Next: How the Data Up: CCD Reductions Previous: Combine Example . Having obtained some background, let us now start to process the input frames according to the scheme in Section . As indicated in that section the reduction sequence is, in a simplified version the calibration of science frames consists of the following steps: . determine overscan correction and trim area; . preparing calibration frames; . ... Overscan correction and trimming . ... Tue Mar 28 16:52:29 MET DST 1995 ...

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Radio Interferometry Principles . Radio Interferometry Signal Processing . ... A radio interferometer consists of a pair of directional antennas that are tuned to receive radio emissions from a source in a desired RF band. ... The antennas are pointed at the radio source of interest and are set up to receive the signal and process it into a form suitable for transmission to the correlator. ... In connected element interferometry, the digital signal goes directly to the correlator. ...

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... Perform basic two-dimensional image reduction. Reject cosmic rays from CCD data. Process the contemporaneously obtained wavecal data to obtain the zeropoint shifts in the spectral and spatial directions. ... Subtract science image from wavecal . ... For each image in the science file, this task selects the wavecal in the wavecal file that is closest in time to the science image, and it copies the keyword values for the spectral shift from that wavecal header to the science header. calstis12 . ...

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• HDF-S Flanking Fields Data Reduction / Technical Issues
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• Persistence GPI Data Pipeline 1.0 documentation

... The choice of the spectrograph design (Fig.2) is determined by the quantity R, the overall dimensions of the PF cage and the restrictions on the rigidity of the structure of the device. ... As the camera's objective a fast 4-lens aplanat is used having a focal distance F cam =140 mm and a relative aperture of 1:1.8, the resolution at the centre is no less than 80 gr/mm, that over the field at a distance of 3 mm from the edge along the frame ( ) diagonal is 35 gr/mm. ...

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• fork()

Next: Rev0, MPE-Processed Data Up: DETAILED LIST OF ROSAT Previous: DETAILED LIST OF ROSAT . Prior to June 1994 data processed in the U.S. were supplied in the following files: . ... rp<seq#>.fits . Photon events, data quality, and good time intervals (binary table) . ... Compressed image for display -- total energy band . ... Compressed image for display -- hard energy band . ... Compressed image for display -- soft energy band . ... Selected source spectra (ascii table) . ... Aspect files . ...

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• The AstroStat Slog signal processing magazine
• The AstroStat Slog Blog Archive [tutorial] multispectral imaging, a case study
• Filtering ROSAT HRI data on the basis of background level

Next: Summary of Imaging Strategies Up: Primary Beams and Mosaicing Previous: Mosaicing Observing Strategies . ... Splitting: As with conventional reduction, for calibration and imaging purposes, it is easiest in Miriad to split the data into datasets containing a `single source' and single frequency band. ... vis=mosaic.uv . ... Data Selection: With mosaic visibility datasets, the select=ra and select=dec selection sub-commands can be useful to extract or manipulate a subset of the visibility data. ...

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• Spectral Line Processing and FITS files
• Basic Processing
• User Parameters - Data Location & Beam Selection CentralProcessor 0.11

... The SAS_ODF environment variable shall be set to the summary file produced by odfingest , or to a directory containing the data, and access to calibration files shall be set through cifbuild . ... In order to process a single exposure containing fast mode data as . ... Note that tracking data may not be good enough, in which case no plot is produced. omdrifthist set =/path_to_your_data/fast/tmp_tracking plotfile =/path_to_your_data/fast/P0125321001OMS002TSHPLT0000.PS trackradius =0.5 hardcopy =yes ....

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• SAS processing
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• General

... This paper describes the main algorithms used by the Einstein Level One processing to create the exposure masks and the background maps for Einstein IPC images, and how these algorithms were recreated in the IRAF environment. Our goal was to recreate the algorithms used by the Level One Processing to create exposure masks and background maps for Einstein Image Proportional Counter (IPC) data (cf. sections 2.5 and 2.7 of Harnden et al. ...

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• NICMOS Calibration Pipeline: Processing Associations of Exposures
• Doing Theoretical Astrophysics With HST's Data Processing Pipeline Software:
• Representations of Celestial Coordinates in FITS

... CREATED are counted): we count executed AND created ABs, to include the science associations . ... number and size of raw and product CALIB files (if from executed ABs) . number of ABs (created and executed) . ... Raw files: Number of raw frames are extracted from executed ABs which effectively means that only raw frames are counted which have been processed. ... Every raw SCIENCE frame from RAWFILE section in an executed AB is counted (before 2011-10-01: every associated and packed raw file) . ...

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• The Very Large Telescope Project
• ESO - Overview
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... Stellar Evolution is driven entirely by the never ending battle between Pressure and Gravity . As imbalances are reached, the star is driven to find a new Energy source. ... Pressure and gravitational forces are equal, the star is stable and its core is sufficiently hot to fuse Hydrogen into Helium More about main sequence stars . ... The luminosity generated by the core fusion of Helium into Carbon is far greater than the shell luminosity associated with the fusion of Hydrogen into Helium. ...

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• THE HUBBLE LAW JAVA APPLET
• Historical Cosmologies Historical Cosmologies

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 ...

