Blackholes2 Forum Message . ... Photons Have Mass Also. ... Posted by Duane Eddy on October 21, 2004 14:38:35 UTC . Photons have zero rest mass, however when in motion they have a non-zero mass as does all forms of energy including charge. ... A charge is a standing wave. ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

. Comedi Documentation . Prev . Next . comedi_range_is_chan_specific -- range information depends on channel . #include <comedilib.h> . int comedi_range_is_chan_specific (comedi_t * device, unsigned int subdevice); . If each channel of the specified subdevice has different range information, this function returns 1. Otherwise, this function returns 0. On error, this function returns -1. Prev . Home . Next . comedi_get_n_channels . Up . comedi_maxdata_is_chan_specific

... This section gives a brief description of each of the parameters available to SCHED that are specifically for VLA observations or are especially useful for VLA observations. ... Should be provided for non-VLBI observations. ... This used to be required in order to obtain calibration data for the VLBI observations. ... FREQ: and DOPPLER Warning -- these parameters cannot be used for non-VLBI observations at the VLA since they are only used to adjust the baseband converter frequencies. ...

... 2007 November 19 . Aurora in the Distance . ... Explanation: Some auroras can only be seen with a camera. ... When photographing an already picturesque scene above Juneau , Alaska , USA , a camera caught green sub-visual aurora near the horizon. ... Resultant energetic particles such as electrons and protons rain down near the Earth's poles and impact the air. ... Auroras are known to have many shapes and colors . ... About APOD | ... NASA Official: Phillip Newman Specific rights apply . ...

XPA supports host-based access control for each XPA access point. You can enable/disable access control using the XPA_ACL environment variable. ... See XPA Access Points and Templates for more information about xpa templates. ... For example: xpaset -p xpa1 -acl "somehost -" will turn off all access control for somehost to the xpa1 access point, while: xpaset -p XPA:xpa1 -acl "beberly gs" will give beberly xpaget and xpaset access to the access point whose class is XPA and whose name is xpa1. ...

... This is done by taking in all input files the extension whose name is specified by the maintable parameter (called 'merged extension' in what follows) and merging the columns into a single output extension of the same name. ... Its contents is taken from the CCDID keyword (and QUADRANT for EPIC PN). ... To propagate other column specific keywords, they must be specified manually via the extensionchecks , mainattributes , maxattributes and minattributes parameters (see above). ...

... The following procedures are specific to the reduction of point astrometry data. dispinit ,[ stars _char ],[ class=class ] Initialize the dispersion corrections. ... Initialize (zero) the dispersion corrections for the specified stars. ... For scan data, initialization means setting the dispersion corrected delays equal to the averaged FDL data. dispflag , channels ,[ beams ] Flag the visibility phase for the specified channels and beams. ... Interpolate to the epochs of the point data. ...

... Our Solar System is a stellar-planetary unit consisting of the Sun ; the nine planets and their satellites; the asteroids, comets, and meteoroids; and interplanetary dust and gas. The dimensions of this system are specified in terms of the mean distance from the Earth to the Sun, called the astronomical unit (AU). ... The boundary between the solar system and interstellar space - called the heliopause - is estimated to occur somewhere beyond 120 AU. ... Earth . ...

... Apache HTTP Server Version 2.4 . Apache > HTTP Server > Documentation > Version 2.4 > Programs . ... htcacheclean is used to keep the size of mod_cache_disk 's storage within a given size limit, or limit on inodes in use. ... If one or more URLs are specified, each URL will be deleted from the cache, if present. ... Specify limit as the total disk cache size limit. ... By passing the -a or -A options to htcacheclean , the URLs within the cache will be listed as they are found, one URL per line. ...

... Apache HTTP Server Version 2.2 . Apache > HTTP Server > Documentation > Version 2.2 . ... Configuring Apache to listen on specific addresses and ports. ... When Apache starts, it binds to some port and address on the local machine and waits for incoming requests. ... For example, to make the server accept connections on both port 80 and port 8000, use: . ... One complicating factor for Apache administrators is whether or not an IPv6 socket can handle both IPv4 connections and IPv6 connections. ...

