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Jupiter Mission Slice Italic Font Free Download !!BETTER!!

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<div>When reading a TLE entry, XEphem assigns the valid range of dates for a set ofelements to the greater of 100 days or the time required for the mean motionto change by one percent either side of the element epoch.</div><div></div><div> 7.2 IndexThiswindow shows a list of all objects currently loaded into memory sortedby name. Or, by chosing a toggle button across the top, the list canbe restricted to just deep sky, stellar, binary systems, solar systemandEarthsatellites. The list does not include Favorites.</div><div></div><div></div><div></div><div>Each object name, including all alternate names, are in the scrolledlist onthe right. Clicking an arrowbutton moves the list by one object up or down; clicking above or belowthe thumbcontrol scrolls the list so that the top object moves to the bottom or visa versa. Clicking on an objectdisplays its defining parameters in the box to the left, and alsodisplays its .edb file format entry in the read-only text field below.</div><div></div><div></div><div></div><div>The list of objects may be searched by entering a glob pattern in the Search field thentyping Enter or clicking Search. If more than one object name matches,clicking Search again scrolls to the next candidate; the search wrapsback to the front when no more are found.</div><div></div><div></div><div></div><div>Buttons across the bottom function as follows:</div><div></div><div></div><div></div><div>Sky Point</div><div></div><div> </div><div></div><div>This will mark the object currently selected in the SkyView, repointing if necessary to move it into the field ofview.</div><div></div><div></div><div></div><div>Show in Gallery</div><div></div><div></div><div></div><div>If this object is in the Gallery, this button will be available and willdisplay the object. </div><div></div><div>Save as Favorite</div><div></div><div></div><div></div><div> This button will add the objectcurrentlyselected to the list of Favorites. </div><div></div><div>Tel Goto</div><div></div><div></div><div></div><div> This will send the object currentlyselected to the Telescope controlsystem. Whether this button is active depends on the state of thetelescope control subsystem when the Index window was opened. If thebutton state is incorrect, close and reopen the Index window. 7.3 FavoritesThiswindow allows you to add, arrange, remove and temporarily deactivate anarbitrary collectionof XEphem objects, called Favorites. Once defined as a Favorite, theobject remains available whether or not its original database file is currently loaded. </div><div></div><div></div><div></div><div>Favorites have special significance in several places throughoutXEphem. For example the rows in the Data Tableand in the Night at a Glance windows areexactly those of the Favorites. The Earth viewshows those Favorites which are satellites. Favorites are availableveryeasily in the Favorites menu in the Sky View.And the Solar System view displays thoseFavoritesthat are within the solar system.</div><div></div><div></div><div></div><div>Objects may be added to the list of Favorites in several ways:</div><div></div><div> from the Data  Indexwindow by browsing the objects currently loaded in memory then clicking Favorite; from buttons labeled Favorite located in several dialogsthroughout XEphem;</div><div></div><div>  from buttons in the popup menus of several views when clickedover displayed objects; and</div><div></div><div>  by entering its .edb format definition in the text field near thebottom of the Favorites window and clicking Add edb.</div><div></div><div> Note this field may also be used to edit an existing Favorite in-place. Each entry in the Favorites list shows its complete .edb formatdefinition. Each entry has the following controls:</div><div></div><div>Del</div><div></div><div> removes the entry from the Favoriteslist</div><div></div><div> </div><div></div><div> Up and Down arrow buttons</div><div></div><div> </div><div></div><div> move the entry up and down to arrangethe Favorites into any designed order. This is useful where Favoritesdefine rows such as in the Data Table and Night at a Glance windows.</div><div></div><div> </div><div></div><div> Use</div><div></div><div> </div><div></div><div> specifies whether to use or hide theentry fromthe rest of XEphem without actually Deleting it. The buttons across the bottom allow you to Save the current setof Favorites to a file and later Load them again.The suffix of these files must be .fav and will be addedautomatically if not included in the file named in the text field. WhenXEphem first starts, it automaticallyloads the file named in the Save text field. To save this file name, goto Preferences  Saveand Savethe XEphem*Favorites*File resource under the Favorites category.