Primary Surface Errors, East Half Of Reflector Photos Taken October/November 2001 2500 2000 1500 1000 500 -10 -5 5 10 mm. Histogram of 19489 points, 132 points off scale. Width of fitted gaussian: 1.8 mm. Included tieback points cover the entire reflector.

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• optics
• pntErrsNovOct10

Sloan Digital Sky Survey Telescope Technical Note 19970527 Walter Siegmund . ... Pointing Error Budget . ... The interleaved strips and adjacent stripes overlap about 1 arc minute. ... However, a 2-D pointing accuracy of 3 arc seconds RMS leads to acceptibly uniform overlap and minimises the number of cases that require special handling (Table 3). ... A guide fiber bundle diameter of 16.5 arc seconds and a pointing accuracy of 3 arc sec RMS results in 99% initial success in acquiring guide stars. ...

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• Astrophysical Research Consortium - Apache Point Observatory
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... Direct data transmission rate (Mbps) . ... the density of electron fluexs with energies in four bands from 0.04 MeV to 1.7 MeV; . ... sensor (TV, IR) data and heliogeophisical information (HGI) transmission to data receiving and processing centers at a rate of up to 2.56 Mbps; . ... 1.76 GHz - TV- and heliogeophysical information and DCLI's data transmission to data receiving and processing centers; . 7.5 GHz - TV- and heliogeophisical data transmission to data receiving and processing centers; . ...

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... Liyong Liu (NAOC) . Site testing on seeing conditions of the astronomical observatories over China are briefly reviewed, including Xionglong station of NAOC, Gaomeigu station of Yunnan Observatory, Delingha station of Purple Mountain Observatory. ... PDF [3.0€аMB] October 8, 09:55 10:20 . ... In this paper, we will review the site survey activities in the past years, and present the site-testing results on the Oma site, including cloud cover, seeing, water vapor, transparency and sky brightness. ...

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• General information

... HST . ... Data . ... News and . ... HST Peer Review Process . ... HST Overview . ... Retrieving HST Data . ... STIS/GHRS/FOS | October/November 2006 +----------------------------------------------------------+ Visit the "New in the Last 45 Days" section of the STIS website at http://www.stsci.edu/hst/stis for new information about STIS. ... New Reference File Deliveries A number of new STIS calibration reference files have recently been delivered as part of the STIS calibration closeout effort. ...

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• Aberration Correction
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Next: The Schedule File Up: THE SCHED USER MANUAL Version Previous: Satellite Tracking Contents . This chapter covers the main input files that SCHED reads. ... See the SCHED Input and Output Files section of this manual for brief descriptions of the files and pointers to the standard versions. ... Summary List of SCHED Parameters . ... List of Frequency File Parameters . Setup Files . Standard Setup Files . ... Summary List of Setup File Parameters . Details of Setup File Parameters . ...

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• WCSLIB: wcslib.h Source File
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• Release of 22 Feb 1996

... BOM2 and the basic block of solar limbograph including pointing and control systems ? ... Fine tracking platform (FTP) for Sun tracking by the sight axis of the limbograph; . ... Tracking system frequency ? ... Controller of the control system and solar fine tracking of the sight axis of the limbograph; . ... The basic relative construction of the elements and instrumental blocks of the "Astrometria" space experiment is shown on the block diagram of units within the complex of SL-200 solar...

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... Apache HTTP Server Version 2.4 . ... Although the Apache HTTP Server provides generic error responses in the event of 4xx or 5xx HTTP status codes, these responses are rather stark, uninformative, and can be intimidating to site users. ... Additionally, a set of values are provided, so that the error document can be customized further based on the values of these variables, using Server Side Includes . ... Customizing Error Responses . ... ErrorDocument 500 http://error.example.com/server_error.html...

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... elcplot (elcplot-2.5) [xmmsas_20080701_1801-8.0.0] . ... Subroutine elcplot Recover parameters (File names, Device type, Binning factor, Output file, x-axis units) Read source time series FITS file : Get dataset and table. ... Recover all light curves included in table Net source rates and errors & background rates and errors are recorded in arrays of dimension Nlightcurve * Nbins. ... Draw net source and background time series and GTIs on different panels. ... Close plot. End subroutine elcplot . ...

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... Short reports. ... For the countries, starting their activity at the International Astronomy Olympiad (see the Supplementary Instructions N 3 ), the requirements for the short report are not strong. ... According to the information above the regular deadline for receiving the short reports of Nationals Olympiads of the current year (with a set of all problems used on the National Olympiads) is defined as 13 plus 5 = 18 weeks before the Olympiad: July 04 , 2009. ... Personal data for visas. ...

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• XVI International Astronomy Olympiad, information before Olympiad
• XV International Astronomy Olympiad
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... Listed below are questions submitted by users of "The Great Magnet, the Earth" and the answers given to them. ... In "The Exploration of the Earth's magnetosphere" on the magnetic environment of the Earth in space (a few Q duplicated here) . ... 11) Magnetic Shielding . ... 51) Can electricity be generated from the Earth's magnetic field? ... 9) Measuring Earth's magnetic field . ... 6) Reversals of the Earth's field (4 queries) . ... 42) Could generated electricity affect Earth's magnetic field? ...