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• The Face on Mars
• Current Solar Wind Conditions
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asncombine -- Process and combine images in one or two NICMOS associations asncombine association . ... set to yes to include error planes in co-added images error. background . ... This is useful to use different background subtractions for different images. fheader . set to yes in order to multiply the background by the value of keyword "factor" in the image header. ... Set to yes to use quadrants statistics save in the image header from previous runs of asncombine. regquad1 . ...

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• Space Telescope-European Coordinating Facility
• The STScI NICMOS Calibration Pipeline
• NICMOS Data Calibration and Analysis

This WWW form allows the user simplified access to images produced by the NRAO/VLA Sky Survey (NVSS). This service determines which NVSS image is desired based on a celestial position and returns either the image directly or a Web page with a link to the file. ... The NVSS Postage stamp (small FITS file) server can be used to obtain images with other geometries.) ... Web browsers use external viewers to display files like FITS images which they do not understand. ...

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• Using casata (i.e., how to get it without revision control!) Bojan Nikolic web
• VLSS Image ftp service Documentation Help for VLSS Image ftp service

T he Siding Spring Survey (SSS) is a Near-Earth Object search program that utilises the 0.5-m Uppsala Schmidt Telescope at Siding Spring Observatory, N.S.W., Australia. ... The mission of the Siding Spring Survey is to contribute to the inventory of near-earth objects (NEOs), or more specifically, the potentially hazardous asteroids (PHAs) and comets (PHOs) that may pose a threat of impact and thus harm to civilization. ... Based on the CSS Mission page . ... Siding Spring Survey Main Page . ...

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• Mike Bessell, MSSSO - Images
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So you have downloaded the latest super-duper, all-doing, nice-looking plug-in for The Gimp, but you don't know how to actually plug it in. ... If your plug-in is one which does not require libraries other than libgimp (The Gimp's plug-in library) and libc (the standard C library; most C programs need this), that's all there is to it. ... To avoid having to add an entry for each new plug-in which requires the math library, you can look for the lines in the Makefile which look like this: . ...

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• Configuration Options
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• APOD: 2003 December 5 - Startling Star V838 Mon

Russian SHAREABLE DATA CENTER Institute of Solar-Terrestial Physics SB RAS . ... To improve the quality of ionograms and to carry out on automatic ionogram processing we have developed a special software, which can be arbitraly devided into the following main parts: . ... Ionogram processing software on the basis of image processing; . Interactive ionogram processing software. ... Here we present ionogram samples for different kinds of chirp sounding . ... Capabilities and samples | ...

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• East Siberian Center for the Earth's Ionosphere Research. VS data on-line
• East Siberian Center for the Earth's Ionosphere Research. Databases.

According to the # 7.1. of the Acting Statutes/Regulations on the International Astronomy Olympiad there should be an Authorized National Representative (Astronomical) Organization (ANRAO) in every participating state: A national astronomical society, a department (section) of the EAAS or IAU in the state, a leading observatory, an astronomical department of a leading university, a ministry of education or another appropriate competent institution. ...

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• International Astronomy Olympiad: Personal data questionnaire
• Institutes of Chernogolovka
• Astronomy: Olympiad of Scientific Centres: Institutes of Chernogolovka

... Apache HTTP Server Version 2.4 . Apache > HTTP Server > Documentation > Version 2.4 > Virtual Hosts . ... This document describes how to efficiently serve an arbitrary number of virtual hosts with the Apache HTTP Server. A separate document discusses using mod_rewrite to create dynamic mass virtual hosts. ... Adding virtual hosts is simply a matter of creating the appropriate directories in the filesystem and entries in the DNS - you don't need to reconfigure or restart Apache. ...

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• Procedures for Observations
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• The Face on Mars

NAIC Guidelines for ALFA Consortia Proposals (Draft May 7, 2004) R. L. Brown At the May 6, 2004 teleconference of the ALFA System Advisory and Planning (ASAP) committee several issues were identified as being critical to informing the process by which guidelines are developed by NAIC for handling the ALFA consortia proposals. ... Planning for shared-risk precursor observations, a primary purpose of which is to demonstrate the readiness of the survey teams to conduct their planned survey observations. ...

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• http://www.naic.edu/~phil/calsbw/sbwresonances.html
• http://www.naic.edu/alfa/memos/general/NAIC-Guidelines-for-ALFA_May12.pdf
• http://www.naic.edu/~phil/usrproj/a1659/aug03.html

OFICCIAL PRESS RELEASE . ... At S.P. Korolev Rocket and Space Corporation Energia the regular session of the Board of Chief Designers on the Russian Segment of the International Space Station (ISS) was held under the chairmanship of N.N. Sevastianov, President, General Designer of RSC Energia. ... Charge RSC Energia (N.N. Sevastianov) with submitting this decision to the Federal Space Agency and higher-level state structures. ... Official WEB-site of S.P.Korolev RSC Energia . ...

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• PRESS RELEASE - S.P. KOROLEV ROCKET & SPACE CORPORATION ENERGIA
• INTERNATIONAL SPACE STATION