... Now the program knows which stars have been observed, and can show you a two-color diagram of the available standards. It displays a plot of the two nearest color indices for each band. ... In principle, these plots should employ the instrumental rather than the standard colors of the standard stars. Unfortunately, the choice of a gradient estimator must be made before extinction-corrected instrumental colors are available, so the standard colors must stand in for the instrumental ones. ...

... 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. ...

Next: Examples of Setup Files Up: Setup Files Previous: Setup Files Contents . Over 200 standard setup files have been created, covering many of the normal modes of observing. ... These especially include precisely defined, and somewhat complex cases like the Mark III standard modes (although MarkIII went the way of the dinosaur long ago. ... v '' files: . These are setup files for VLBI observations using VLBA recording formats. ... These are setup files for Mark III observations. ...

... a utility program that enables the user to interact with the UNIX operating system. Commands entered by the user are passed by the shell to the operating system which carries them out. ... The user may select which one they wish to use. a character at the start of the command line which indicates that the shell is ready to receive your commands. ... This is assumed to be the keyboard unless input is redirected or piped from a file or another command. the destination for information from a command. ...

... The absolute flux calibration of NICMOS will be calculated from observations of standard stars with known flux distributions F( ). ... In order to expand the set of IR standard stars in the appropriate flux range for NICMOS, M. Rieke, R. Thompson, and collaborators at the University of Arizona are making photometric observations of solar-analog stars, which will be used to normalize the solar spectrum to the observed IR magnitudes. ... Relative flux references accurate to 1.5% for standard...

Describes how funtools can be integrated into the ds9 Analysis menu. SAOImage/DS9 is an astronomical imaging and data visualization application used by astronomers around the world. DS9 can display standard astronomical FITS images and binary tables, but also has support for displaying raw array files, shared memory files, and data files automatically retrieved via FTP and HTTP. ... It can be manually loaded into DS9 from the Load Analysis Commands ... option of the Analysis menu. ...

DFS Department . Standard and recommended development tools . ... This tool is available on request from Helpdesk (except for the following machines: dfs3, dfs4 and dfs5, for which you have to contact Carlos ). ... Source Navigator IDE is recommended as a source code analysis and navigator tool for C, C++, Java, Tcl, [incr Tcl], FORTRAN and even COBOL on Linux:. ... webcheck is the DFS standard tool for archiving/retrieving DFS documents, web pages, Release Notes, schedules and ToDo lists. ...

Defined by Video Electronic Standards Association (VESA) in the Plug and Display (P&D) standard . ... TMDS Data 2 + . ... TMDS Data return . ... TMDS Clock return . ... 1394 pair A, data - . ... TMDS Clock + . ... USB data + . ... 1394 outer shield (optional) Charge Power return . ... 1394 Vg . ... DDC data (SDA) . ... DDC clock (SCL) . ... 1394 pair B, clock + . ...

... 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. ...

... This routine is designed to read in the current correlator set-up, go to the chosen source, and then take data pointing directly at the specified source. This routine will automatically wait until you are on source before beginning to take data. ... Additionally, this routine allows you to take an ON/OFF calibration pair (one 10s scan with the noise diode on, followed by a 10s scan with the diode off), using the chosen noise diode configuration (see Section 1.6 . ...

Optical and UV Spectrophotometric Standard Stars . ... Apache Point expresses its thanks to J. R. Walsh and to ESO for allowing us to place a copy of these pages at Apache Point. ... Access to the standards is either through: . ... The data for the standard stars come from four sources: . ... Data for 23 stars based on IUE and optical spectra and calibrated by the primary WD standards. ... The data from which the plots were produced are also available by ftp access from the standard star pages. ...

... Canadian Astronomy Data Center, DAO/NRC . SkyCat is a tool that combines image visualization with access to astronomical catalogs and data archives. SkyCat uses a standardized URL syntax to access a large number of data sources on the net. ... More information on SkyCat can be found at the SkyCat Web site. The ESO SkyCat Tool includes the following features: . ... PostScript color printing of the display (image + graphics), . ... overlay catalog sources on an image, . ...

... Using UNIX System Calls and Library Functions . ... To use system calls and library functions in a C program we simply call the appropriate C function. Examples of standard library functions we have met include the higher level I/O functions -- fprintf() , malloc() .. ... For most system calls and library functions we have to include an appropriate header file. e.g. stdio.h, math.h . ... Information on nearly all system calls and library functions is available in manual pages. ...

... AstroImageJ (AIJ) .. ... Reads and writes FITS images with standard headers . ... Provides a time and coordinate converter tool with capability to update/enhance FITS header content (AIRMASS, BJD, etc.) ... Creates color images and with native ImageJ processing power . ... AstroImageJ_Updater . Update operation now updates AIJ version number in Info.plist CFBundleVersion and CFBundleShortVersionString (MacOSX only) . ... AstroImageJ is ImageJ with astronomy plugins and macros installed. ...

XMM­Newton CCF Release Note XMM­CCF­REL­120 OM Photometry Bing Chen July 5, 2002 1 CCF components Name of CCF VALDATE List of Blocks changed CAL VERSION XSCS flag OM COLORTRANS 0007 2000­01­01T00:00:00 COLORMAG No 2 Changes The zero­points and color­transformations for optical filters are set based on observations of several hundreds standard stars. ... We can see that the simulated UV color­transformation based on this new CCF can represent the observations. ...

Next: Mission Operations Data Transfer . ... VLBI Tape Management . VLBI Tapes . ... When: As soon as the correlator is satisfied with the correlator output. back to top . ... What: Each correlator will maintain a data base including the status of all VLBI tapes under its control. ... The correlators will distribute tapes to mission elements based on the Observation Summary File produced by the RSOG ( Observation Summary File ) to ensure each element has enough tapes to support SVLBI observations. ...

Databases (NSDC) of the Natural Planetary Satellites. ... In the file of explanations, source of data or bibliographic reference is indicated. ... File of data (Data) *.txt. ... Les donnИes standard de la base NSDB (Standard Data) . ... Any bibliographic reference has the following fields (please, don't mix up these reference fields hereafter called "fields" with the search fields where you will enter the data and which are hereafter denoted as "search fields" or "text fields"): . ...

... They were determined as a result of orbit improving on the base of all kinds of optical observations available in the catalog of observations of the Minor Planet Center on March 16, 2014 (radar observations have not been used at this stage). ... As the MPC orbits do not all were improved simultaneously with EMP orbits, only 383866 sets of elements were used for data comparison (for selected sets of elements process of improvement had started with the use of the same observations). ...

We present an abundance analysis of light elements in the most massive chemically peculiar (CP) stars, He-rich stars. The analysis is based on both low and high-resolution observations collected at ESO, La Silla, Chile in the optical region and includes 6 standard and 21 He-rich stars. Light element abundances display a diverse pattern from under-solar up to above-solar values. ...

... 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 . ...