... The then president of the Society, Mr. Robert Burke, appointed a committee of eight or ten members, most of whom had made smaller mirrors, as an instrument committee, with Mr. Thorpe as chairman. ... Seriously, the best practicable solution seemed to be to build a machine to do the grinding and polishing. ... It was decided to grind the edges of the mirror to make it truly circular, as the rough cast glass was some 3/8 inch longer on one diameter than on the other. ...

MESSIER 5 AND ITS VARIABLES `A noble mass, refreshing to the senses after searching for faint objects' Admiral Smyth The oldest known stars have survived chiefly in the rich and wonderfully symmetric formations called globular star clusters. ... 2] Charles Messier revealed the globular cluster on May 23, 1764. ... The globular cluster itself is magnificient and granular at 60x. Individual small stars are scattered around the edges, and one or two of them can exceed the others in brightness. ...

... Basic algorithms for the production of stellar photometry from CCD observations are described and reviewed. ... The problem of doing accurate stellar photometry with calibrated charge-coupled device (CCD) data amounts to that of condensing the intensity values of hundreds, thousands, or even millions of picture elements (pixels) into a list containing the magnitude and position of each star on the CCD image. ... Center an aperture of N A pixels on the star. ... PIXEL.LT.PEAKMAX)) THEN BINGO = .TRUE....

... 1 - 5 m HgCdTe Detector Material . Hybridization of 2048 x 2048 Arrays . ... Options for Extension to Visible Wavelengths . ... MBE HgCdTe Capability at Rockwell Science Center . ... Over the last two decades, dramatic improvements in the performance of 1 - 5 m infrared detector materials combined with the leap from single detectors to million pixel arrays have led to a billion-fold improvement in our ability to observe astronomical sources at these wavelengths. ...

... The following thoughts have occurred to us recently regarding the 6x5 ccd camera array for the Cosmological Survey Telescope. ... Heat is conducted away from the ccd via a copper cold finger to a cold plate which is shared by all 30 ccd modules. ... Located at the ccd locations on the cold plate are spring loaded platforms which are thermally coupled to the cold plate with copper braid (not shown). ... The ccd can, the window, the filter assembly, and the ccd assembly is called the ccd module. ...

OptInt PmWiki : Pm Wiki / Notify . ... The notify.php script allows a site administrator to configure PmWiki to send email messages whenever pages are changed on the wiki site. ... notify=alice@example.com . ... The SiteAdmin.NotifyList page can contain multiple "notify=" lines to cause notifications to be sent to multiple addresses; the "notify=" lines can be concealed by placing them inside of an (:if false:) conditional section on the page. ... notify=alice@example.com squelch =86400 . ... page: . ...

... The Search for Stellar Origins from Antiquity to the 21st Century . Dr. Charles Lada, Harvard-Smithsonian Center for Astrophysics . ... In this talk, "The Search for Stellar Origins from Antiquity to the 21st Century," Dr. Lada will explore the question of why it took so long for star formation to become an active branch of astronomical research. ... ground-based and space-based telescopes. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

... Research School of Astronomy and Astrophysics ( RSAA ) . Research School of Earth Sciences ( RSES ) ( Earth Chemistry ) . Australian National University ( ANU ) . Research . ... Media ( Media coverage of research and appearances in the media, downloadable .pdf, .mp3 and .flv files) . email: charley@mso.anu.edu.au . Dr Charley Lineweaver . ... Research School of Astronomy and Astrophysics . ... Research School of Earth Sciences . ... Back to the Astrophysics & Optics homepage. ...

... ARTICLE: The Adventurous Search For The Astronomical Unit . ... Kepler himself had suggested to use the rare occasions of Venus transiting (crossing) the solar disk to measure our distance to the planet. ... Due to the orbital inclination of Venus against the ecliptic of 3.5°, a Venus transit is so rare that it happens only at intervals of 121.5 years, 8 years, 105.5 years, 8 years and so on. ... Crabtree witnessing the transit of Venus 1639 . ... Transits of Venus - The Quest for the Solar Parallax...

Winer Observatory P.O. Box 797, Sonoita, Arizona 85637-0797, USA . ... Winer Observatory gratefully acknowledges the generous support of those listed below. ... We thank our donors and hold them up as models of how corporations in America can behave responsibly in the communities in which they do business. ... Telescopes, parts, and accessories . ... 100,000 . ... Hughes Missile Systems . ... Miscellaneous electronics . ... Terra Universal, Inc. ... EFI Electronics Corp. ... 2013 Winer Observatory. ...

... The Triplet Lenses are manufactured by LOMO PLC of St. Petersburg Russia, one of the world's largest and most advanced optical manufacturers. ... This day the official web site of St.Petersburg company, lomo.ru, became accessible. ... LOMO VOTING PAPERS PROCESSING COMPLEXES TESTED SUCCESSFULLY . On December 16, 2001 during elections to Legislative Assembly of Leningrad Region, Russia, pilot pieces of the new Voting Papers Processing Complex created at LOMO PLC were used for the first time. ...