... Bad Astronomy . ... Mad Science . ... How fast must an object be travelling so the sound I perceive as it directly passes me will drop in pitch exactly one octave? ... When an object is moving past another object, any sound emitted by the first object is changed in pitch due to the relative motion. ... wl(emitted)" is the wavelength of sound emitted by the object at rest, "wl(heard)" is the wavelength you hear from the object, "v" is the velocity of the object, and "c" is the speed of sound. ...

In order to assist folks upgrading we are now going to maintain a document describing information critical to existing Apache users. Note that it only lists differences between recent major releases, so for example, folks using Apache 1.1 or earlier will have to figure out what changed up to Apache 1.2 before this document can be considered relevant. Old users could look at the src/CHANGES file which tracks code changes. ... There have been numerous changes to the default config files. ...

Database Development for Solar System Small Bodies' Orbital Evolution Based on Modern Mathematical Models and Methods . ... Research of the orbital evolution of 6163 asteroids belonging to Apollo, Amor, Aten groups and 197 short-period comets was performed for the time period from 1800 to 2206. 815 objects have been identified among asteroids approaching closely to inner planets, in particular 612 objects passing through the Earth's sphere of action. ...

Journal of Crystal Growth 191 (1998) 520 -- 524 Growth of sapphire core-doped fibers V.N. Kurlov*, S.N. Rossolenko, S.V. Belenko Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow District 142432, Russian Federation Received 4 October 1997; accepted 20 January 1998 Abstract Single-crystal sapphire core-doped fibers (Al O --Al O :Ti>) have been grown by modified EFG/Stepanov method using automated weight control. ... Fig. 1 is a schematic of the growth apparatus. ...

Stellarium 0.12.3 . ... Classes . ... ClassљList . ... SatellitesListModel Class Reference . A model encapsulating a satellite list. ... Tell the model that its internal data structure is about to be modified. ... Tell the model that its internal data has been modified. ... The model keeps a pointer to the satellite list, not a copy, so every time that list is modified outside the model (i.e. satellites are added or removed), you need to call beginSatellitesChange() and endSatellitesChange() . ...

Make a copy of your shell start up file before editing it to change environment or shell variables. You can always return to using this copy if you find that the modified file is not working and you are unable to fix the problem. For example: cd cp .profile old_profile ue .profile . The first command changes you to your home directory, where a copy of the file .profile is made in old_profile . ... To revert to using the original .profile you simply copy it back. ...

Next: Special Cases: Supernova Explosion Up: Change of Binary Parameters: Previous: Mass change . The binary separation a changes differently depending on the mass exchange mode. ... If the mass transfer is conservative ( , i.e. const) and one may neglect the redistribution of the intrinsic angular momenta of the components, the total orbital momentum conservation law implies . ... the orbital separation always increases in such systems). ...

... The blue data have been divided through by a stellar blackbody of about 11000K to remove the detector and grating response. ... The red data has been divided by a cool halo giant (having removed the NaD, CaII and H lines) to remove the detector response, the dichroic response, and most of the telluric absorption. A few of the early red data was done with the 1200 line grating but this was changed to the 316 grating to get better coverage and see the red CN bands. ... Mike Bessell 30 March 2007 ...

... The first step is to open and inspect the camera body. ... Notice that there are snap locks on both sides of the camera body, one of which should already be open since it contained the film removed by the developer. To open the camera body, peel back some of the yellow sticker identifying the camera as KODAK on the top and bottom of the camera and unsnap the plastic pieces. ... You should now have four pieces: the front cover, back cover, middle (main camera with lens), and a cylindrical spool. ...

. Trace: . start : volinks . navigation . Main . SAI VO Projects . CAS . Web Services . TODO . AstroSearch . AstroDB . AstroKeywords . VOLinks . Our People . User Space . Sandbox . Help on Wiki search . toolbox . Index Recent changes Backlinks Login . Show page Old revisions . The following pages were changed recently. volinks.txt Last modified: 2007/05/07 18:32 by oleg Back to top . SAI VO | Astronet | SAI MSU | Legal Information .

Hideyuki Saio Simon Jeffery are exploring models for the evolution of stars formed by the merger of two white dwarfs. The attached movie provides a simulation of the major events involved in the merger process. ... An initial binary system consists of two white dwarfs of masses M 1 and M 2 (given) with an orbital period ( P ). ... We adopt a simple expression for the white dwarf radius as a function of mass (in solar units): . ... The merged star evolution is simulated by a quadratic expansion . ...

