... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2002 October 22 . A Small Double Ozone Hole in 2002 . Credit: SVS , TOMS , NASA . Explanation: As expected, the ozone hole near Earth's South Pole is back again this year. ... Ozone is important because it shields us from damaging ultraviolet sunlight. ... About APOD | ... NASA Technical Rep.: ... A service of: LHEA at NASA / GSFC . ...

Next: *.imh and *.qp Extensions Up: IRAF/PROS Files Previous: IRAF Image Arrays . The x-ray data are stored in QPOE files (Quick Position-Ordered Events, *.qp ) rather than image arrays. ... Note that, unlike IRAF images, QPOE files have no associated header file, and are always stored in the current directory, unless explicitly specified otherwise. Non-PROS IRAF tasks can also access QPOE data files in place of image arrays. ... rp110590.qp[pi=2:30] . ... The ROSAT PSPC qp file images are . ...

Next: Scratch Files Up: Miriad Datasets Previous: Listing Datasets - PRTHD . ... A dataset contains several kinds of data, called `items', . Items can be quite small (e.g. a single number), intermediate in size (e.g. the history item, use to store history information), or very large (e.g. the image item in an image dataset, which is used to store the pixel data, or the visdata item in a visibility dataset, which contains the correlations). ...

Stellarium 0.12.3 . ... Classes . ... Scripting . ... Scripting Engine . ... Script Console . ... Since version 0.10.1, Stellarium includes a scripting feature based on the Qt Scripting Engine . ... Prior to version 0.10.0, Stellarium used a different scripting engine called StratoScript . ... Prior to version 0.10.0, Stellarium had a simple scripting engine, known as StratoScript . ... This script prints "Hello Universe" in the Script Console output window. core.debug( "Hello Universe" ); . ...

I'm interested in the structure of interstellar ``clouds'' (filaments, sheets, or whatever) of gas and dust over a wide range of scales, from Galactic spiral arms to AU-scale features -- also how these structures form and interact. ... The possibility of clumpy dust scattering in the Pleiades reflection nebula, which might explain its otherwise surprising UV scattering properties . ... Intricate structure of H I emission and self-absorption in the CGPS . ... Fractal studies of molecular clouds . ...

... In this paper, a project aiming to allow access to data archives by means of a query-by-example mechanism is described. The basic user query would simply be the submission of an input image, either 1-D or 2-D; the system should allow retrieval of archived images similar to an input one on the basis of some ``resemblance parameter". ... A system called QUBE is currently being designed to support the QUery-By-Example paradigm in accessing astronomical data archives. ... the QUBE User Interface. ...

... Apache HTTP Server Version 2.4 . ... On systems with multiple users, each user can be permitted to have a web site in their home directory using the UserDir directive. Visitors to a URL http://example.com/~username/ will get content out of the home directory of the user " username ", out of the subdirectory specified by the UserDir directive. ... Per-user web directories . ... the URL http://example.com/~rbowen/file.html will be translated to the file path /home/rbowen/public_html/file.html . ...

Next: Scan Distortion Up: Restoration of FOC Imaging Previous: Frame Size and . ... The image has had an unsharp masking technique applied in order to make the various defects and blemishes more obvious. ... This grid comprises 17 rows and 17 columns with a nominal spacing (prior to detector distortion) of 60 pixels. ... The occulting fingers, which cast very clear shadows on the full format science data, project into the images from the top right and bottom left edges of the frame. ...

... Just as magnetic storms are composed of substorms, the substorms themselves seem to be composed of smaller scale events. ... steplike expansion of the auroral bulge (Vorobjev and Rezenov, 1973; Sergeev and Yahnin, 1979; Murphree and Cogger, 1992; Nakamura et al., 1993) . ... 1990) . ... fine structure in the bursts of bremsstrahlung X-rays (Lazutin et al., ... Nakamura, R., T. Oguti, T. Yamamoto, and S. Kokubun, Equatorward and poleward expansion of the auroras during auroral substorms, J. Geophys. ...

... Table data are arranged in columns and rows, and stored in MIDAS files with the extension .tbl . ... An item in a table is accessed by giving its column and row in addition to the table name. The row number can either be given as an absolute value (i.e. the sequence number) or indicated by the value in a previously defined reference column. ... A table can be always expanded in the sense that its number of columns and rows is automatically increased when the allocated space is exceeded. ...