</div><div></div><div></div><div></div><div></div><div></div><div> 7.4 Download</div><div></div><div> Thiswindow provides an easy means to download from the Internet to disk andsimultaneouslyload into memory any file which contains objects defined in eitherXEphem's .edb format or the NORAD 2-Line Element (TLE) format commonlyused for Earth satellite. The file is saved in the Private directory, converted to .edbformat if it is not already.</div><div></div><div></div><div></div><div>Several particularly useful sites as of this build are already entered.The first five are from Dr. TS Kelso's Earth satellite lists at celestrak.org. The other four arethe Minor Planet Center's lists of hot comets and unusual asteroidsspecially formatted for XEphem.Click Get beside the desiredcatalog to download the file to the Private directory andsimultaneously load into XEphem memory.</div><div></div><div></div><div></div><div>Special files created by the Minor Planet Centerand LowellObservatory may also be downloaded. Each organization maintainsextensive lists of all known asteroids and produces on a regular basisKeplarian orbital elements precessed to the current date. Both are ofexcellent quality. When the Getbutton is clicked, XEphem downloads the appropriate file, uncompressesit, reformats it to .edb format and splits the results into two filesfor convenience. One file will contain all asteroids which can everbecome brighter than magnitude 13, and the other (with a "_dim" suffix)contains all the rest. All files are created in the user's PrivateXEphem directory. The real work is performed by two perl scripts,mpcorb2edb.pl and astorb2edb.pl, respectively. These may be run independentlyof XEphem if desired.</div><div></div><div></div><div></div><div> 7.5 Field Stars This window allows you to controlwhichfield starsources you wish to use. The window is accessible from the Main windowas well as from the Control menus of most graphical views.</div><div></div><div></div><div></div><div>XEphem uses the term "field star" to refer to the huge numbers of faintstars visible in any real world view of the sky. Field stars aregenerally far more numerous than could be reasonably accommodated inthe XEphem *.edb database format. For this reason they are stored andmade available in their own special compact forms for utmostefficiency. The downside to this approach is that field stars are notincluded in the totals presented by the Data  Files window norare they available for searching or inspection using the Data  Index window.This results in little loss of generality, however, since (oncefound!) they may be assigned to the user Favorites.</div><div></div><div></div><div></div><div>The controls in the Field Stars setup window are grouped intocategories, depending on the basic source of the stars, as follows:</div><div></div><div></div><div></div><div> 7.5.1 Hubble GSCThe Hubble Guide Star Catalog is a seminal work created by the SpaceTelescope Science Institute to support the Hubble Space telescope. Itcontains from 13 million unique stars, or about 300 stars per squaredegree of sky.</div><div></div><div></div><div></div><div>ASP CDROM Directory</div><div></div><div></div><div></div><div>This choice enables reading field starsfrom the Hubble Guide Star Catalog made available some years agoon two CDROMs published by the Astronomical Society of thePacific. Mount a CDROM somewhere onto your filesystem, type thename of the mount directory in the text field provided then turnthis option on and press Apply. Note that XEphem assumes your CDROMdriver removes the trailing ";1" from all filenames.</div><div></div><div></div><div></div><div>Local Cache Directory</div><div></div><div></div><div></div><div>This choice enables reading GSC fieldstars from your local disk. If this option is on along with theCDROM option, then as requests are satisfied from the CDROM acompact form of the same data will be written to files below thedirectory named in this option. Then the next time the same field starsare needed, and this option is on, they will be obtained from thelocal disk files rather than the CDROM. In fact, the CDROM is notneededor used if the local disk contains all the stars for any givenaccess. The entire 2 CDROM set loads onto disk in this format insome 180 MB. The default path of the directory which holds thedisk version is "catalogs/gsc" off the Shared directory. Note:There is also a utility in the tools/gsc directory, gscload, withwhich you may preload any entire CDROM segment at once if desired.These files are already included in te commercial version ofXEphem.