... 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. ...

. To redirect the standard input for a command use the < (less than) character followed by the name of the input file. For example: mail tony < memo . This redirects the standard input to the mail command so that it comes from the file memo . The effect of this is to mail the contents of this file to the user tony .

... Apache HTTP Server Version 2.4 . ... Filter Input (request) and Output (response) content using sed syntax . ... sed_module . ... mod_sed is an in-process content filter. ... However, unlike sed , mod_sed doesn't take data from standard input. Instead, the filter acts on the entity data sent between client and server. mod_sed can be used as an input or output filter. mod_sed is a content filter, which means that it cannot be used to modify client or server http headers. ... mod_sed . ...

... Apache HTTP Server Version 2.2 . Apache > HTTP Server > Documentation > Version 2.2 > Modules . ... mod_ext_filter presents a simple and familiar programming model for filters . ... any programming/scripting language can be used, provided that it allows the program to read from standard input and write to standard output . existing programs can be used unmodified as Apache filters . ... mod_ext_filter directive to define a filter . ... program /usr/bin/enscript, with the type of . ...

... Colour transformations are supplied only for the three visual bandpass filter (U, B, V). ... compute the colour term (mag1-mag2) in the instrumental system . select the applicable colour transformation . ... the correct branch of the colour transformation is selected: . match the value of the optional parameter branch (if not set the default value 0 is used) to the value in the column BRANCH of the CCF COLOURMAG extension. the correct interval of the colour transformation is selected: . ...

... The command is: % ratty [-s system] [-I incdir] [-D symbol] [-b] [-?] input output ``Input'' is a text file containing a mildly extended FORTRAN, whereas ``output'' is the resultant standard (?) code. ... The string following this flag indicates the target compiler. ... VAX/VMS FORTRAN compiler. cft . ... RATTY assumes that target compilers other than these are strict FORTRAN-77 compilers. ... The string following this flag indicates an alternate directory to search for include files. ...

... Interim correlator, ri . ... The programs with "filter" in column 2 are filter programs that read from standard input and write to standard output. The filters are classified as to their data input and output types: . ... BtoB: binary input to binary output . ... Programs Table . ... scan an interim correlator datafile and output a summary of each scan in the file. corstripch . ... read an ainterim correlator or ri datafile and output each scan to a separate file (or a subset of scans). ...

... The first step to improve the FORS calibration is therefore to obtain data to allow a computation of the illumination correction across the field. ... Another limitation on the calibration accuracy has been the brightness of the Landolt standards which have forced the use of extremely short exposures introducing small but non-negligible shutter-time errors and also resulting in a very small number of useful standards per frame. ...

... New IRAF tools for the photometric calibration of optical/IR images are presented. The new tools are standard star catalog and world coordinate driven, requiring both accurate standard star catalog coordinate and accurate image coordinate data. Network access to standard star catalog servers is supported. ... The photometric calibration software will automatically convert the standard star coordinates from the standard star coordinate system to the image coordinate system. ...

A problem, that can arise when moving from Fortran 77 to Fortran 90, is dependent on a usual deviation from the standard, and has to do especially with user programs. ... With many Fortran 77 implementations we wrote PROGRAM TEST REAL X WRITE(*,10) 10 FORMAT('Give X = ',$) READ(*,*) X WRITE(*,*) X END In Fortran 90 we use "non-advancing I/O" instead. ... In some old Fortran dialects the statement TYPE was used to write on a typewriter terminal and PRINT was used to write on the line printer. ...

The primary goal of the Cycle 4 calibration plan was to provide an instrument calibration for Cycle 4 GO and GTO science programs as well as monitor internal health, photometric and optical stability of the instrument. ... Table 8.3: Summary of Cycle 4 Calibration Plans . ... Flats . ... Earth Flats . ... The internal flat fields are intended as delta-flats, in order to monitor the stability for the main photometric filter set as well as provide data for the generation of high S/N flat fields. ...

splitxyz - filter to divide (x,y,z[, distance ,heading]) data into (x,y,z) track segments . splitxyz [ xyz [ dh ] file ] -C course _ change [ -A azimuth / tolerance ] [ -D minimum _ distance ] [ -F xy _ filter / z _ filter ] [ -G gap _ distance ] [ -H [ nrec ] ] [ -M ] [ -N namestem ] [ -S ] [ -V ] [ -Z ] [ -: ] [ -bi [ s ][ n ] ] [ -bo [ s ] ] ... If xy _ filter is non-zero, the data is first divided into segments and then the x,y values of each segment are filtered separately. ...

. md5 [ -0123456789 ] [ -h] file . This program generates the message digest of the given file using the RSA Message Digest 5 (MD5) and other selected algorithms. If file is not given, the program uses the standard input. -0123456789 . Select algorithm from the following list . -0 null . -1 MD5 . -2 SNEFRU . -3 CRC32 . -4 CRC16 . -5 MD4 . -6 MD2 . -7 SHA . -8 HAVAL . -9 null . -h . Display the result in hex; the default is base-64 . David L. Mills (mills@udel.edu)

SAOtng supports FITS files internally, so that a standard FITS image file can be sent directly to SAOtng for display using XPA: xpaset SAOtng Also, when a new file name is sent to SAOtng, the program checks the first 2880 bytes of the file to see if it is a FITS file and if so, processes it accordingly. Support for other image file formats (or any other image format) is added to SAOtng by writing two external file access programs: . ... The command-line of the image section program . ...

This library currently provides subroutines used to transform theoretical spectra to intermediate and broad-band photometric indices. ... Typical tasks are the response functions and transmission curves for various filters, mirrors and photomultiplier windows. ... The response is zero outside the given wavelength range. ... real . input . Wavelength in nanometres . PHOT_1P21 . ... PHOT_AIR . ... PHOT_ALUM . ... Inputs must be valid as for PHOT_FILTER, PHOT_AIR, PHOT_ALUM and PHOT_1P21. ...

A computer controlled low light photometer for nightglow observations. Hardware units of portable photometer for low light measurements, especially night glow emission is described. ... Interface card contain three channels of 24 bit counter, 4 channels of 12 bit ADC and the buffer bus for the controlled motors of the altazimuthal fork mounting and filters wheel, the position encoders. ... Where N( ) is output signal photometer generated input light flux F( l ) . ... PMT # . 599 . ...

OptInt PmWiki : Pm Wiki / Forms . ... Forms processing can be found in the Cookbook (see below). ... input text name value size= n :) (:input hidden name value :) (:input password name value :) (:input radio name value :) (:input checkbox name value :) (:input select name value label :) (:input default default-name default-value :) (:input submit name value :) (:input textarea name [=value=] rows= n cols= n :) (:input reset name label :) (:input file name label :) (:input image name "src" alt :) . ...

... Axis Controllers . ... Guider Image Controller Commands . ... Multiple controllers (except the guide image controller) may co-exist in one box and share one serial interface. ... Some of these rules only apply to commands that the TCC may execute, and so may be relaxed for engineering commands. ... The command echo should be in the same case as the received command. ... Note: The Galil motion controllers output a semicolon for each command that appears on a line (as part of the command echo). ...

... Class . ... METHOD . ... java.lang.Object ij.plugin.filter.UnsharpMask . ... public class UnsharpMask . ... Unsharp masking subtracts a blurred copy of the image and rescales the image to obtain the same contrast of large (low-frequency) structures as in the input image. ... This method is invoked by a Generic Dialog if any of the inputs have changed (CANCEL does not trigger it; OK and running the dialog from a macro only trigger the first DialogListener added to a GenericDialog). void . ...

... 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. ...