... A three-cell test section roughly representative of the primary mirror was provided for this test by the Steward Mirror Lab. ... Additionally, the tests are intended to determine relative airflow vs. pressure drop characteristics for each of the air flow patterns so the results can be evaluated both as a function of flow rate and of pressure drop along the flow path. ... The bottom (top as installed) was cut out so it could close the chamber for heating and be removed for the cooling tests. ...

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• Primary mirror support
• lsst.mirrorCtrl: mirrorCtrl: Interface to Galil mirror controllers
• Astigmatism II

The Library of Medium Resolution Spectra . HyperLeda home | Documentation | ... The library is divided into different archive corresponding to the different datasets. ... They are stored as tar files. ... cumulus . ... The archive will be divided in subdirectories in order to avoid problems with some unix commands which have a limitation in the size of the argument or number of files. ... The file name is the file number in this dataset The file naming convention has the form: LYYMMOBSj/nnnn . ...

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• Alphanumerics

Blackholes Forum Message . Forums: . Atm ћ Astrophotography ћ Blackholes ћ Blackholes2 ћ CCD ћ Celestron ћ Domes ћ Education . ... Discussion Forums | Blackholes I | ... There Are Two Different Situations Here! Forum List | ... Back to Thread Topics | ... www.astronomy.net . About Astronomy Net | Advertise on 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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• They Need The Mirror.... - an Astronomy Net Blackholes Forum Message

... Views of the Solar System is maintained at several different sites on the Internet. ... This is the primary site for "Views of the Solar System." ... This site is maintained by Lee Burnside ; see also their home page . ... You are permitted to set up a Views of the Solar System mirror site as long as you follow the following guidelines: Views of the Solar System may be distributed on the World Wide Web as long as it is used for non-profit applications and the pages are not modified. ...

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• Explaining the Sundial

... Views of the Solar System is maintained at several different sites on the Internet. ... This is the primary site for "Views of the Solar System." ... This site is maintained by Lee Burnside ; see also their home page . ... You are permitted to set up a Views of the Solar System mirror site as long as you follow the following guidelines: Views of the Solar System may be distributed on the World Wide Web as long as it is used for non-profit applications and the pages are not modified. ...

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... Both sets of objective transmission gratings consist of hundreds of co-aligned facets mounted to supporting structures on 4 annuli (one for each of the four co-aligned mirror pairs) to intercept the x rays exiting the HRMA. ... The two sets of transmission gratings, attached to the mounting structure are shown in Figure . ... An individual facet has 0.43-m-thick gold grating bars with 50% filling factor and 9920- period, resulting in 1.15-/mm dispersion. The HRC-S is the primary LETG readout. ...

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• The X-ray Optics
• AXAF-Chandra

Status of CCL: 09019:1 for the week of:09019 MAIN = Scheduled as MAIN INT = Scheduled as INTERLEAVER UPAR = Scheduled as Unattached PARALLEL APAR = Scheduled as Attached PARALLEL PLAN = Planned SU NOOF = SU not on Order Form POOL = SPSS Selected Pool SU HRS3 = HRS Cycle 3 Pool SU FGS3 = FGS Cycle 3 Pool SU PSF = PSF Snap SU SNAP = Other ...

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• http://www.stsci.edu/spss/09068.status
• http://www.stsci.edu/spss/09033.status
• http://www.stsci.edu/spss/09124.status

... Classes . Files . ... Class List . ... casa . casa::SDWeatherHandler . ... include < SDWeatherHandler.h > . ... Definition at line 87 of file SDWeatherHandler.h . ... Definition at line 119 of file SDWeatherHandler.h . ... Definition at line 122 of file SDWeatherHandler.h . ... Definition at line 124 of file SDWeatherHandler.h . ... Definition at line 114 of file SDWeatherHandler.h . ... Definition at line 115 of file SDWeatherHandler.h . ... Definition at line 117 of file SDWeatherHandler.h . ...

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• casacore: casa::SDFITSHandler Class Reference
• PPTA Wiki | PmWiki / AccessKeys
• casacore: casa::SDObservationHandler Class Reference

... 2009 April 1 . Astronaut's Head Upgraded During Spacewalk . Credit: NASA . ... Now, as part of the planned upgrade of the International Space Station , an Expedition 18 astronaut has upgraded her own head. The Human Extended Analog Device 9000 was attached with only minor delays, making the astronaut's remaining spacewalk s over 40 percent more efficient. ... Happy April Fools' Day from the folks at APOD . ... About APOD | ... NASA Official: Phillip Newman Specific rights apply . ...