</div><div></div><div></div><div></div><div>Internet to xephemdbd</div><div></div><div></div><div></div><div>This choice is to use the Internet toaccess an XEphem GSC server. To use this source, select thisoption and type the URL to the remote xephemdbd.pl in the textfield provided.</div><div></div><div></div><div></div><div>GSC 2.2 Directory</div><div></div><div></div><div></div><div>This choice enables using a local copyof the GSC 2.2.0.1 catalog in xe3 format. This catalog only containsstars between magnitude 10 and 18.5, so it must be used in conjunctionwithan additional catalog for completeness. The Hipparcos catalog is anideal companion and is automatically chosen as a convenience.</div><div></div><div></div><div></div><div> 7.5.2 USNO A or SA catalogs</div><div></div><div>Root directory</div><div></div><div> </div><div></div><div>This choice of field stars supports the SA and the A series ofastrometric catalogs produced by the US Naval Observatory. The SA2.0for example, includes some 54 million stars, about a tenth of the parent A2.0,spatially sampled so there is about 1,300 stars per square degree ofsky. Note that such a uniform distribution does not "look" much likethe real sky, but it is great for its intended use as an astrometricmesh for comet hunters or such. If you have such a catalog, simplyenter the name of its base directory and toggle this switch on.The default assumes a symbolic link, "catalogs/usno" off the shareddirectory. Multiple versions of the catalogs can be stored, each inits own directory, but only one may be active at a time.</div><div></div><div></div><div></div><div>The suggested citation for SA2.0 follows:</div><div></div><div></div><div></div><div> Monet, D., Bird, A., Canzian, B.,Dahn, C., Guetter, H., Harris, H., Henden, A., Levine, S., Luginbuhl, C.,Monet, A., Rhodes, A., Riepe, B., Sell, S., Stone, R., Vrba, F., Walker, R.,1998, USNO-SA2.0, (U.S. Naval Observatory, Washington DC). </div><div></div><div>This catalog has been included with permission of USNO as long aswe mention the following stipulations:</div><div></div><div></div><div></div><div> It may not be the latest version,check with </div><div></div><div> If you paid for XEphem, you paid forthe software, not this catalog. The catalog is available free fromthe USNO. </div><div></div><div> Inclusion of the SA2.0 catalog doesnot imply an endorsement of XEphem by USNO; nor was there privilegedaccess to the catalog; nor does the US Government affirm orguarantee that XEphem works properly in any way. </div><div></div><div> 7.5.3 Proper Motion catalogs</div><div></div><div>These large catalogs include information regarding proper motion.Two such catalogs are currently available ready for XEphem. You mayonly use one at a time, by choosing the corresponding toggle</div><div></div><div></div><div></div><div>PPM catalog</div><div></div><div></div><div></div><div>This is the Positions and Proper Motioncatalog of S. Roeser and U. Bastian, AstronomischesRechen-Institut, Heidelberg, published in 1990. The PPM includes468,586 stars rather evenly distributed throughout bothhemispheres. This averages out to more than 10 stars per squaredegree. The set here includes the original North and Southeditions plus the extended supplement. The set includes more than99% of the stars in the original SAO catalog and some 70% of theHenry Draper Catalogue (HD). While the SAO catalog is more or lesscomplete to V=9, with stars as faint as V=10, the PPM catalog isfairly complete to V=9.5, and goes somewhat deeper than V=10.</div><div></div><div></div><div></div><div>Hipparcos and Tycho-2</div><div></div><div></div><div></div><div>This catalog is a combination of theHipparcos and the Tycho-2 astrometric catalogs published by theEuropean Space Agency. This catalog contains all Hipparcos starsfor which astrometric and magnitude values are assigned, and alladditional non-redundant entries from the Tycho-2 catalog exceptmultiple-component entries. There is a total of some 2.5 millionstars, or about 60 stars per square degree. One example of a star withhigh proper motion is Groombridge 1830 (HD 103095), in Ursa Major,near 11h53m 37d44m. For a nice discussion see Burnham's CelestialHandbook, Volume III, page 1978. By comparing its position in eitherPM catalog with the same entry from the GSC one can deduce thisparticular GSC field was evidently taken in early 1983.