Next: Standard orientation Up: Preprocessing Previous: Bias correction . In a similar manner, long dark exposures of the same exposure time can be averaged to produce the DARK frames. ... Use the command COMPUTE/IMAGE to multiply the images by the exposure time and to add back the value for FLAT_BKG . ... Often, BIAS and DARK contain no large - scale structure. ... The commands AVERAGE/IMAGE and AVERAGE/WEIGHT offer number of options to compare the images and filter particle hits. ...

... spectrum . ... SPECTRUM will compute synthetic spectra, line profiles equivalent widths, specific intensities, assuming LTE, from model atmospheres of early-type stars. ... sterne models . file containing model atmosphere in 2006 Sterne format . ... T=25000, log g=4.0, vt=0, 1400-1415A. a) NLTE model atmosphere, spectrum computed with SYNSPECv25 (black). b) LTE model atmosphere, same linelist in converted format, spectrum computed with SPECTRUM (red) using this input file and this linelist . ...

... Thomson's multiple window method of spectral estimationthomson provides a very good estimate of the power spectrum by measuring the energy contained within a collection of rectangular shaped frequency intervals. ... Often, much of the fine structure of a spectral estimate is due to noise. It should be stressed that while other methods of spectral estimation (such as the Welchoppenheim method) exist, the Thomson method is particularly noteworthy for its precisely defined rectangular frequency bins. ...

Computer Ephemeris. Second order reduction quantities. Explanations. This page consist of four little tables. First and second tables contains J a (in 0.000001 s ) and J d (0.0001") for nothern declination, third and fourth contains the same information but for southern declination. Each table have 13 informational columns headed with right ascension values, and some amount of rows, labelled with date. ...

... ATNF Home . About ATNF . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . ... We have observed 210 Seyfert galaxies and 81 starburst galaxies with the 275-km Parkes - Tidbinbilla Interferometer (PTI) at 2.3 GHz (Norris et al., ... This result shows a significant difference between the two samples, and shows clearly that, although a few starburst galaxies may contain a buried AGN, the majority do not. ...

... This is the MS-DOS general help file. ... Type FASTHELP with no arguments to display the text in this file. ... APPEND Allows programs to open data files in specified directories as if they were in the current directory. ... COPY Copies one or more files to another location. ... FC Compares two files or sets of files, and displays the differences between them. ... PATH Displays or sets a search path for executable files. ... SYS Copies MS-DOS system files and command interpreter to a disk you...

Next: Photometry Up: Regions and Source Parameters Previous: *imcnts* - Find counts . This task (developed for use with optical images, but also useful with x-ray data) will quickly compute location, size, ellipticity, and position angle of sources. ... User can generate contour plots of any portion of the image and count rates in slices through the image. The program is advertised as ``quick [optical] photometry''. input file: rp110590_im1.imh . output file: logfile . ... Photometry . ...

... xntpd is an operating system daemon which sets and maintains the system time-of-day in synchronism with Internet standard time servers. xntpd is a complete implementation of the Network Time Protocol (NTP) version 3, as defined by RFC-1305, but also retains compatibility with version 1 and 2 servers as defined by RFC- 1059 and RFC-1119, respectively. xntpd does all computations in 64-bit fixed point arithmetic and requires no floating point support. ... Specify the name and path of the log file. ...

TclActor is a set of classes that allow one to write an actor for the 3.5m control system. ... Thus, to the extent that the underlying hardware controllers support it, an actor based on TclActor can execute multiple commands at the same time. ... Commands must be in the following format: [cmdId [msgId]] [verb [arguments]] where: . ... The device code tends to fall into several categories: code to support executing commands, code to handle replies and code to represent the internal state of the device. ...

... 2 XPOS pixels x-coordinate of centroided source centre . ... 5 RATE counts/sec Total measured source counts (after background subtraction) within default source extraction aperture (r=12 un-binned pixels), divided by exposure time. ... 7 BACKGROUND_RATE counts/sec Total estimated background counts (scaled by area ratio, from the background annulus) within default source extraction aperture, divided by exposure time . ... Filter WHITE is set to 6 pixels. ... Bit set integer value reason region colour...

