Next: Pre-processing the spectra Up: A Typical Session: Previous: Initializing keywords . ... The command INTAPE/FITS can be used to read FITS files from a magnetic tape or from disk. The commands ROTATE/CLOCK , ROTATE/COUNTER_CLOCK and FLIP/IMAGE enable to perform any rotation by a multiple of 90 degrees and image flipping without interpolating the pixel values. The command REBIN/ROTATE can be used for any rotation but in the general case will interpolate the pixel values. ...

... Bojan Nikolic web pages home . ... The size of font used by PGPLOT for labels and other text on the plots can be changed using the PGSCH command, which takes one argument which is the relative height of the characters. If this argument is greater than one then to font size will be larger than default. ... The easy way to fix this is to call the PGVSTD command after the call to PGSCH. This command allows a sufficient margin for usual labelling, taking into account the current size of the font. ...

The large magnetic cloud caused by coronal mass ejection at the Sun on January 6, 1997 came to the Earth at early morning on January 10 and continue to interact with Earth's magnetosphere till January 11 (see for example home page of this event prepeared by Dr. M.Peredo http://www-istp.gsfc.nasa.gov/istp/cloud_jan97/event.html ). ... During the days discussed here INTERBALL-1 satellite was in the magnetosphere (MS) near its dusk flunk - see the Fig. 1 for compearing. ...

ASC-FITS-2.0.1: ASC FITS File Designers' Guide (Rots and McDowell) (1999 Jun) . ASC-FITS-REGION-1.0: FITS region document (McDowell and Rots) (1998 Mar) . ... CXC-DM-001 Introduction: Data Analysis with the Chandra Data Model (2001 Oct) . ... 1998 Feb 26: SDS-1.0: Data Product List: obsolete . ... 1998 Mar 09: SDS-10.0: (ASC-FITS-REGION-1.0) FITS region document: see ASC-FITS-REGION-1.0 . 1998 Feb 09: SDS-11.0: FITS function document (superseded by ASC-FITS-FUNCTION-1.2) . ...

... Before you calibrate, you must prepare your data. This consists of loading, flagging, perhaps converting to ``channel-0'' datasets, and then splitting. ... Tracking accuracy: the tracking accuracy of the ATCA antenna is usually adequate at low frequencies, but at higher frequencies (where the primary beam is smaller), tracking errors become more deleterious. ... In addition, poor tuning of the antenna drive systems can sometimes cause poor tracking, particularly after a source change. ...

Analysis of polar motion variations from 170-yearobservation series . ... Pulkovo Observatory, St. Petersburg, Russia Abstract: . This work is devoted to investigation of low frequency variations in Polar motion (PM). It has been shown that the main PM features can be effectively investigated using not only time series of the Pole coordinates, but also using series of latitude variations obtained from observations at one observatory. ... polar motion, harmonic, Chandler wobble. ...

twistedActor is core code for writing an actor: an instrument control computer (ICC) or other controller that executes commands and outputs replies in APO-standard keyword=value format. twistedActor communicates using TCP/IP and supports multiple users. twistedActor is based on an older package named TclActor. ... twistedActor is written in pure python. ... As of 2014-08-28 I am using version 3.5.3. twistedActor may be installed using the standard distutils command: python setup.py install . ...

... Let us first find out which way -- rise in spectral resolution with some loss in the S/N ratio or increase in the S/N ratio with a fixed spectral resolution -- is better for the purpose of reduction of equivalent width determination errors. ... N -- number of counts for 1 ? ... line equivalent width, . ... Thus if the spectral resolution is managed to be increased (i.e. to decrease )without loss in the number of counts falling at 1 ?, the equivalent width measurement error is then proportional to . ...

To main of Laboratory . The research work and design of optical and optical-electronic devices are carries out by laboratory staff: . ... Lens: . ... In the layout 1 prism systems perform functions of dispersive element, corrector of aberrations, optical reducer. ... Spectral range 200 - 400 nm; . ... Back Forward . ... The main corrector's function are compensation of field aberrations of the main spherical mirror of a telescope (diameter of 600 mm, f'=1200 mm) and increase aperture ratio. ...

. Departement of Quantum Astrophysics . Head: Kurt V.G. , Prof. ultraviolet spectroscopy of planetary upper atmospheres and interplanetary/interstellar medium; . observations of gamma-bursts and optical identification of their sources; . long-base optical interferometry. Staff: .