ARI USEFUL LINKS modified and/or upgraded by YP (Jul 1, 2015) . Astronomy . ... Astronomy related journals . ... Go to TOP . ADS ( UK , US or French site) . Abstracts from the major Astronomy journals. ... Astronomy Picture of the Day . ... Astronomy and Astrophysics (Bertout's site). status of a paper . ... of Stellar Spectra by R.O.Gray and VISUAL atlas (as pdf) . ... A list of Astronomy databases from the well organised canadian site. ... Astronomy jobs.../courses Go to TOP . ...

Общая Астрономическая Конференция > Товары для астрономов > Продукция DeepSky > Продукция www.qhyccd.com . ... аксессуары http://qhyccd.com/en/left/accessories/ . QHY5V http://qhyccd.com/en/left/page3/qhy5-series/ . QHY5L-II color http://qhyccd.com/en/left/page3/qhy5-ii-series/ . QHY5L-II mono http://qhyccd.com/en/left/page3/qhy5-ii-series/ . ... QHY6 http://qhyccd.com/en/left/page4/qhy6-entrylevel/ . колеса фильтров http://qhyccd.com/en/left/qhy-colorwheel/qhycfw1-old-version-/ . ...

Disastrous earthquakes happen 100 to 200 times a year. ... There is a chance that the data of ionospheric plasma observations hold an answer to the latter question. Satellites and ground-based facilities may detect earthquake precursors in the ionosphere a few hours or days before the main shock. ... ULF "Hz"-oscillations have been recorded several hours before the main shock in a narrow magnetic field tube (40...100 km along the satellite trajectory) conjugated with epicenter of the earthquake. ...

... 18-Jan-2010 17:22 . ... Apache/2.2.3 (CentOS) Server at www.wdcb.ru Port 80 ...

Russian SHAREABLE DATA CENTER Institute of Solar-Terrestial Physics SB RAS . ... Although their determination is based on the scattering process model, independent check-ups by rocket experiments have shown their correctness in experimental applications. ... Ionospheric data analysis, especially during strong disturbances, cannot be without some other kinds of diagnostic tools. ... The lack of data has always been a challange in this case. ...

... Make a new empty directory; you'll need about 6 megabytes; . ... Customize "host.html" as described below (optional); . ... Send some mail to me ( billa@znet.com ) with the URL of your new copy so I can update the mirror list; also let me know if you would like to receive email notifications of future updates. ... Several of the mirror sites are using the "mirror" package to keep their copies of TNP up to date automatically instead of waiting for me to send these notices. ... Mirrors .. ...

... Next Routine] [List of Routines] NAME: ADD_HEADER PURPOSE: addition information from FITS-headers MPFS-frames DESCRIPTION: The function computes the total exposure, mean value zenit distance and modified FITS header CALLING SEQUENCE: Result =ADD_HEADER( headers ) CATEGORY: reduction MPFS-data INPUTS: Headers = String array FITS-headers from the MPFS data OUTPUTS: Header = String array containing the header from the FITS file. ... OPTIONAL INPUT KEYWORD PARAMETERS: BEFORE = Keyword string name. ...

... R.A. = 00h55m04s.86, Decl. = -37 41'43".7 . ... Variable star in NGC 1511 . ... Variable star near Pegasus 2001bn IAUC 8624 BV anon 2001bh 7622 K star ugc11635 2001dh 7482 M star ic5374 1999db 7227 QSO anon 1999dc 7227 AGN anon 1999cx 7210 AGN anon 1999cu 7210 AGN anon 1999bs 7141 cat var ugc11093 1998di 6982 dwarf nova anon 1993U 5818 QSO anon 1993V 5818 QSO anon 1992W 5517 M star mcg 8-23-96 1992X 5517 M star mcg 6-32-24 1991ap 5327 QSO anon 1989Z 5162 var ngc4013 1985J 4059 CV ugc6274 ? ...

... The dependence of velocity ellipsoid parameters for various types stars upon theirage was investigated. ... For metal-rich stars ([Fe/H] -0.1) the shape of velocity ellipsoid becomes more spherical with increasing age of the stellar group and it approaches the equilibrium shape. ... По данным uvby -фотометрии, изохронным возрастам и собственным движениям ~3500 F -звезд диска в окрестности 80 пс от Солнца исследованы зависимости параметров эллипсоидов скоростей различных звезд от возраста. ...