The aim of this section of the course is to enable you to use simple computer programs to solve a variety of common astronomical tasks. ... I have (somewhat arbitrarily) decided to use Python for this course, because it seems to be gaining popularity fast for astronomical data handling, and because some of you will have encountered it at the ATNF course. ... We've put Python (plus all relevant libraries) on the Stromlo Linux computers moron and maggot. ... Now log in to moron (or maggot). ...

... 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. ...

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. ...

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Next: Third: Create a session Up: Starting up correlator control Previous: First: Log on to б  Contents . Both the correlator interface and the correlator spectra display program are run from lbaccc . ... lbaccc . ... A more complete explanation of SPD, including available commands, is found in Appendix C. Next: Third: Create a session Up: Starting up correlator control Previous: First: Log on to б  Contents . ...

... Directives | ... Apache HTTP Server Version 2.2 . Apache > HTTP Server > Documentation > Version 2.2 > Programs . ... httpd is the Apache HyperText Transfer Protocol (HTTP) server program. ... Process the configuration directive before reading config files. -c directive . Process the configuration directive after reading config files. ... Questions on how to manage the Apache HTTP Server should be directed at either our IRC channel, #httpd, on Freenode, or sent to our mailing lists . ...

... Directives | ... Apache HTTP Server Version 2.2 . Apache > HTTP Server > Documentation > Version 2.2 > Programs . ... httpd is the Apache HyperText Transfer Protocol (HTTP) server program. ... Starting Apache . ... Configuration Files . ... httpd [ - d serverroot ] [ - f config ] [ - C directive ] [ - c directive ] [ - D parameter ] [ - e level ] [ - E file ] [ -k start|restart|graceful|stop|graceful-stop ] [ - R directory ] [ - h ] [ - l ] [ - L ] [ - S ] [ - t ] [ - v ] [ - V ] [ - X ] [ - M ] . ...

... APT . Using APT to Write Big Phase II Programs . ... Astronomer's Proposal Tool . ... 1) Use APT to perfect a template visit (or subset of a visit). ... b) Use the Export Text Proposal feature to create the new text representation of your perfected 1 visit program. Then use a script or text editor to create duplicates and import the program back into APT. or . ... Use the Export Text Proposal feature to create the text representation of your program and use a text editor to search and replace. ...

You can also see this page in Russian with using KOI8 (X Windows) or CP1251 (MS Windows) Cyrillic coding. The Laboratory supports the space TV experiments, mainly in the planetary exploration missions. ... Image Co-registration . ... PHOBOS mission - Martian satellites investigations. Phobos on the Martian limb, the image from Phobos-2 probe from 02/28/89. ... Russian Space Bulletin. ... Last modified at June,26 1997 Alexey Kuzmin: akuzmin@mx.iki.rssi.ru . Back to IKI home page ...

... Ham packet radio system including: . ... control computer RSC 2. dedicated software monitoring generation of probing pulses in onboard transceiver in radio beacon mode; . ground receiving network of ham radio packet communication to record probing pulses of onboard radio beacon; . ... Generation of onboard radio beacon probing pulses as time marks to ground receiving network (including ham radio receivers of USW) and transmission of the measurement results throughout Internet network. ...

... The user database is traditionally contained in the /etc/passwd љ file. Some systems use shadow passwords , and have moved the passwords to /etc/shadow љ . ... However, installing shadow passwords later onto a system that did not support them can be difficult. ... The crack љ program can be used to crack passwords; any password it can find is by definition not a good one. ... The user group database is kept in /etc/group љ ; for systems with shadow passwords, there can be a /etc/shadow.group љ . ...

... fork() . ... A process is basically a single running program. ... System is prototyped in <stdlib.h> . ... Each command and sorresponding arguments are put in a args array */ /* execvp is called to execute these commands in child process */ /* spawned by fork () */ /* cc -o fork fork .c */ #include stdio.h #include sys/types.h #include unistd.h main() { char buf [1024]; char * args [64]; for (;;) { /* * Prompt for and read a command. */ printf( Command: ); if (gets( ...

