... Tonight's Sky . ... Observing . ... Sky this Month . ... The Sky This Week: April 1 - 10 . ... Sky this Week . Observing Podcasts . ... Astronomy for Kids . ... Imaging Basics . ... Observing springtime deep-sky objects with a large telescope . Springtime observing for small telescopes . ... Seasonal Observing . ... Observing Basics . ... Cassini Imaging Central Lab, Boulder, Colorado . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

... The very first step after correcting bias, dark, and overscan is to find the edges of the slitlets. This is done by the command LOCATE/MOS . This command takes the central trace of a flat-field and detects the edges of the slitlet by simple threshold comparison. ... The offsets in dispersion direction between the slitlets will be read from the header of the flat-field frame for FORS data and stored in :xoffset . ... The actual flat-correction is then performed with COMPUTE/IMAGE . ...

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). ...

. In an effort to provide a centralized database for indexing locations and descriptions of Shuttle debris, the editors of Astronomy Net have generated a database and web page where reports can be logged. This may or may not prove useful for cataloging debris reports, but Astronomy Net is happy to dedicate computer resources to help out any way possible. We express our sympathy and prayers to the families and friends of the Columbia crew. If you have located Shuttle debris, report it here.

... Aperture is the generic term used for any targetable area in an SI; a small slit, an occulting finger, different points on a CCD, a virtual aperture that encompasses a number of chips (e.g. WFALL), anything that can be specified in the APERTURE field of the proposal file, and a few more that can't. The scales, orientations, locations in the HST FOV, and a number of other properties of these targetable areas are calibrated and updated periodically. ... Observation Log (jitter file) Documentation . ...

. Pulkovo Observatory of Russian Academy of Sciences is situated . near Saint-Petersburg. It was founded in 1839. 196140, Saint-Petersburg, Pulkovskoye chaussee 65/1 . English version . Russian version . This page has been accessed times since May 1, 1999.

... 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 . ...

... Matching the Surface of Best Focus . ... The plug-plates of SDSS project are responsible for locating the optical-fiber plugs spatially and for defining the plug tilt with respect to the surface of best focus. ... Approximately 670 holes are drilled in each plate. ... In the first attempts to match the curvature of the plug-plates to that of the best focal surface, the bending fixture was set upon 3 6.630mm metal supports that were affixed to a table top and spaced 120 apart. ...

... Apache HTTP Server Version 2.2 . Apache > HTTP Server > Documentation > Version 2.2 . ... This document explains some of the directives provided by the core server which are used to configure the basic operations of the server. ... Related Modules . ... The ServerAdmin and ServerTokens directives control what information about the server will be presented in server-generated documents such as error messages. ... The ThreadStackSize directive is used with some platforms to control the stack size. ...

... The conference will be held at The Mint in Sydney's central business district. This historic building, originally built to host a hospital in the early 19 th century, later became the first branch of the Royal Mint in Australia. ... 10 Macquarie Street . ... The easiest way to get to the conference venue is to take the train. Simply get on any train stopping at St James station. After getting off at St James, you will get to The Mint after a short 100-metre walk along Macquarie Street. ...

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 . ...

... Note: Click here a longer, much more comprehensive overview of the polar aurora . ... Magnetic Field . ... Aurora . ... 3b. Fritz Aurora . ... Electrons . ... Typical aurora (Dick Hutchinson ї) . In Alaska, Canada, Norway, Finland or northern Russia, on a clear night, a greenish glow is often seen in the sky, known as the "Northern Lights." ... Auroral light is produced at a height of about 100 km (60 miles) when fast electrons, arriving from space, slam into atoms and molecules of the atmosphere. ...

... Note: Click here a longer, much more comprehensive overview of the polar aurora . ... Magnetic Field . ... Aurora . ... 3b. Fritz Aurora . ... Electrons . ... Typical aurora (Dick Hutchinson ї) . In Alaska, Canada, Norway, Finland or northern Russia, on a clear night, a greenish glow is often seen in the sky, known as the "Northern Lights." ... Auroral light is produced at a height of about 100 km (60 miles) when fast electrons, arriving from space, slam into atoms and molecules of the atmosphere. ...

. Unix commands are executable binary files located in directories with the name bin (for binary). Many of the commands that you use are located in the directory /usr/bin . When you enter the name of a command the shell checks to see if it is a built-in command. If it is not, it looks for the the binary file that the command name refers to in each of the directories that are defined in the PATH environment variable . more ...

Main Search Today Tomorrow This Week This Month Contact/About Title: Category: Date: Time: Location: Department: Cost: Public Lecture - Realizing Einstein's Dream: Exploring Our Mysterious Universe Other Fri, Oct 7 2005 3 p.m. ­5 p.m. Ochoco 204 - Central Oregon Community College, Bend Physics Free Dr. James Brau, UO professor of physics will speak on 'Realizing Einstein's Dream.' The universe is mysterious. ... What are these curious elements? ... Copyright © 2005, University of Oregon | ...

. Zelmanov Memorial Seminar . on . Gravitation and Cosmology . Sternberg Astronomical Instuitute . Main Page . Location . Organizers . Announcement . Archive . History . International . School Seminar . 1-5 March, 2004. LOCATION: . Sternberg Astronomical Institute . of . Moscow State University . Universitetskiy prospect, 13, . (SAI MSU) 119992 . phone (095) 939 50 06 . CONFERENCE HALL .

. XMM-Newton Science Analysis System . ssclib (ssclib-3.29.3) [xmmsas_20070708_1801-7.1.0] . Meta Index / Home Page . Module name: source_cutouts . Author: Ian Stewart (University of Leicester, ims@star.le.ac.uk) . XMM-Newton SOC/SSC -- 2007-07-08

... Nearby Dwarf Galaxy Leo I . ... Phi Persei: Double Star . ... Based on recent results, this artist's vision of the double star Phi Persei, 720 light years away, shows a bright, rapidly rotating massive star surrounded by a disk of gas. ... New Stars In 30 Doradus . ... Gas and dust clouds in 30 Doradus, also known as the Tarantula Nebula, have been sculpted into elongated shapes by powerful winds and ultraviolet radiation from these hot cluster stars. ... Our Galaxy in Stars, Gas, and Dust . ...

. 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 .

... General debugging: . hvps . ... Debugging ground switch not lifting . 28may12 : ground switch opening during run. 190154 sh1,2 - Schematic diagram hvps control . 190153 sh1,3 - control assembly hvps. shows location cables,tbX, etc. 190235 sh1-5 - schematic diagram hvps control main board . 190235 sh3 lattice fpga chip . ... 190374 logic diagram for lattice cominatorial logic. 190152 sh 1-12 System supervisor chassis sh 1-12 . ... Debugging Ground switch: . ... fpga logic on 190374 . ...