... Watchouts . ... Care needs to be taken when adding or subtracting XMM-Newton light curves to ensure that the start and stop times of the two time series are simultaneous. By default, evselect starts a time series at the time when the first event is found in the extraction region. ... In addition, time series extracted from the different cameras on board XMM-Newton will be non-synchronous by default. ... Pages maintained by SAS librarian . ...

... GPI Data Pipeline 1.0 documentation . ... Thermal/Sky Backgrounds . ... Using Thermal/Sky Backgrounds in GPI Data Reduction: . Creating Calibrations: . ... Thermal emission (from sky or telescope) becomes an important background source for wavelengths longer than 2 microns. ... The pipeline treats thermal/sky backgrounds similar to dark frames and is designed to subtract a thermal/sky background, scaled to the integration time of the science image, from K-band observations. ...

The FITS archive & data processing pipelines . ... The archived data are broad band images (BBI) and long-slit spectra (LSS) plus their associated template and calibration files. The data in HFA can enter into the HyperLeda processing pipeline and the results can be freely downloaded. ... Definition of the file system (structure of the archive) . ... The coordinate systems must be updated when the data (pixel data, other keywords, related tables) are altered (eg. rebinning of the image). ...

... Apache HTTP Server Version 2.4 . Apache > HTTP Server > Documentation > Version 2.4 > Virtual Hosts . ... IP-based virtual hosting is a method to apply different directives based on the IP address and port a request is received on. ... As the term IP-based indicates, the server must have a different IP address/port combination for each IP-based virtual host . ... In the terminology of Apache HTTP Server, using a single IP address but multiple TCP ports, is also IP-based virtual hosting. ...

When Apache starts, it connects to some port and address on the local machine and waits for incoming requests. By default, it listens to all addresses on the machine, and to the port as specified by the Port directive in the server configuration. ... There are two directives used to restrict or specify which addresses and ports Apache listens to. ... Listen can be used to make a single Apache server listen to more than one address and/or port. ... Syntax: Listen [ port | IP-address:port ] . ...

dfos = Data Flow Operations System, the common tool set for DFO make printable . ... initialization file . ... automatic installation for dfos tools . ... tool to launch dfos cronjobs . ... T here is the template initialization .dfosrc file needed by all DFOS tools to define the standard, common environment. ... Use the top navigation bar to find the tool documentation. ... History' displays the history file with useful information about the evolution of the tool, changes and backwards compatibility. ...

... PPTA timeline . ... List of projects . ... RedGW . ... One of the main goals of pulsar timing array projects is to limit the existence of a background of gravitational waves (GWs). Jenet et al. (2006) developed a method to determine such a limit if (and only if) the pulsar timing residuals were statistically white. In the paper we used data from six pulsars from the PPTA project to obtain a limit. The remaining pulsars were rejected because their timing residuals were not white. ...

... 01dec13: generator startup with site as load. 19nov13:Monitoring generators with sband Tx on . ... The site has 4 1 MegaWatt Cummings generators. ... All 4 generators start together, and then generators 4,3, and then 2 are idled. 2nd: generator output power . ... 3rd: fuel usage by generator . ... On automatic startup (with site as load) all 4 generators start, and then get shed 1 at a time . ... top: power vs time. ... Page 7: Power, consumption blowup at startup and full power (sum all generators)...

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

... Version: $Id: html-design.html,v 1.15 1994/11/26 19:53:43 connolly Exp $ . ... The HTML 2.0 Specification Review materials includes complete information on the HTML Working group of the IETF, the discussion of the HTML 2.0 specification, mailing list archive, and other supporting materials. ... JHU/APL's WWW HTML Developer's JumpStation - Page 1 . ... Gentle Introduction to SGML from the TEI guidelines. www-talk . ... There is also a hypertext archive. ... IETF Working group for HTML. www-html . ...