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• TNP Mirrors
• APOD: September 7, 1999 - Water Found in Space Rock
• APOD: 2008 April 21 - Bacteriophages: The Most Common Life Like Form on Earth

... At the summer date, at the chosen time, the Sun is high in the sky. at point S, while at the winter date, it is low in the sky, at point W. The shadow of the gnomon is always in the plane containing the Sun and the points A and B. If AB is a thin line, the shadow will also be a thin line, the intersection of this plane with the base of the sundial. ... Summer or winter, the shadow is therefore along the same line, the intersection of the above plane and the base of the sundial. ...

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• Radiation Belts
• The Exploration of the Earth's Magnetosphere"

... Clearing the library. Note the different flooтАж . Sidebar Left . Sidebar Top . ... Title: Clearing the library. Note the different floor levels. There were at least 4 different levels of underfloor in the library. Description: NOTE: All images and movies are copyright and must not be reproduced or mirrored in any form without written permission. ... NOTE: All images and movies are copyright and must not be reproduced or mirrored in any form without written permission. ...

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• Prior to mirror installation

Next: The Chemical Evolution of Up: Stellar Astrophysics Previous: Stellar Astrophysics . Simon Jeffery has used a novel camera attached to the William Herschel Telescope (WHT) to obtain the best light curves ever obtained for pulsating subdwarf B stars. These stars pulsate non-radially in several modes with different frequencies and enable astronomers to establish their overall properties and internal structure with unusual precision. ...

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• Terry Mosely's Bulletins
• Influence of Climate Variables on Tree-Ring Widths of Different Species

.

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• The SPHERE instrument attached to the VLT | ESO
• Another Job Well Done at Paranal | ESO
• SINFONI attached to YEPUN | ESO

... The system is not yet perfect. Some improvements for the future are listed in this section. The Compuscope filter wheel can be attached to the Lynxx camera. ... The filter wheel also has three empty positions. Additional filters would be useful. ... A second PC would also allow the filter wheel to be run in a different mode. Presently, the filter wheel is run in a pop-up window mode. ... A beta test version of new data Acquisition software, called The Sky is on order. ...

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• Region Markers
• Tom's POVRay Wall-Mounted Magnifying Mirror
• The AstroStat Slog Blog Archive different views

OptInt PmWiki . ... Edit Page | ... MROI Delay Line Design Contract . ... Access Keys . ... Note that this AKey+x access key only works this way on this page, because it is simply a shortcut for accessing the link that exists only on this page. The list of access key assignments in default PmWiki installations generally work throughout a site because links have been created in PmWiki skins and editing screens that incorporate access key parameters using the access key translation phrases. ...

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• OptInt PmWiki : Doc Man
• OptInt PmWiki : Requirements Review | History
• OptInt PmWiki : MROIFastTipTilt / Doc Man

... A Space Shuttle Before Dawn . ... An Iridescent Cloud Over Ohio . ... Why would a cloud appear to be different colors? ... M31: The Andromeda Galaxy . ... Andromeda is the nearest major galaxy to our own Milky Way Galaxy. ... This panoramic image tracing constellations in the southern sky shows off a beautiful vista toward the center of our Milky Way Galaxy. ... This colorful telescopic skyscape is filled with galaxies that lie nearly 250 million light-years away, the galaxies of the Perseus cluster...

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ATMoB "Double Star Award " Guidelines Purpose: To promote observing among the membership of the Amateur Telescope Makers of Boston ­ in particular, double, triple, and multiple stars. Introduction: Double, triple, and multiple stars are the "Rodney Dangerfields" of the night sky. ... W hile they can be observed under a variety of sky conditions, double stars ­ especially close ones ­ are best viewed on nights when the seeing is steady. ... The direction from a star to Polaris is north. ...

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• http://www.atmob.org/about/observing/awards/files/open_cluster_instructions_2011-02-01.pdf
• http://www.atmob.org/about/observing/awards/files/globular_cluster_instructions_2011-02-01.pdf
• http://www.atmob.org/library/member/bsmith/bobsmith.htm

. The bridge of gas (shown in green) stretches from the large galaxy at the bottom left to the group of galaxies at the top. A third nearby galaxy to the right also has a shorter stream of gas attached to it. The three insets show expanded views of the different galaxies and the green circle indicates the Arecibo telescope beam. Rhys Taylor/Arecibo Galaxy Environment Survey/The Sloan Digital Sky Survey Collaboration

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• SpaceX Dragon attached to space station in spaceflight first | Astronomy.com

Please enter the lightcurve file name and period search parameters: . Lightcurve file: . ... Apply the Heliocentric correction and convert all dates to Terrestrial Time (TT)? ... Also, the Heliocentric correction cannot be applied to such lightcurves. ... This period search service is also available at the mirror sites: Mirror 1 , Mirror 2 , Mirror 3 , Mirror 4 . You may download the latest source code distribution and install the period search service at your own web server. ...

20. Description