... Apr 14, 2016 - Monthly Meeting . ... The Amateur Telescope Makers of Boston, Inc. ATMoB) is an astronomy club devoted to telescope making, observing, and studying the heavens. ... CURRENT MOON . ... April Sky . ... Lyrids Meteor Shower . ... Sources: NASA JPL Space Calendar , StarDate Online , Sky Telescope , Harvard-Smithsonian Center for Astrophysics , RASC Observer’s Handbook , Abrams Planetarium Sky Calendar and Astronomy Magazine . ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

M1 image More About M1 Nice Color Picture . ... M16 image More About M16 HST image . ... M31 image More About M31 Nice Color Picture . ... M42 image ; M43 image More About M42/43 Nice Color CCD Picture . M51 image More About M51 Color Image of M51 M51 Supernova . M57 image More About M57 Nice Color CCD Picture Very Deep M57 Image . ... M81 image More About M81 M81 Supernova Ultraviolet Image of M81 More about Ultraviolet Imaging . M82 image More About M82 M82 False Color M82 True Color . ...

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... Gallery . Siding Spring Observatory by day - Tim WetherтАж . Siding Spring Observatory's Anglo AustraтАж . Sidebar Left . ... Title: Siding Spring Observatory's Anglo Australia Telescope (inside from visitor's gallery) . ... File name: siding spring anglo australia telescope inside.jpg . ... Siding Spring Observatory's Anglo Australia Telescope (inside from visitor's gallery) NOTE: All images are copyright and must not be reproduced or mirrored in any form without written permission. ...

... ESO is building what will be the World's largest optical telescope array, The Very Large Telescope (VLT). The VLT Project organisation is responsible for the design and construction of the Unit Telescopes, including enclosures, optics, adapter-rotators and coating unit. ... Unit Telescopes Overview - This page is outdated, an update is in process. ... Secondary mirror (M2 Unit) - This page is outdated, an update is in process. ... Coating Unit - This page is outdated, an update is in process. ...

... Observing . ... Solar Observing . ... April 3 (SUN) - Solar Observing, Central Park , Manhattan . ... APRIL'S SKY . ... Lecture Series at the American Museum of Natural History The Amateur Astronomers Association is proud to present an astronomy lecture series from October through May each year for our members and the .. ... The€аAmateur Astronomers Association of New York€аwas organized in 1927 to promote the study of Astronomy, emphasizing its cultural and inspirational value. ...

Proceedings of the Particle Physics and Early Universe Conference (PPEUC). For this paper: postscript PPEUC CMB index 1 Introduction.. ... Combining measurements of the thermal Sunyaev--Zel'dovich effect with X-ray data allows calculation of a direct, physical estimate of Hubble's Constant ( ) without the need for distance-ladder-type arguments. ... 1 Introduction . ... 3 Calculating Hubble's Constant . 4 Errors In Determination of . ... PPEUC Proceedings . Fri Jun 27 15:29:33 BST 1997 ...

... In laboratory the design and a manufacturing techniques mirror aspherical optics are developed ("fokon", ellipsoid, aspherical mirror).Such optical elements are made of widespread aluminium alloys on the standard equipment without use diamond turning. ... Using: optical blocks of not image optical devices for transitions, collimation, focus (concentration) radiations in a wide spectral range from UV to IR. Focusing and collimation of light; . ... circle aperture/ring aperture; . ... Back Forward . ...

1 - entrance slit; 2 - off-axis collimator; 3 - flat mirror; 4 - grating (24 deg, 600 gr/mm); 5 - echelle grating (63.5 deg, 37.5 gr/mm); 6 - echelle grating (63.5 deg, 75 gr/mm); 7 - prisms (A=45 deg); 8 - corrector; 9 - flat mirror; 10 - spherical mirror; 11 - CCD camera . CEGS permits us to obtain high S/N spectra (100) of stars up to 7th magnitude in the "high-dispersion" mode (R~40000). ... Coude Echelle/Grating Spectrometer (CEGS) designed by F.A.Musaev (Sov. ...

Blackholes Forum Message . Forums: . ... Discussion Forums | Blackholes I | Post . ... It Happens Without The Mirror . ... Post Message | ... Posted by Clerk on February 1, 2005 03:59:23 UTC . ... They need the mirror.... - duordi - February 2, 2005 - 19:04 UTC . ... 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" . ...

