... In principle, two observers on the ground can tell, by comparing the position of the same auroral arc against the background stars. ... The display stretches across Canada; just below it, in the middle of the picture, are the lights of Chicago, next to Lake Michigan. ... The Canadian scientific satellite Isis-2 (1971) carried an auroral imaging camera and discovered the diffuse aurora, a broad ribbon around the auroral oval, too spread-out to be noticed from the ground. ... Auroral Acceleration . ...

Next: NICMOS Science Up: NICMOS Data Calibration and Previous: NICMOS Software at the . ... Reference File Tools . Image Analysis and Reduction . ... These include the tasks used in the STScI pipeline, tools to generate the reference files used by the calibration pipeline tasks, and general image analysis, manipulation, and arithmetic tasks. ... Calnica is used to apply instrumental calibrations to individual datasets, while calnicb is used to process associated sets of NICMOS images. ...

... Exposure Time Calculator (ETC) . Survey processing . ... VISTA is a 4-m class wide field survey telescope for the southern hemisphere, equipped with a near infrared camera (1.65 degree diameter field of view at VISTA's nominal pixel size) containing 67 million pixels of mean size 0.34 arcsec and available broad band filters at Z,Y,J,H,K s and a narrow band filter at 1.18 micron. A wide field visible camera, if constructed, could also be used on VISTA. ... Tile . ... ESO VISTA Public Surveys . ...

National Aeronautics and Space Administration . ... Bruce McCandless II (Captain, USN, Ret.) NASA Astronaut (former) . ... He was a member of the astronaut support crew for the Apollo 14 mission and was backup pilot for the first manned Skylab mission (SL-1/SL-2). ... A veteran of two space flights, McCandless has logged over 312 hours in space, including 4 hours of MMU flight time. ... With the completion of this flight McCandless logged 191 hours in space (including 4 hours of MMU flight time). ...

... Drop points . ... Pick ops use the point in a set nearest to the location of the pointer when clicked to select the set for the chosen operation. ... To activate a set, select the set number, specify the number of points in the set and click on "Accept." ... Press the button marked Accept . ... Press the button marked Accept to divide the selected set into (length of selected set) / N sets with the remainder to the last set. ... Press the button marked Accept to merge all sets to the selected set. ...

... Fit the ring around the equator and then change its inclination from 0 degrees (equatorial orbit used by geosynchronous satellites) to 28.5 degrees (space shuttle orbit) to 51.6 degrees (space station orbit) to 90 degrees (polar orbit used by spy satellites). by Rob Landis, Space Telescope Science Institute . ... With so many satellites now in orbit, it is likely that you have seen an artificial satellite zipping across the night sky. ... http://www.amsat.org/amsat/ftpsoft.html . ...

... Tonight's Sky . ... The Magazine . ... Observing . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... Bright planets meet at dusk . ... Astronomy magazine subscribers can read the full article for free. ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter....

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. ...

... Auroral Currents . ... 25c. Space tether . ... Aurora from Space . ... But the best view is still from space. ... The Canadian scientific satellite Isis-2 (1971) carried an auroral imaging camera and discovered the diffuse aurora, a broad ribbon around the auroral oval, too spread-out to be noticed from the ground. ... Currently, NASA's Polar (1996) collects images of the polar aurora using three cameras--in visible light (sometimes as frequently as 12 seconds apart), in ultra-violet and in x-rays. ...

fitshdr_edit - FITS-file headers interactive editor fitshdr_edit [options] FITSfile_name . fitshdr_edit utility allows to modify FITS headers' lines interactively (FITS MultiExtentionsFiles included). fitshdr_edit is just simple shell script around fitshdr utility. ... It means, that You can't remove line from header! ... 560:CRDELT2 = 21.0 / this is example 640: 720:HISTORY header No.0: 1st history line 123456789012345678901234567 880:COMMENT Sat Sep 25 21:17:34 CEST 2004 / by fitshdr_edit . ...

... The sample of the Local Volume galaxies (distance smaller than 10 Mpc) gives a unique opportunity to study the properties of galaxies including the weakest objects: the absolute magnitude M B -10 and the virial mass M vir 10 9 M x263C;. ... Luminosity function of the Local Volume galaxies. ... The luminosity functions for galaxies are presented: red dashed line - from the 2dFGRS survey (Norberg et al. 2002); blue dash-dotted line - from the SDSS survey (Blanton et al. ...

