... HST . ... Computing the true count rates for digital data. ... The following equation is used to find the count rate. x = ( raw counts / sample time ) . ... True count rates for digital data are corrected by using the first equation for a point source and the second for an extended source. a = ( y - pre_amp - darkrate ) / ( highvolt x pt_effic ) . ... True photocurrents (count rates for analog data) are corrected by the first equation for point sources and the second equation for extended sources. ...

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... Omdetect classifies a source as being extended if its computed semi-major axis is greater than that of the point-spread function's semi-major axis (computed by using moments), by at least twice the error computed for the former. ... 1) The quantities the total raw pixel counts, total corrected raw pixel counts and the total raw background counts are initialised to zero. ... d) The total raw background counts is incremented by the value of the corresponding background-image pixel. ...

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• Extended-source detection Algorithm
• Extended-source Validation Function
• SourceListFile

The pitch, roll, and focus errors of the telescope (measured and computed in AO9 survey and tilt sensor pitch,roll ) can be corrected by using the tiedowns. ... Tiedown positions to correct the pitch,roll, focus errors versus azimuth for za 2 through 20 degrees. ... The pitch, roll, and focus errors are plotted versus azimuth for za 1 to 20 degrees (the color changes every two degrees) . ... The pitch error is on the top and the roll error is on the bottom. ... The pitch and roll errors versus za. ...

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• http://www.naic.edu/~phil/hardware/vertex/sharemegsvertex/lcu/pcr/dos/OS2.TXT
• http://www.naic.edu/~phil/multiFreq/lbSbCbCTA21_aug00.html
• http://www.naic.edu/~phil/hardware/lbnfb/lbnfb.html

Follow-up astrometry and recoveries are made with the ANU 40 inch (1.0-m) f/8 reflector at Siding Spring Observatory (IAU code 413). ... A routine follow-up of 2003 WY153 on 2003 Dec 15 became much more than routine when a faint object with unusual motion vector was found close to the target asteroid. ... During routine astrometry with the 1.0-m to improve the orbit of the Apollo asteroid 2004 CB, the asteroid was found on March 30 to have a short tail! ... Siding Spring Survey Main Page . ...

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• Computer Lab Webcasts

The HI line magnitude m21 has been corrected for self-absorption effect following Heidmann et al (1972) , with parameter kappa=0.031. The inclination needed to compute this correction is given as parameter incl . If inclination is higher than 89 deg the maximum correction is limited to -0.82 mag. Corrected flux at other wavelengths are given in the parameters: bt , it . The measured HI flux is m21 .

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• Combining Methods
• Order Definition
• Using the COMPUTE Command

Next: Calibrate data Up: Basic widget procedures Previous: Reduce visibility data Contents . For the reduction of astrometric delays, corrections from atmospheric dispersion and array metrology have to be computed. ... Metrology correction can also be applied to the scan data later, in which case one would initialize these data before averaging. ... Due to the low SNR of the blue channels, R EDUCE D ELAYS P HASE E DIT can be used to flag these. ... I NIT Initialize (zero) metrology corrections . ...

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• Astrometry
• Los Cielos de Am , The darkest sky and the two galactic hemispheres
• ESO - ESO sky correction tools

... Posts tagged ?computer vision? ... Tags: automatic , CME , computer vision , data mining , feature detection , filament , image processing , machine learning , manifold , space weather , statistical learning , sunspot , SVM . Category: Algorithms , arXiv , Cross-Cultural , Data Processing , Imaging , Jargon | ... Tags: brains , computer vision , human eyes , Kendall , machine learning , shape theory , Sun , tsunami . ... Entries RSS . Comments RSS . ... Entries (RSS) and Comments (RSS) . ...

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• *imcnts* - Azimuthal profile of an extended source
• The AstroStat Slog Blog Archive [tutorial] multispectral imaging, a case study
• The AstroStat Slog grant

... The command is: % ratty [-s system] [-I incdir] [-D symbol] [-b] [-?] input output ``Input'' is a text file containing a mildly extended FORTRAN, whereas ``output'' is the resultant standard (?) code. ... The string following this flag indicates the target compiler. ... VAX/VMS FORTRAN compiler. cft . ... RATTY assumes that target compilers other than these are strict FORTRAN-77 compilers. ... The string following this flag indicates an alternate directory to search for include files. ...

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• Follow up observations
• Spectral Line Processing and FITS files
• Spectroscopy Follow-up

... Step 1: The magnetic field line tracing from the satellite position up to magnetic equatorial plane using IGRF magnetic field model. Step 2: Tracing back from the point (produced on the Step 1) to the Ionosphere (by using only dipole magnetic field) . ... The magnetic field line tracing from the satellite position up to the Ionosphere (the stop trace altitude 110 km) using Main (dipole) + Extraterrestrial magnetic field model (for example, Tsyganenko [1987], or [1989], or [1990] ) . ...

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• OFO IKI / SIOK

... Team . ... The main goal of observations of GRB host galaxies is accumulation of statistics of their spectroscopic and photometric properties. ... The Hubble diagram for 22 GRB host galaxies with known magnitudes and redshifts (GRB 970228, GRB 970508, GRB 970828, GRB 971214, GRB 980613, GRB 980703, GRB 990123, GRB 990510, GRB 990712, GRB 9912008, GRB 991216, GRB 000131, GRB 000210, GRB 000301C, GRB 000418, GRB 000911, GRB 000926, GRB 001109, GRB 010222, GRB 010921, GRB 011121 and GRB011211). ... 600...