Next: Functionality Up: RGS_EXAFS Previous: RGS_EXAFS Contents . EXAFS means Extended X-ray Absorption Fine Structure. This CCF describes the detailed absorption lengths of different layers of CCDs in the vicinity of absoption edges to facilitate accurate calculation of quantum efficiencies. Away from the edges, the well-known Henke coefficients are used. There are two notable RGS instrumental absorption features by oxygen and fluorine. ... Michael Smith 2011-09-20 ...

A directory is a file that holds other files and other directories. ... Having your own directory structure gives you a definable place to work from and allows you to structure your information in a way that makes best sense to you. Directories which you create belong to you - you are said to "own" them - and you can set access permissions to control which other users can have access to the information they contain. ... Working with directories . ...

Next: The root filesystem Up: Overview of the Directory Previous: Overview of the Directory . This chapter is loosely based on the Linux filesystem standard, FSSTND, version 1.2 (see the bibliography, [ Qui95 ]), which attempts to set a standard for how the directory tree in a Linux system is organized. ... This chapter does not explain all files in detail. ... The major parts are the root, /usr љ , /var љ , and /home љ filesystems (see figure 2.1 ). ... Figure 2.1: Parts of a Unix directory tree. ...

This home page belongs to small group of scientists working at . Sternberg Astronomical Institute which is a part of Moscow State University . ... Электронная библиотека научно-технической и художественной литературы (доступна только из ГАИШ) . ... Local staff . Dr. Edward Kononovich (konon -at- sai.msu.ru), Associate Professor . ... Dr. Sergey Ayukov (asv -at- sai.msu.ru), Research Fellow, Webmaster of the group . ... Joint seminar of Solar Studies Structure Group and Solar Photometry Group . ...

... Current APO Weather . ... Search Site . ... Information for New Users . ... Technical Staff pages . Night Logs and Mailing Lists (maintained by APO) . ... Technical Documents and Database Search . ... Observer's Documentation and Procedures . ... Problem Reporting and APO Technical Documents Database Search . ... APO Drawing/Document Management Procedures . ... APO Technical Documents Database Search . Home Astrophysical Research Consortium . ... Mail Lists (maintained by APO) . ...

Storing and accessing the largest astronomical catalogues with the SAI CAS project S. Koposov1,2,3, O. Bartunov2, S. Karpov4 et al2. ... Why we want to build our own Catalogue Access Service The requirements for our CAS system The importance of the Database for the CAS (PostgreSQL & Q3C) The technical realization of CAS What has been already done Example of work TODO Storing and Accessing Astronomical Catalogues Existing projects CDS OpenSkyQuery CASjobs with SDSS They are all really great! ...

... The spacecraft of Magion type have been selected as the subsatellites of the Interball project: Magion-4 (C2-X) for the Tail Probe and Magion-5 (C2-A) for the Auroral Probe. ... Magion-4 was produced in the Czech Republic in collaboratrion with Russia, Ukraine, Hungary, Austria and has onboard scientific instruments and sensors designed and built in Czech Republic, Russia, Poland, Hungary, Romania, Bulgaria and Slovak Republic. ... Plasma flow detector VDP-S (Czech Republic, Russia) . ...

Next: VOLVOX Up: COBRA Previous: Compound plot procedures Contents . A small number of procedures capable of directly accessing NPOI raw packet files. packetdir , file Function. Return packet directory for specified file. This is an array of structures, each one specifying file, day number, time, type, length, and offset in bytes from the beginning of the file for a packet. ... packetlist , YYYY-MMDD Open all raw packet files corresponding do embedded system date YYYY-MMDD. ...

... Astrophysics Group . ... VSA . ... CAT . ... The Very Small Array is a custom-built radio telescope (operating between 26-36 GHz), designed expressly to make high resolution observations of the cosmic microwave background (CMB) radiation on angular scales around and below one degree. ... The VSA has been operated in ?compact array? and ?extended array? configurations (see the technical description below) and data collected to achieve high sensitivity in both regimes have been analysed. ... 1.75 GHz)...

... Tonight's Sky . ... Observing . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Observing springtime deep-sky objects with a large telescope . Springtime observing for small telescopes . ... Astronomy magazine Senior Editor Michael E. Bakich highlights the objects you can see this spring using a small telescope. ... In this video, Astronomy magazine Senior Editor Michael E. Bakich shows you some great small-telescope targets you can find in the spring sky. ...