... The change in the temperature dependence of the resistance, R ( T ), of ceramic YBa 2 Cu 3 O 7 - x as oxygen is removed from the sample has been studied. The superconducting transition temperature shifts progressively downward in the process. ... The temperature dependence of the resistivity, ( T ), is linear, with a progressively increasing slope, only at T > 400 K. It is suggested that oxygen condenses on Cu-O chains at T 400 K. PACS: 74.60.Mj, 74.70.Vy, 81.40.Rs, 72.80.Ga ...

As in the last years, the Ephemerides of Minor Planets for 2015 are prepared by the IAA RAS only in the electronic form. ... Orbital elements of all numbered planets have been determined in IAA all over again on the ground of available observations in the catalog of the Minor Planet Center. ... More detailed information on orbital elements used in the present volume of EMP and their accuracy is given in section "Information on new orbital elements". ... a) information on new orbital elements; . ...

Rocket R-1 . ... Launch mass, kg . ... On April 14 1948 the Government Decree has been enacted on the development of the first rocket to be made of domestic materials and derived from missile A-4 (FAU-2). The rocket was designated as R-1 including its ground support equipment. ... Launch site . ... During pre-launch processing of rocket R-1, the processing operations and equipment were little different from those used to process rocket A-4. ... Official WEB-site of S.P.Korolev RSC Energia . ...

... Fitting the observed dependence includes calculations of the polarization cross-sections averaged over particles orientation and size distribution, their normalization and the comparison of obtained dependencies with Serkowski's curve representing observational data for a chosen star. ... Variations of the polarization factors with wavelength are shown in Fig. 16 for homogeneous spheroidal particles with PF orientation. ... The distinction between prolate and oblate spheroids is also clearly seen. ...

Title: A New Model of the Gravitational Lens 0957+561 and a Limit on the Hubble Constant . Authors: Norman A. Grogin , Ramesh Narayan (Harvard Univ.) ... Title: ROSAT/PSPC observation of the distant cluster CL0939+472 . ... Title: Interaction in the Bimodal Galaxy Cluster A3528 . ... Title: Cosmological Implications of Galaxy Cluster Evolution . ... Title: Galaxy Cluster Virial Masses and Omega . ... Matches 201 to 222 from a total of 222 matches for the search pattern galaxy cluster . ...

The 6th INTEGRAL Workshop . The Obscured Universe . Space Research Institute, Moscow, Russia . July 2-8, 2006 . Workshop Information: . ... Travel support . ... SAC/LOC . ... The 6th INTEGRAL (International Gamma-Ray Astrophysics Laboratory) Workshop ``The Obscured Universe'' changed its location announced in the first circular and finally will be held at the Space Research Institute (IKI), Moscow, Russia on July 2-8, 2006 (the working days July 3-7). ... INTEGRAL Workshop LOC) . ...

... CPO AND FCN MODELS COMPARISON In -- -- -- -- -- practice, three CPO and two FCN models are available for user's choice: OPA/ IERS C04 CPO series ( IERS AR 2007 , ftp://hpiers.obspm.fr/ iers /eop/eopc04 05/) NEOS/ IERS CPO series ( IERS AR 2007 , ftp://maia.usno.navy.mil/ser7/) Pulkovo ZM2 CPO series (Malkin 2007 , http://www.gao.spb.ru/english/as/persac/index.htm) OPA/ ... All the CPO and FCN models are results of approximation of CPO time series observed by VLBI. ...

Stellarium 0.12.3 . ... Classes . ... StelGui Class Reference . Main class for the GUI based on QGraphicView. ... voidљ . setFlagShowFlipButtons (bool b) . ... getAutoHideHorizontalButtonBar () const . Get the auto-hide status of the horizontal toolbar. ... virtual voidљ . ... virtual void StelGui::forceRefreshGui . ... Get the button bar of the left of the screen. virtual void StelGui::init . ... returns true if the gui has complted init process. virtual bool StelGui::isCurrentlyUsed . ...

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 . ...