... Tonight's Sky . ... Sky this Month . ... The Sky This Week: April 1 - 10 . ... Sky this Week . ... Sky Events . ... Tour the Deep Sky . ... Observing springtime deep-sky objects with a large telescope . ... How large a body would it take to make a crater as wide as the Gulf of Mexico? ... The Gulf of Mexico is the result of plate tectonics, or "continental drift," in which the plates comprising the Earth's crust change position over time. ... Get instant access to subscriber content on Astronomy.com...

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... Version 0.27.1 2000-11-09 (MT) -------------- - Now depends on dal-1.130.1 - dspurify now converts X columns to int32 columns. - dspurify now uses hduname to name tables. ... Implement dscp which copies objects - Implement info files - dsverify now checks attribute values - Now depends on dal-1.119 Version 0.20 2000-04-20 (MT) ------------ - Implementation (prototype) of dsvalidate, which uses a template structure ( similar to the output from dsstruct ) to check the validity of a given dataset. ...

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. At login the Bourne shell reads the initialisation files /etc/profile and $HOME/.profile . You cannot change the content of /etc/profile , but you have permission to edit the contents of .profile , which is in your home directory and is owned by you. Tip ... Displaying current variables . Making a temporary change . Making a lasting change . Examples .

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... This version of the GHRS Instrument Handbook has had significant rewriting, mostly to incorporate information about the proposal writing software called RPS2 . ... We anticipate that Cycle 6 will be the last for the GHRS. ... Because Cycle 6 is short for both the GHRS and FOS, it is STScI's intention to schedule spectroscopic observations early in Cycle 6 to the greatest extent possible so that as many FOS and GHRS programs may be completed as is possible. ... Cycle 6 and the End of the GHRS . ...

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OptInt PmWiki : Pm Wiki / Other Variables . ... This variable is an array that is used for defining Page Variables . ... To have the page variable $MyVar produce the contents of the internal variable $myvar , many folks try the following which does not work: . ... There are several correct ways to do this, depending on whether you need the value of the $myvar variable as it was at the time the $FmtPV entry was created, or at the time that a particular instance of $MyVar is being rendered on a page. ...

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... Corresponding authors will receive an e-mail with a PDF file of paged proof for checking and correction. The file can be read and edited using Adobe Acrobat Reader (version 9 and higher) which can be free downloaded via the Internet ( http://get.adobe.c om/reader/ ). ... You can use text correction tools to make corrections (after selecting the necessary text fragment). ... For users of Adobe Reader 9: . ... to insert text without replacing the existing text, use the "Insert text at cursor" tool. ...

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... Bad Astronomy . ... I think I will break from my usual format of Bad Astronomy/ Good Astronomy by saying that the way we define seasons currently is not strictly bad, but I feel (in my opinion!) that it could be better. The definition of when the seasons begin is at the moment of solstice or equinox; that is, winter (in the north) starts on December 22 nd and summer starts on June 22 nd . ... Now imagine breaking up the Sun's 46 degree up-and-down yearly swing into 1 day intervals. ...

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... 090907: exchanging/replacing pdev spectrometer . 090907: Making sure all boxes select external clock . ... switch the Ethernet cables between the two spectrometer boxes. Normally group 0 spectrometer boxes go to 1 switch and group 1 spectrometer boxes go to another switch . ... As long as you are only switching 1 set of boxes you don't have to mess with the Ethernet cables since the switch for group 0 is connected to the switch for group 1 via a 1 gbit link. ... cd /dump/pdev/files . ...

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... PmWiki / . ... AuthUser is PmWiki 's identity-based authorization system that allows access to pages to be controlled through the use of usernames and passwords. ... Most of AuthUser 's configuration is performed via the Site.AuthUser page. ... Pages and groups can be protected based on login account by using "passwords" of the form id:username in the password fields of ?action=attr (see PmWiki.Passwords ). ... Group password memberships are maintained by editing the Site.AuthUser page. ...

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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   , /var   , and /home   filesystems (see figure 2.1 ). ... Figure 2.1: Parts of a Unix directory tree. ...

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I. Installation . ... AMPLE package distributive (created with program InstallShield for Microsoft Visual C++) has been downloaded on FTP server of IAA RAS as archive Ample.zip. ... Note: If the window "file download" appears, select Open... switch button, then press OK button. ... The shortcut for AMPLE will be linked with this folder, and auxiliary files will be created here during AMPLE work. ... When running AMPLE all auxiliary and new configuration files are created in the WORK folder. ...

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The night after the John Glenn program, I pitched the terraforming idea to my students. I asked them if they'd like to terraform Mars as a big class project; I wanted to throw the idea to them and see how they would react. Already I had a vision of splitting the class into several groups and having each group take charge of a portion of the project. ... Following my initial idea on how to conduct the project, I split the class into six groups, each student choosing his or her group. ...

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... It also provides log file of the consoles. ... Makefile first attempt at a Makefile console.c client sources conserver.c server sources cons.h source configuration constab sample config file console.1 man pages constab.5 conserver.8 BUILDING and INSTALLING First off, this stuff isn't guarenteed to work, or compile or anything. ... This compiles the client and server. ... Edit /etc/constab (on the machine which will be the console server), and create whatever directories you need for the log files. ...

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... Apache HTTP Server Version 2.2 . ... Apache is configured by placing directives in plain text configuration files. ... Any directive may be placed in any of these configuration files. ... Apache configuration files contain one directive per line. ... Directives placed in the main configuration files apply to the entire server. ... The server administrator further controls what directives may be placed in .htaccess files by configuring the AllowOverride directive in the main configuration files. ...

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... User Name: . Password: . ... If you do not have a user name and password for this site, click here to obtain one. ... Please do NOT sign up again - use the automated email reminder below! If you email address has changed, email us and we'll update it . Enter your email address below and the server will automatically send your username and password to you in two separate emails. EMail: . Membership . ... Copyright (c) Amateur Telescope Makers of Boston, Inc. About Us Contact Us ...

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... Does your system have Motif? ... Download and untar XmTel. ... Compile XmTel and copy the binary to /usr/local/bin . ... Check that the XEphem app-defaults file points to the place where the essential fifo and catalog files are located. ... Create the fifos in the xephem/fifos/ directory referred to by the app-defaults file. ... Copy xmtel to a directory in your search path such as /usr/local/bin cp xmtel /usr/local/bin If you use system directories this step must be done as root or superuser. ...

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... Make a new empty directory; you'll need about 6 megabytes; . ... Send some mail to me ( bill@nineplanets.org ) with the URL of your new copy and its physical location so I can update the mirror list; also let me know if you would like to receive email notifications of future updates. ... add some text to describe your site; . ... 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. ...

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