The Wideband Arecibo Pulsar Processor - SNAP Page . SNAP is an application that can process raw WAPP files. ... Both modes (SNAP and WAPP) process data in blocks of 2048 records. ... The plot window presents the WAPP data as different types of XY plots. ... The slider is used to select records in several display modes. ... The reference band is computed by simply averaging all 2048 data records. ... The plot window presents the WAPP data as different types of color intesity waterfalls. ...

... B=Command, 12AB=Azm, comma, 4000=Alt. ... Example: if the desired position is 220°, then POSITION_24BIT = (220/360)*224 = 10,252,743 Separate POSITION_24BIT into three bytes such that (POSITION_24BIT = PosHigh*65536 + PosMed*256 + PosLow). Exampe: PosHigh = 156, PosMed = 113, PosLow = 199 Send the following 8 bytes: a. Azm Slow Goto: 80, 4, 16, 23, PosHigh, PosMed, PosLow, 0 b. Alt Slow Goto: 80, 4, 17, 23, PosHigh, PosMed, PosLow, 0 The number 35 is returned from the handcontrol 4. ...

... user-defined data file formats . ... better integration with a user's analysis routines To add such functionality to SAOimage, we developed the XPA Messaging System that allows X programs to define points of public access through which data and commands can be exchanged with external programs. ... We have utilized XPA to develop "SAOimage: The Next Generation" (SAOtng), an extensible image display service that can cooperate with other processes and programs. ... SAOtng help pages . ...

... Federal Information Processing Standards Puplication (FIBS PUB 146-1) . ... PIPS 146 adopted the Government Open Systems Interconnection Profile (GOSIP) which defines a common set of data communication protocols that enable systems developed by different vendors to interoperate and the users of different applications on those systems to exchange information. ... 4.1 USE OF THE LAYERED PROTOCOL SPECIFICATIONS 12 . ... 4.2.3.3 Network Layer Protocol Identification 15 . ... SECURITY OPTIONS / 26 . ...

Hardware Structure CLOCKS BIASES SEQUENCER ADC DSP Communication Channel Data Channel FIBERLINK VME L C U Parallel-/ Serial-Port Host Computer SUN UltraSparc EDT DMA Board Hardware Structure CLOCKS BIASES SEQUENCER ADC DSP Communication Channel Data Channel FIBERLINK PCI-Bus Interface To RTC Host Computer Linux PC, 2+ CPU Physical Interfaces EDT DMA Interface Board plus Serial/Parallel Port Driver for data -channel delivered by EDT (Linux, Solaris) ... High processing speed requirements. ...

... Chapter 1. History of computers . ... Blocks of computer . ... Operation system . ... File system . ... Operations with files (NC) . ... File editor (NE) . ... Computer viruses . ... Windows 95/98 system . ... Computer documents (Word) . ... Answers to the questions . Appendix A. Windows 3.1 system . Appendix B. About the book for parents . ... On this page you will find the first chapter and introductions and control questions from several other chapters. ...

Winer Observatory P.O. Box 797, Sonoita, Arizona 85637-0797, USA . ... 2/3-m Telescope . ... Site . ... Commanding . ... In a typical robotic observing scenario, each afternoon, a telescope control computer obtains a set of objects to observe from its home institution from a command or script file. ... The file is then transferred to the telescope control computer at the Winer Observatory in Sonoita. ... The Iowa control computer then begins processing the telrun.sls file. ... 2013 Winer Observatory. ...

... Launch a new Ds9/SAOtng process 2. ... Load an image into a running Ds9/SAOtng process 4. ... Parameter Mand Type Default Constraints startviewer no boolean true falsejtrue If startviewer is set to true imgdisplay attempts to establish a communication link between itself and an active Ds9/SAOtng process upon invocation. ... all following commands are ignored in this case. withimage le no boolean false falsejtrue A boolean switch determining whether a new image should be loaded into Ds9/SAOtng. ...

... Up: Telescope and Instrument Control Systems . ... The system we are implementing derives from the successful TCS upgrade at the Michigan-Dartmouth-MIT (MDM) Hiltner 2.4-m telescope, with significant differences. It uses a PCI based PC running Linux, a 3-axis Galil DC servo motion control card for the 2 telescope and dome axes, modern relay logic control hardware, and existing drive and encoder mechanisms. ... Above the Hardware layer is an abstracted layer called Device Control . ...