We present a sample of 75 extinction curves derived from Far Ultraviolet Spectroscopic Explorer (FUSE) far-ultraviolet spectra supplemented by existing International Ultraviolet Explorer (IUE) spectra. ... Molecular hydrogen absorption features were removed using individualized H2 models for each sightline. The general shape of the FUSE extinction (8.4 ЮМm-1 9.6 ЮМm-1 on features with a resolution of 104 (~0.1 У? width). ...

... Stellar Evolution is driven entirely by the never ending battle between Pressure and Gravity . As imbalances are reached, the star is driven to find a new Energy source. ... Pressure and gravitational forces are equal, the star is stable and its core is sufficiently hot to fuse Hydrogen into Helium More about main sequence stars . ... The luminosity generated by the core fusion of Helium into Carbon is far greater than the shell luminosity associated with the fusion of Hydrogen into Helium. ...

Very important in the introduction of a new programming language standard is that old programs (at least those who obey the outgoing standard) can be used once again, with the new standard. When we went from Fortran 66 to Fortran 77 the extended DO -loop was removed (the extended DO -loop means that if you do not change any of the DO -loop parameters you can jump out of the loop and then jump in again (this is somewhat contrary to the concept of structured programming). ... 2, June 1993, page 1. ...

... Version 1.21.1 : - 2002-01-27 (CB) Fixed configuration file (SPR 2723). ... Code also tidied up. ... Version 1.8: 18 September 1998 Used correct syntax for parameter lists in .par file SPR 517: Version 1.7: 14 August 1998 parse call removed SPR 500 closed : removed cal from test/Makefile Version 1.6: 17 June 1998 SPR 441 closed : test harness now checks some values SPR 440 closed : .par file changed SPR 439 closed : file permissions changed Version 1.5: 21 May 1998...

... F. A. Primini, and H. E. Payne, eds. SVDFIT: An IRAF Task for Eigenvector Sky Subtraction Douglas J. Mink and Michael J. Kurtz Harvard-Smithsonian Center for Astrophysics Abstract. ... The technique is based on the iterative subtraction of continuum estimates and eigenvector sky models derived from singular value decompositions of sky spectra and sky spectra residuals. ... A subset of these eigenvectors is then fit to the ob ject+sky spectra and the fit removed, leaving residual ob ject spectra. ...

Next: Reduction procedure Up: Extinction and transformation Previous: Strategy . Standard stars can be included in the extinction solution, if one is careful. The problem is that there are usually appreciable ``conformity errors'' due to mismatch between the instrumental and the standard passbands [ 16 ]. ... Thus, it is wrong to assume that the transformation between the instrumental system and the standard system is exact, even if there were no measurement error in either system [ 1 ]. ...

... The standard lbn cal diode was compared to the standard diode. Using the standard diode value and the insertion loss the lbn cal value was computed every 25 MHz from 1200 MHz to 1600 Mhz. ... After the measurement, the insertion loss from the standard diode to the output of the coupler was measured over the frequency range 1200 to 1400 Mhz. ... The major uncertainty in the measurement is in the standard diode ENR and the insertion loss of the waveguide transition. ... freq [Mhz] . ...

... Binary large object. ... CGI is a popular interface used to create server-based web applications with languages such as Perl or C. A web browser, such as Netscape Navigator. ... Core JavaScript contains a core set of objects, such as Array , Date , and Math , and a core set of language elements such as operators, control structures, and statements. ... A JavaScript primitive value is a member of one of the following types: undefined , null , Boolean , number , or string . ... World Wide Web . ...

... The New 1997 IEEE Standards Products Catalog features the complete listing of standards publica-tions and services IEEE Standards offers, along with the information you need to place your order. ... Books and Other Products on Standards - contains a detailed listing of informative print and electronic publications relevant to standards and their implementation in areas of electrical engineering, electronics and computer technology. ... IEEE Standards Products Listing 22 . ... Power Electronics 41 . ...