</div><div></div><div></div><div></div><div>UCAC</div><div></div><div>This choice allows using the USNO Astrographic catalog with XEphem. Formore information on this catalog please refer tohere.As of release UCAC4, the directory specified must be that which containsthe u4b and u4i directories. In turn, u4b must contain all 900 z files andu4i must contain u4index.unf and u4hpm.dat.</div><div></div><div> 7.5.4 Skip likely duplicatesAll of the above may be used together with the regular databasefacility of XEphem. If this option is on, XEphem eliminates whatappears to be redundant entries for the same star from the variouscatalogs. Two stars are considered the same if their positions matchwithin the given number of arcseconds and their brightnesses differ byless than the given number of magnitudes. (The generous defaultmagnitude tolerance is because the GSC and the PPM use varyingfilters).</div><div></div><div></div><div></div><div>When deciding on the final selection for such duplicate entries thehighest priority is the local database, then the HD or SAO entry,then the PPM entry, then Hipparcos, then Tycho and finally the GSCentry.When you have made the desired entries, pressing Apply will attempt to check eachfilename, directory and Internet choice, as appropriate. The cursorwill be a Watch while the tests are in progress. If something does notseem correct, a warning window will appear and the option will beturned back off. If everything seems to be operating correctly, youare in business. The Ok buttondoes the same thing but then also closes the window if they allsucceed.</div><div></div><div></div><div></div><div> 7.5.5 NotesIf at any time something goes wrong during the acquisition of anyField Stars from any View, the responsible option in that view is alsoturned off automatically. The problem should be corrected and Fieldstars turned on again.</div><div></div><div></div><div></div><div>All field star sources will silently enforce limits on the total numberof stars they yield for any query. As of this writing, local queriesexcept USNO are limited to 30 degrees; USNO are limited to 15 degrees;network queries impose various limits.</div><div></div><div></div><div></div><div> 8.0 Preferences</div><div></div><div>The simple choice preferences are covered in the Main Window section.See Preferences menu,</div><div></div><div> 8.1 Fonts Thiswindow lets you change most of the fonts used by XEphem. The basictechnique is to specify a font, use the four toggle buttons to choosewhich action to take then perform the action in a particular fontcontext by clicking in the menus accessed from the menubar across thetop. </div><div></div><div>To browse the available fonts, type a pattern in the field provided andclick Search. This willdisplaythe names of all fonts matching a pattern. To see all available fonts,use the wild card pattern of a single star (*). To be more specific,specify the fields desired and fill the gaps between with the starwildcard. See the next section for a description of each field.</div><div></div><div></div><div></div><div>Clicking a font in the top list will display a sample and its full namein the region at the bottom.</div><div></div><div></div><div></div><div>The Buttons, Text and Other menus in the menu bar acrossthe top provide ways of referring to several font contexts. The fourtoggle buttons just below the menu bar determines what happens when oneof these context menu buttons is clicked, as follows:</div><div></div><div></div><div></div><div>Get current</div><div></div><div></div><div></div><div> When this toggle is active, clicking acontext menu button will cause the name of the current font for thatcontext to be displayed in the pattern field and history list. </div><div></div><div>Get default</div><div></div><div></div><div></div><div> When this toggle is active, clicking acontext menu button will cause the name of the last saved defaultfont for that context to be displayed in the pattern field andhistory list. </div><div></div><div>Set</div><div></div><div></div><div></div><div> When this toggle is active, clicking acontext menu button will cause the font named in the pattern fieldof this window to be applied to that context throughout XEphem. </div><div></div><div>Restore default</div><div></div><div></div><div></div><div> When this toggle is active, clicking acontext menu button will cause its last saved font value to bereinstated through XEphem. </div><div></div><div>Fonts that have been changed from their default values are tagged inthe Preferences  Savewindow (when opened or after you do a Refresh). This allows you to Savethe new fonts set here permanently. If you do not Save it, the changeonly effects XEphem until you exit.