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• Main research and development work completed in 2009 and ready for
• "Stargazers" and National Science Standards
• Main results of the experimental and theoretical research completed in 2011

... Tiny Tim has been used for generating Hubble Space Telescope ( HST ) point-spread functions (PSFs) for deconvolution, algorithm testing, proposal planning, and optical studies. ... Tiny Tim is a stand-alone program for simulating HST PSFs as viewed with the on-board imaging cameras (WF/PC-1, WFPC2, FOC, COSTAR/FOC). ... The measured aberrations for FOC f/96, WF/PC-1 PC6, WFPC2, and COSTAR/FOC are used by Tiny Tim . ... Figure: FOC f/96 observed and Tiny Tim model PSFs (pre-COSTAR) at 253 nm. ...

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• ADASS VIII Cover Illustration
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... It was designed to observe the solar wind approaching Earth, from a position near the Lagrangian point L1, and it is part of the International Solar-Terrestrial Physics (ISTP) Initiative . ... The original plan called for "Wind" to approach its final station over two years, undergoing two close encounters with the Moon to boost its speed. ... If however the object is moving , the encounter is not symmetric, and in the end the spacecraft may have gained or lost speed, depending on its trajectory. ...

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• Chronology of early astronomy,mechanics and spaceflight
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The 2.6 kernel contains a long list of changes which affect device driver writers. As part of the task of porting the Linux Device Drivers sample code to 2.6, your humble LWN Kernel Page author is producing a set of articles describing the changes which must be made. ... November 25, 2003) The entire set of articles has been updated to reflect the 2.6.0-test10 kernel. ... Timekeeping changes (November, 2003; 2.6.0-test9); changes to how the kernel manages time and time-related events. ...

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... Archives . ... my first AAS. ... Q] systematic error . ... He rewrote the EM algorithm to include measurement errors in redshifts. ... I encouraged him to talk statisticians to characterize and to generalize his measurement error included likelihoods, and to optimize his EM algorithm. ... Tags: bias , bimodality , EM algorithm , LF , likelihood , measurement error . ... Comment ( RSS ) | ... Entries RSS . Comments RSS . ... Chandra Blog . ... Entries (RSS) and Comments (RSS) . ...

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Canadian Paper Money] . ... Detailed reference which covers Canadian government paper money from the French playing card money of the 17th century to the present Birds of Canada issue.љ ... Also includes section on special serial numbers and paper money errors. ... 19.95 CDN --- E-Mail to reserve a copy. POSTAGE (CDN$) Canada United States International ------------ --------------- --------------- Regular $2.00 (1 wk) Air $5.00 (1 wk) $8.00 (1-2 wks) Surface $3.00 (2-3 wks) $4.00 (6-7 wks) . ...

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Supernova 2009js in NGC 918 . This page is devoted to information on Supernova 2009js in NGC 918 . Basic information on this SN, including the last reported brightness, on this Supernova can be found on the main page . Information on the original web pages for many of these images can be found on the updates and links web pages. Discovered independently by Lick Observatory Supernova Search (USA) and Koichi Itagaki (Japan). ... 2009/10/11.44 . 17.2 . ... Joseph Brimacombe . ...

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Astronomy Picture of the Day . ... 10.09.1995 . ... Credit Copyright: NASA , HST , WFPC 2, H. Richer ( UBC ) Explanation: The circled stars in the above picture are from a class that is hard to see in the cosmos: white dwarfs. ... It is hoped that studying how these stars cool could lead to a better understanding of their ages, of the age of their parent globular cluster, and hopefully even the age of our universe! ... September 1995 . ... 1995 1996 . ... U. Based on Astronomy Picture Of the Day ...

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• XWare > APOD

... March 25, 2006: Version 3.0.0 New control panel with an observing queue and a log Pointing to apparent position including proper motion precession and nutation to epoch of ... declination axis to polar axis non-orthogonality optical axis skew altitude- and azimuth-dependent mechanical effects encoder reference Control of telescope hardware August 20, 2006 Version 3.0.4 Modifications from Dan Azari adding features suported by the RC Optical Systems ...

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• http://www.astro.louisville.edu/software/sbig/xmccd-5.1/CHANGELOG
• http://www.astro.louisville.edu/software/sbig/archive/xmccd-4.1/CHANGELOG
• http://www.astro.louisville.edu/software/sbig/archive/xmccd-4.2.1/CHANGELOG

... Michael Collins (BGEN, USAF, Ret.) NASA Astronaut (former) . ... SPECIAL HONORS: Presented the Presidential Medal for Freedom in 1969 and recipient of the NASA Exceptional Service Medal, the Air Force Command Pilot Astronaut Wings, and the Air Force Distinguished Flying Cross. ... He served as backup pilot for the Gemini VII mission. ... Collins served as command module pilot on Apollo 11, July 16-24, 1969--the first lunar landing mission. ... This is the only version available from NASA. ...

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• Shuttle Press Kits
• Astronaut Bio: Dale A. Gardner
• Astronaut Bio: Charles Duke 05/94