz bandwidth x 2 polarisations or 1024 MHz bandwidth x 1 polarisation 2-bit sampling ...