</div><div></div><div></div><div></div><div>There are a few situations scattered around within XEphem for whichchanging fonts at runtime from this window does not work perfectly.For example, changing to a smaller font does not shrink some windowsas much as you might expect. Such anomalies are known challenges anddo not indicate serious problems. After Saving the fonts andrestarting XEphem, all will work again as expected.</div><div></div><div> 8.1.1 XLFDThe font names are in the format called X Logical Font Description.There are 15 fields separated by hyphens. The fields are as follows:</div><div></div><div></div><div></div><div> Foundry</div><div></div><div> </div><div></div><div>The organization that digitized the font data.Family</div><div></div><div> The commercial name of the font.Weight</div><div></div><div> The relative weight of the font, such as bold, medium or regular.</div><div></div><div> Slant</div><div></div><div> A code indicating the slant: r Roman (no slant)</div><div></div><div>i Italic (slant left)</div><div></div><div>o Oblique (slant left) </div><div></div><div>Set Width</div><div></div><div> The width with respect to what the foundry considered normal.Choices include normal, condensed, narrow, double.Additional Style</div><div></div><div> Anything else needed to uniquely identify the font, such as sansor serif.</div><div></div><div> Pixel Size</div><div></div><div> The height of an em inpixels.Point Size</div><div></div><div> The height of an em intenths of a point, where one point is 1/72 inch.Horizontal Resolution</div><div></div><div>Vertical Resolutoin</div><div></div><div> The resolution of the device for which the font was designed, inpixels-per-inch.Spacing</div><div></div><div> A code indicating the spacing between characters in the font: M Monospaced (fixed pitch)</div><div></div><div>P Proportional spaced (variable pitch)</div><div></div><div>C Character cell (each character occupies the same size box) </div><div></div><div></div><div></div><div>Average Width</div><div></div><div> Average width of all characters in the font, measured in tenthsofa pixel.Registry</div><div></div><div>Enoding</div><div></div><div> The registration authority and their name for the character setfrom which the characters in the font are drawn. For example ISO8859-1,also known as Latin-1.Scalable fonts are indicated by 0 for point size, pixel size, x and yresolution and average width (fields 7, 8, 9, 10 and 12). To choose aspecific scalable font, specify desired values for some but not all ofthese fields, letting the system fill in the others.</div><div></div><div> 8.2 ColorsThis window lets you change most of thecolors used by XEphem. The basic technique is to use the four togglebuttons to choose which action to take then perform the action in aparticular color context by clicking in the menus accessed from themenubar across the top.</div><div></div><div></div><div></div><div>The possible actions are as follows:</div><div></div><div></div><div></div><div>Get current</div><div></div><div></div><div></div><div> When this toggle is active, clicking acolor context menu button will cause the current color for thatcontext to be displayed in the color patch in the lower right cornerof this window. </div><div></div><div>Get default</div><div></div><div></div><div></div><div> When this toggle is active, clicking acolor context menu button will cause the last saved default colorfor that context to be displayed in the color patch in the lowerright corner of this window. </div><div></div><div>Set</div><div></div><div></div><div></div><div> When this toggle is active, clicking acolor context menu button will cause the color currently beingdisplayed in the color patch of this window to be applied to thatcontext throughout in XEphem. </div><div></div><div>Restore default</div><div></div><div></div><div></div><div> When this toggle is active, clicking acolor context menu button will cause its last saved color to bereinstated. </div><div></div><div>Above the color patch are three sliding scales that allow you to definea color using either Red+Green+Blue or Hue+Saturation+Value, dependingon the toggle. Each scale ranges from 0 through 255. Hue is the basicspectral color, where 0 is red, 85 is green, 170 is blue. Saturationis the amount of color purity, where lower values mix in more white.Value is like brightness, where 0 is totally black.</div><div></div><div></div><div></div><div>The text field at lower left allows you to type a color using one ofthe standard descriptive names, such as "steel</div>

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