... Tonight's Sky . ... Stephen James O'Meara . ... James Webb Telescope mirrors chill out . ... Artist's rendition of the James Webb Space Telescope. ... The first of 18 mirror segments that will fly on NASA's James Webb Space Telescope arrived this week at the Marshall Space Flight Center, Huntsville, Alabama, to begin preparations to meet the extreme temperatures it will encounter in space. ... This drawing compares the sizes of the Hubble Space Telescope and James Webb Space Telescope primary...

... Superb optical performance coupled with time proven computerized pointing and tracking has made the LX200 ACF series a best-seller in the high-performance telescope class. ... Meade's revolutionary LS LightSwitchтДв series of telescopes use advanced technologies to do what no other consumer telescopes have done before: take all the hassle out of using a telescope. ... Meade Series 5000 2" Enhanced Diagonal Mirror with SC adapter . ... Meade Series 5000 2" Enhanced Diagonal Mirror #07680. ...

... The predictive power of current models (the so-called meteor forecasting) has given us the exact timing of the Leonid storms of 2001 and 2002 to the nearest hour and are now used to predict the arrival times of major annual showers such as the Perseids . ... Towards this goal, the Observatory has installed a sky-monitoring system, consisting of one medium angle (MA) and two wide-angle (WA) video cameras linked to software designed to detect motion. ... Bright Taurid Meteor . ... Meteors on Mars . ...

... Purpose: The purpose of this test is to determine the degree to which the COSTAR mirrors have reduced the throughput of the GHRS, particularly at wavelengths below Lyman-alpha. ... However, the usual series of wavelengths on both Side 1 and Side 2 will be observed so that this program is also a sensitivity monitor close-out. ... This test will execute once only during Cycle 6, at the end of the Cycle. ... Also, we will need to carefully consider how these new data compare to older sensitivity tests....

The sections <Directory> , <Location> and <Files> can contain directives which only apply to specified directories, URLs or files respectively. Also htaccess files can be used inside a directory to apply directives to that directory. ... The order of merging is: . ... If multiple <Directory> sections apply to the same directory they are processed in the configuration file order. ... Using the options in question is only possible inside a <Directory> section (or a .htaccess file). ...

RTT150 . Russian-Turkish 1.5-m Telescope . ... Telescope has two main foci (Cassegrain and Coude ) and allows to use six optical systems based on Ritchey-Chretien system with a common main mirror . At present scientific observations are being performed at the Cassegrain focus in main optical scheme with focal ratio of 1:7.7. ... flat . ... To use the Coude focus the removable flat diagonal mirror is also needed in the crossing point of declination axis and main optical axis of telescope. ...

Modules | ... Apache HTTP Server Version 2.2 . Apache > HTTP Server > Documentation > Version 2.2 > Modules . ... Allows "anonymous" user access to authenticated areas . ... This module provides authentication front-ends such as mod_auth_basic to authenticate users similar to anonymous-ftp sites, i.e. have a 'magic' user id 'anonymous' and the email address as a password. ... Anonymous . ... Directory /foo> AuthName "Use 'anonymous' & Email address for guest entry" . ... Anonymous user [ user ] .. ...

Modules | ... Apache HTTP Server Version 2.2 . Apache > HTTP Server > Documentation > Version 2.2 > Modules . ... Allows "anonymous" user access to authenticated areas . ... This module provides authentication front-ends such as mod_auth_basic to authenticate users similar to anonymous-ftp sites, i.e. have a 'magic' user id 'anonymous' and the email address as a password. ... Anonymous . ... Directory /foo> AuthName "Use 'anonymous' & Email address for guest entry" . ... Anonymous user [ user ] .. ...

The telescope configured for measurements of exoplanet transit light curves is seen from the north side in this May 2010 photo. Lower portions of the dome have been insulated to reduce daytime heating by radiation from the warm metal dome. ... The interior of the dome is seen soon after the encoder upgrade in February 2007. ... Karen Collins, a research astronomer specializing in exoplanets, helped with the telescope installation in August 2006. ... kielkopf at louisville dot edu . ...