... This article is part of the LWN Porting Drivers to 2.6 series . This article serves as a sort of final resting place for various small changes in the kernel programming API which do not fit elsewhere. The kdev_t type has been removed from the kernel; everything which works with device numbers should now use the dev_t type. ... Consider using these while fixing your code; the next time the type of i_rdev changes, you will be happier. ... Driver porting: miscellaneous changes, designated inits . ...

... ARC 3.5m | Standard Stars . Bright Star Catalog - broken into smaller files for easier management by TUI: . ... Double Star Catalog . ... Various Standard Star Links and associated TUI Catalogs . ... Data from which the plots were produced are also available by ftp access from the standard star pages.- specstds.tui . HST UV spectrophotometric standards. Data for 23 stars based on IUE and optical spectra and calibrated by the primary WD standards. ... Echelle Standards - echstds.tui . ...

... Superb optical performance coupled with time proven computerized pointing and tracking has made the LX200 ACF series a best-seller in the high-performance telescope class. ... MeadeтАЩs new LX70 Series offers high-quality German equatorially mounted telescopes with slow-motion controls and heavy-duty steel tripods. ... For crisp wide-field observing and imaging, few optical designs match the performance of a true triple-element apochromatic refractor. ... Meade Standard Field Tripod #07020. ...

... 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 . ...

... The material in "From Stargazers to Starships" meets several important requirements of the national standards. Pages cited below are from National Science Education Standards National Academy Press, Washington 1995. ... For example: the sections on astronomy not only describe calendars and sundials (including their construction), but also the astronomy of the ancient Greeks, including two different ways in which ancient Greeks estimated the distance to the Moon. ...

... As piles of ash are removed, the courtyard haтАж . Sidebar Left . Sidebar Top . No Sidebar . Sidebar Bottom . Sidebar Right . ... Title: As piles of ash are removed, the courtyard has the top few cm of contaminated soil removed as well. Description: NOTE: All images and movies are copyright and must not be reproduced or mirrored in any form without written permission. ... As piles of ash are removed, the courtyard has the top few cm of contaminated soil removed as well. ...

December 12, 2011 ================= Self-guiding, adaptive optical, and dual-CCD support for SBIG has been removed. See notes on SBIG support. November 29, 2012 ================= Support for Apogee's preflash option is being added to help remove the latent bulk image artifact that is present in images on Kodak sensors when they have been exposed to a bright infrared source. ... Until we know more, it is best not to use it for precision photometry unless you have tested it in your application. ...

Next: Head Positions and Track Up: OBSOLETE SECTIONS Previous: Mark III Observations Contents . ... Mark II recording systems have been removed from most active VLBI stations and the main Mark II correlators are no longer operating. ... Below is an example of a simple Mark II schedule. ... OBSMODE = '6cm Mark~II Standard Setup' ! ... SRCFILE = sources.obs ! ... EXAMPLE: Setup file for Mark~II observations (1 channel) at 6cm. -------------------------------------------------------------------- ! ...

----------------------------------------------------- 2.0 2009-07-21 turned into master tool: calling qc1Parser and ngasClient; new key FLASHBACK; dataclient removed 2.0.1 2010-01-22 bug fixed with workflow for no new data found ; PARSER_SKIP_AVAIL : supports qc1Parser -n 2.0.2 2010-04-26 line 959: simplify and support even non-standard trendPlotter calls with more than 3 parameters 2.0.3 2010-05-03 speeded up handling if no new jobs ...

Next: Coordinate Systems Up: IRAF/PROS Previous: Other Types of Files . A few new features and enhancements to the standard IRAF system have been introduced with the PROS software: . ... Default compound extensions are used by the PROS tasks when no extension is given for the output file name. Most PROS tasks allow the output file name to be defaulted, with the convention that the output file name will be composed of the input `root' name, plus the default extension specific to the task. ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2012 November 18 . NGC 6357: Cathedral to Massive Stars . Image Credit: NASA , ESA and Jes s Ma z Apell niz ( IAA , Spain) . Explanation: How massive can a normal star be? ... Toward the bottom of the image, stars are still forming in the associated emission nebula NGC 6357 . ... About APOD | ... A service of: ASD at NASA / GSFC . ...