WFC3 Instrument Handbook for Cycle 24 . ... Wide Field Camera 3 Instrument Handbook for Cycle 24 > Appendix A: WFC3 Filter Throughputs > A.2 Throughputs and S/N Ratio Data . ... Note that the plots show the S/N as a function of source magnitude for exposure times as short as 0.1 s, although the minimum exposure time for the UVIS channel is actually 0.5 s. Wide Field Camera 3 Instrument Handbook for Cycle 24 > Appendix A: WFC3 Filter Throughputs > A.2 Throughputs and S/N Ratio Data . ...

Next: NPOI raw packet data Up: Introduction Previous: NAT data Contents . These procedures use more elementary functions to produce diagnostic plots. plot_fdldelay , baseline _int [, beam _int ][, /slide ] Plot the residual FDL delay in microns. If keyword slide is 1, then open a sliding plot widget. plot_fdlpower , baseline _int [, beam _int ][, /sf ] Plot a power spectrum (or structure function if sf=1 ) of the delay. ... If beam is not specified, use currently loaded data. ...

MRO Delay Line Socket Initialisation Protocol for Delay Line Computers E. B. Seneta bodie@mrao.cam.ac.uk rev 1.0 13 October 2006 Cavendish Laboratory JJ Thomson Avenue Cambridge CB3 0HE UK Objective To describe the protocol by which network connections are to be made and broken between delay line computers. Scope This document describes how to make and break network connections for the purpose of sending and receiving delay line command, command data, status and telemetry messages. ...

... Content Model: PCDATA (i.e. text and entities) . To let users enter more than one line of text, use the TEXTAREA element. ... The text up to the end tag is used to initialize the field's value. ... User agents should tolerate the same range of line terminators within the initialization text. In a typical rendering, the ROWS and COLS attributes determine the visible dimension of the field in characters. ... User agents should allow text to grow beyond these limits by scrolling as needed. ...

. Language [RU/EN] Search: . Home . UP . Research . Projects . Services . Info . News . Events . Personal . Archive . Ionosphere and radiowave propagation: structure . The main page . Information . Publications: . 2011 - 2015 . 2009 - 2010 . 2007 - 2008 . 2005 - 2006 . 2000 - 2004 . 1995 - 1999 . Participation in International symposiums and conferences: . 2013 - 2015 . 2011 - 2012 . 2009 - 2010 . 2007 - 2008 . 2005 - 2006 . 2002 - 2004 . N.V. Pushkov . 09/04/2016 23:52 MSK . webmaster@izmiran.ru .

Comedi Documentation . ... I assume that your hardware device is in your computer, and that you know the relevant details about it, i.e., what kind of card it is, the I/O base, the IRQ, jumper settings related to input ranges, etc. To tell the comedi kernel module that you have a particular device, and some information about it, you will be running the comedi_config command. ... The overall info gives information about the device -- basically the same information as /proc/comedi. ...

The CHIANTI database consists of 4 primary ASCII files for each ion in the database. contains the energy levels in cm^(-1) It includes both experimental data and theoretical values of the levels energies. ... Wavelengths are based on experimental level energies where available; wavelengths calculated from theoretical energies are less accurate and are given as negative values. ... contains the spline fits to the electron collision strengths scaled according to Burgess and Tully (1992). ...

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... Next, the screen displays "Press 0 to align or Mode for Menu." Press "0" if you wish to begin Automatic alignment (or Easy Align, depending on your telescope model), or press Mode if you wish to choose a manual alignment method ("Automatic Alignment" displays, and you can press MODE to go through the menu to find other alignments). ... Note: If you press the "?" key while "Ctr Brightest Star" displays, the alignment star that AutoStar has chosen will display. ... Alignment successful" displays. ...

spectrum1d - compute auto- [and cross- ] spectra from one [or two] timeseries. spectrum1d [ x [ y ] file ] -S segment _ size ] [ -C ] [ -D dt ] [ -N name _ stem ] [ -V ] [ -W ] [ -bi [ s ][ n ] ] [ -bo [ s ] ] spectrum1d reads X [and Y] values from the first [and second] columns on standard input [or x [ y ] file ]. ... Units same as ypower. name _ stem .npower Power spectral density of the noise output. Units same as ypower. name _ stem .gain Gain spectrum, or modulus of the transfer function. ...