... This problem affects all FITS-files generated between 16 September and 9 November 2004. ... DETAILED DESCRIPTION -------------------- AFFECTED KEYWORDS : The affected keywords are: CRVAL2A and CRVAL3A (beam position on sky in RA/Dec) CRVAL2B and CRVAL3B (beam position on sky in Az/ZA) CRVAL2G and CRVAL3G (beam position on sky in l/b) CROFF2 and CROFF3 (map center offset in RA/Dec) CROFF2B and CROFF3B (map center offset in Az/ZA) BEAM_OFFRAJ and BEAM_OFFDECJ (total beam ...

... STScI , and NASA Explanation: The atmosphere of a comet comes and goes . ... Immense but tenuous and fleeting, the inner atmosphere or inner "coma" of comet Hyakutake is seen in this false color picture . Oriented with the sunward direction toward the upper right, the picture is a composite of Hubble Space Telescope images recorded on April 3 and 4, 1996. ... April . ... Publications with keywords: atmosphere - comet Hyakutake . Publications with words: atmosphere - comet Hyakutake . ...

... Forum: The Linux Kernel Hackers' Guide . ... Keywords: kernel tuning, file handles, Bus error . ... Increasing number of open file handles in kernel. I have successfully increased the number of files on my system (Linux 2.0.30) by editing the following file: . ... I also increased NR_INODE to 5000, and NR_FILE to 4096. I then rebuilt the Kernel (and modules for good measure) and installed the new image. ... Increasing number of open files parameter by Simon Cooper . ...

... ESO, the European Southern Observatory . ... Travel and Contacts . Travel to ESO Headquarters . ... Green ESO . ... Survey Telescopes . ... Star Clusters . ... Stars@ESO . ... ESO 3.6-metre telescope . ... MPG/ESO 2.2-metre telescope . ... ESO 1-metre Schmidt telescope . ... Interferometric observations of a single star are shown, as the distance between the two telescopes is gradually increased. The observed pattern at the focal plane clearly changes, and the "fringes" disappear completely. ...

. The command man -k keyword . displays a one line synopsis of each command that has "keyword" in its description. Enclose a "phrase" in single quotes to search for it. man -k ' phrase_to_search_for' . Examples .

Magnetic field measurements onboard the Interball Tail spacecraft are carried out by the FM-3I instrument which consists of two flux-gate magnetometers covering two different ranges: [-200, +200] nT and [-1000, +1000] nT. Besides scientific goals, the FM-3I experiment data is used to perform the attitude control of the Interball Tail spacecraft. ... August 22, 1995 . ... October 18, 1995 . Top of the page . ... Back to the Interball Home Page . ...

... Up: Software Applications . ... We discuss how and why FITS data should be encapsulated in XML. ... A probable path in this cycle could be: data are taken at the telescope as FITS, they are submitted to a publisher in L A T E X , the publisher converts these data into SGML, data centers convert the SGML into some form of ASCII (such as HTML), and the end-user downloads this and converts the data back into FITS (!) for use in various analysis software. ... XDF and FITSML are works in progress. ...

... A radio galaxy is a galaxy that emits an unusually big amount of energy at radio wavelengths. ... Inside of each galaxy with an active nucleus (radio galaxies are among them) there must be a system of a "central machine" responsible for the colossal amount of the emitted energy from radio to gamma ranges. ... Sometimes a radio source in an active galaxy may flare again if the needed conditions appear (a new portion of matter would fall into the furnace of the "central machine"). ...

... Normalised spectra of all central stars of planetary nebulae observed in the 075.D-0289 campaign ordered by increasing effective temperature from top to the bottom. ... The presence of a magnetic field in the central star may be the reason for this lack of symmetry, but observational works published in the literature have so far reported contradictory results. ... We determine the magnetic field from spectropolarimetric observations of ten central stars of planetary nebulae. ... Results. ...

Nowadays at the Department the experimental and theoretical investigations, including astronomical and ionospheric observations, active experiments with space vehicles are taking place. ... Solar Corona physics and erruptive phenomenae. ... Stellar astronomy. ... The Department has organized and put into practice more then 50 expeditions for observation of Solar ecllipces, aurorae polaris, comets, meteor streams, controlled space experiments, and also for investigations of geophysical characteristics. ...