OptInt PmWiki . ... Edit Page | ... MROI Delay Line Design Contract . ... Access Keys . ... Note that this AKey+x access key only works this way on this page, because it is simply a shortcut for accessing the link that exists only on this page. The list of access key assignments in default PmWiki installations generally work throughout a site because links have been created in PmWiki skins and editing screens that incorporate access key parameters using the access key translation phrases. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Space Flight . ... Concept Spacecraft . ... By admin September 24, 2010 Posted in: Concept Spacecraft . One of the most grandiose of the vehicles suggested by Cole was the Aldebaran concept, a gigantic nuclear-powered launch vehicle he proposed in 1959. ... Scott Lowther has recently added fascinating scale drawings of this and other nuclear space propulsion concepts at his blog (the Unwanted Blog). ... The Amazing Aldebaran Spacecraft | ...

... December 20, 1995 . A Galaxy Gravitational Lens . Credit: NASA , HST , K. Ratnatunga. ... Around the center of the red galaxy image in the above photograph lie four blue "smudges." Each smudge is actually a different image of the same background quasar . ... Consequently, the huge mass of the galaxy is able to pull separate images of the quasar around it - an effect called gravitational lensing . Hence we see a gravitational mirage! ... About APOD | ... NASA Technical Rep.: ...

... Around the center of the red galaxy image in the above photograph lie four blue "smudges." ... Shapley 1: An Annular Planetary Nebula . ... At that time, the center condenses into a white dwarf while the outer atmospheric layers are expelled into space and appear as a planetary nebula. ... After a Sun-like star can no longer support fusion in its core, the center condenses into a white dwarf while the outer atmospheric layers are expelled into space and appear as a planetary nebula. ...

... Data may be optionally rescaled. copyheader copy header keywords from one FITS file to another ( see also FTOOL cphead ). copywcs copy just the World Coordinate System keywords from the header of one FITS image to others. fcolappend append a constant column to a FITS table fitsparsename Prints components of the extended FITS file name. fitspha convert ASCII files to FITS PHA ( See also listhead supplied with FITSIO. modifyheader modifies FITS header. ...

... The processing of these associated images presents new challenges to the HST data processing pipelines, which heretofore operated only on single images. ... Stage 1 (CALNICA) calibrates individual exposures without information from other members of the association. ... Stage 2 of calibration (CALNICB) only operates on associated images that have previously gone through CALNICA processing, and creates combined images for each distinct (non-overlapping) pointing within the association. ...

... About NEdit . ... Macros . ... Here's a language mode, a set of higlight patterns and a set of macros, dns.nm , for editing DNS database files. ... Language mode is set to DNS if a SOA record is find in the 200 first characters of the file. ... In the window background menu you have a macro DNS - Find Reverse IP Address . ... search the db.addr file (same assumptiom that you put all your reverse mapping records in this file) to see if there is already records with same name or same IP address. ...

asncombine -- Process and combine images in one or two NICMOS associations asncombine association . ... set to yes to include error planes in co-added images error. background . ... This is useful to use different background subtractions for different images. fheader . set to yes in order to multiply the background by the value of keyword "factor" in the image header. ... Set to yes to use quadrants statistics save in the image header from previous runs of asncombine. regquad1 . ...

Sending commands to an instrument or other actor is straightforward. ... This script simply takes a few darks. ... If the command fails then the script will terminate. Early termination will not affect this script because executing the command is the last step, but it can be very useful for longer scripts.) If a user cancels the script while the command is executing, the abort command is sent. ... Users are bound to abort your script and they should be able to do so safely and gracefully. ...

Gravitational waves from inflation generate a faint but distinctive twisting pattern in the polarization of the cosmic microwave background (CMB), known as a "curl" or B-mode pattern. ... Shown here is the actual B-mode pattern observed with the BICEP2 telescope, with the line segments showing the polarization from different spots on the sky. The red and blue shading shows the degree of clockwise and anti-clockwise twisting of this B-mode pattern. BICEP2 Collaboration ...