Astronomy Picture of the Day . Aurora in the Distance . ... 19.11.2007 . ... November . ... November 2007 . ... 2007 2008 . ... NASA Web Site Statements, Warnings, and Disclaimers . NASA Official: Jay Norris. ... A service of: LHEA at NASA / GSFC . ... U. Based on Astronomy Picture Of the Day . Publications with keywords: aurora . Publications with words: aurora . ... Above Aurora Australis . Yukon Aurora with Star Trails . ... Aurora Over Yellowknife . A Floral Aurora Corona . ...

... ISC Kosmotras . ... Dnepr Cluster Mission 2013 19 June 2014. ... Mission profile SHM configuration Reliability Dnepr LV Performance Launch Sites . ... Depending on requirements of a specific launch mission, ISC Kosmotras offers several configurations of the Dnepr Space Head Module (SHM), where customer s payload will be accommodated. ... The SHM configuration is selected based on the type of the launch mission: dedicated, cluster (multiple small satellite) or shared (primary payload and a piggyback)...

... The various Inst :Focus scripts allow you to take a series of exposures over a range of secondary mirror focus values, report the resulting FWHMs and optionally adjust the focus to the estimated best value. ... Slitviewer scripts assume the focus star is on the boresight. ... Focus scripts runs in three phases: . ... The script moves the boresight so the focus star is visible next to the slit, sets the focus to Center Focus, takes an exposure and tries to measure the star's FWHM. ...

October 16, 2006 (Monday) Srikanth Raghavendra, India . November 13, 2006 (Monday) Tuhin Roy, Boston . November 20, 2006 (Monday) Dave Soper, University of Oregon . ... Fall 2005 . Winter 2006 . Spring 2006 . Summer 2006 . Fall 2004 . ... Fall 2000 . ... Winter 2000 . Spring 2000 . Summer 2000 . ... L = 2 terms in the low-energy regime but no ? ... This system is remarkably well-suited to addressing outstanding issues in both cosmology and fundamental physics. ...

MRO Delay Line ICD Delay Line to Beam Relay System ICD INT-406-VEN-0008 The Cambridge Delay Line Team rev 0.1 10 August 2007 Cavendish Laboratory JJ Thomson Avenue Cambridge CB3 0HE UK 1 ICD Description Sub-systems Delay line Beam Relay system Org UoC Owner MF Brief description and preliminary contents Defines the mechanical interface between the delay line pipe and the beam relay pipe. ... An interface `stub' of length [TBD] provides a flange to which the beam relay pipe can be fitted see Figure 1. ...

... New tasks have been added; namely, . ... However, the help files were cleaned up a bit to remove references to the STIS tasks used as the basis for some of the original code. ... The diag_filenameroot_hist.txt file contains the version of the SAA persistence image histogram data that is actually fit. ... CALSTIS was changed to implement the rotation of the trace using the new reference files, providing more accurate traces. correction for a memory allocation problem when CTECORR is not PERFORM . ...

Regions designation | Regions models | ASCII files description . The real time regions passing . ... The IB_TAIL geocentric distance as a function of the UT (Plot) . Geomagnetic local time in the IB_TAIL position as a function of the UT (Plot) . The orbital data ASCII files . The IB_TAIL magnetic mapping and conjugations with groundbased instruments and anothers spacecraft . ... IKI RAN | SSC IKI RAN | INTERBALL mission  ...

There are two modes to specify the time interval of ephemeris. ... This mode is applicable if the date of opposition belongs to the basic interval of 16 months from November of the year preceding to the title one to February of the subsequent one. In this case the ephemeris is centered at the nearest standard moment (its Julian day minus 0.5 is exactly divisible by 10) which precedes or coincides with the moment of opposition of minor planet in specified year. ...

For calculating model spectra of early-type helium stars in LTE, we maintain a database of atomic data for, mostly, blue-visual absorption lines of light elements. The data is sorted with one file for each ion. ... III = ++ . ... It will work on both complete linelists (including the atomic data at the start and references at the end) or raw ion files (such as Ni2.d). ... A Fortran utility to convert linelists downloaded from the Vienna Atomic Line Database into the new QUB format. synspec_qub . ...