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• shmidt_e
• Linux PCI-HOWTO: Ethernet Cards
• GRB follow-up team GRB workshop 2009

This document explains values, tables and other matters on solar physics computing pages. ... is040423.ete : SAHA-S tables, interpolation values: T, rho, X. Z is fixed at 0.02. See reference above. opal2005.etf : OPAL EOS, interpolation values: T, rho, X, Z. Downloaded from OPAL site , marked there as "2005", seems to be unpublished. opal2001.etf : OPAL EOS, interpolation values: T, rho, X, Z. Rogers F.J., Nayfonov A. Astrophys. ... The following values can be calculated: . ... dimensionless . ...

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• NAG's Fortran 90
• Specifications
• Image: The procedure is as follows: put a coin into special box, pull a cord

Eyepieces Forum Message . ... Post . ... Re The Computer For Dob . ... Post Message | ... Yes, it is possible to put the optical tube on an equatorial mount, but I'm betting you won't. Buying a scope made for its mount will probably appeal to you more, especially because a photography-worthy mount can cost more than the optics it carries! ... www.astronomy.net . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

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• Computers With CCD - an Astronomy Net CCD Equipment and Techniques Forum...
• You Followed The Apology With The Same Foolish Insult - an Astronomy Net
• I Don't Follow You! - an Astronomy Net Exploration Forum Message

... Step 1: The Footprint position calculation by the magnetic field line tracing from the satellite position up to the Ionosphere by using IGRF + Tsyganenko [1987] magnetic field model (the stop trace altitude 110 km). Step 2: Tracing back from the Footprint (produced on the Step 1) to the dipole equatorial plane (by using only IGRF magnetic field model up to the geocentric distance 8 RE and dipole field model after this distance). ... Back to the description . ...

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• Explorers 1 and 3
• The Polar Caps

... Next: The PROS Big Up: Software Systems Previous: Data Reduction Software . ... The srcinten task provides PROS users with a tool to compute count rates for point sources in the ROSAT High Resolution Imager (HRI). ... Corrected upper limits are cited at locations where the count rate falls below the source detection threshold. ... Srcinten is a new PROS task that computes and applies the above correction factors to the net counts in a user-specified aperture. ...

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• Imaging by an Optimizing Method
• Non-parametric Algorithms in Data Reduction at RATAN-600
• Modelling Spectro-photometric Characteristics of Eclipsing Binaries

The Network Time Protocol (NTP) is used to synchronize the time of a computer client or server to another server or reference time source, such as a radio or satellite receiver or modem. ... Information on the NTP architecture, protocol and algorithms can be found in the following articles and reports, which are available online . Mills, D.L. Internet time synchronization: the Network Time Protocol. ... Mills, D.L. Network Time Protocol (Version 3) specification, implementation and analysis. ...

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• xntpd - Network Time Protocol (NTP) daemon
• Astronomy Picture of the Day's Educational Links
• APOD: October 21, 1999 - Follow The Spots

... 2016. ... Wed, Dec 30, 2015 . An alternative to using the MCS for the computationally confident is to do the work on your own computer. All the software you need is free. ... If you want to do your project in python, I suggest downloading a prepackaged Scientific Python distribution, e.g. anaconda, Enthought or pyzo. Make sure you get the python 3 distribution (python 2 versions of these distributions also exist in some cases, but python 2 is the past, python 3 is the future!) ...

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• ALMA Phase Calibration Techniques at the Cavendish Astrophysics Group
• Download building of the radiospec package Bojan Nikolic web pages (r. 329)
• OptInt PmWiki : PmWiki / Wiki Style Examples

... We distribute the following software (free of charge): . ... The version we distribute has been adapted by P.Ganelin, S.Lvovsky <serge (at) mccme.ru>, and A.Shen <shen (at) mccme.ru> to work with Russian texts. It is available via ftp . ... The russified teTeX for Linux, made by A.Shen <shen (at) mccme.ru>. ... The russified MiKTeX 2.0 for Windows is also available via ftp . ... If you see any errors on this page, please write us <compwww (at) mccme.ru> ...

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• Labo J.-V.Poncelet: Grigori A. Kabatianski
• MCCME: rules
• Conference "Algorithms and Arithmetic"

Appendix B: Annotated Bibliography There are a wide variety of texts available for those who are interested in learning more about assembly language or other topics this text covers. ... Microprocessor Programming for Computer Hobbyists Neill Graham TAB books ISBN 0-8306-6952-3 1977 This book provides a gentle introduction to data structures for computer hobbyists. ... IBM Assembler Language and Programming Peter Able Prentice-Hall ISBN 0-13-448143-7 1987 A college text book on assembly language. ...

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• SWXCS
• Luca Franci's Homepage
• Francesco Tribioli Home Page

Computer Ephemeris. Precession/nutation matrix. Explanations. Each row contains for the date specified at 0 h of Time Dynamical Terrestrial nine elements of equatorial precession/nutation matrix minus unity matrix multiplied on 10 8 . This matrix is to be used for coordinate transformation of equatorial coordinates between mean equatror and equinox J2000.0 and real equator and equinox of date. ... This is the matrix for transformation from J2000.0 to date. ...

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• A computer controlled low light photometer for nightglow observations
• Main page of Computer Ephemerides.
• Reduction quantities for Dynamical time. Explanations for Computer Ephemeris.

. Russian Version [MS-Win] . [ News ] . [ Satellite data ] . [ SMIS ] . [ ] . IBM PC compatible personal computer with the following minimal required technical features: . CPU: 80386 and higher . not less than 4 MBytes memory . not less than 100 MBytes hard drive . at least Super VGA (256 colors) video system . The interface card complies with ISA standards and can be plugged into any IBM-compatible personal computer. Back to SMIS Home Page .

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• Software Development