... The following factors that affect the final accuracy of the reflecting surface in ground conditions were considered to be the most important: the accuracy of manufacturing of the central mirror and lobes , the accuracy of their installation on the spacer , the accu racy of systems of weight unloading (the weight unloading of lobes during their manufacturing and assembly of the reflector as a whole), the ... Stan dard deviations of lobe surfaces were 0.13­0.21 mm. ...

Meade Forum Message . Forums: . ... Eyepieces ћ Meade ћ Misc. ... Discussion Forums | Meade Equipment Discussion | Post . ... Ebay . ... Post Message | ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... Pulkovo Observatory Collection consists of astronomic photographic negatives (plates) dated from 1893. ... Pulkovo Normal Astrograph (plate size 160x160 mm. , scale 59''.56 in mm.) under observational programs: minor planets, major planets, globular and open star clusters, planetary nebulas, selected areas with galaxies, double and multiple stars, bright stars, nova and supernova, comets, Selected Areas, Catalogue of Geodetical Stars (CGS), Photographic Catalog Faint Stars(FCFS) . ...

... Gallery . ... The PDS and some air-conditioning relics, reaтАж . Sidebar Left . Sidebar Top . No Sidebar . Sidebar Bottom . Sidebar Right . ... Title: The PDS and some air-conditioning relics, ready for junking. 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. ...

GENERAL INFORMA T ION ABOUT How does my LOMO® Night Vision Device Work? ... LOMO® NIGHT VISION DEVICES & FAQs When using a Night Vision Device, you are actually looking at an image that is projected by the intensifier tube located inside the unit (Fig. ... Light enters the Night Vision Device through the objective lens and hits the photocathode in front of the intensifier tube. ... Infrared (IR) Illuminator Microchannel Plate (Gen.2 Only) When do I use my LOMO® Night Vision Device? ... Fig. ...

The general formulation of the problem of light scattering (diffraction) is rather simple. The field is incident on a scatterer of the volume , and creates the field inside the scatterer and an additional (diffraction) field outside it. ... Despite the simplicity of the scheme, a concrete solution of the problem essentially depends on the geometry of the scatterer and its structure. ...

Astronotes Armagh Planetarium's Stellar Blog! ... This image combines orbital imagery with 3-D modelling to show flows that appear in spring and summer on a slope inside Mars' Newton crater. ... Warm season flows on a slope in Newton Crater, possible evidence of salty liquid water active on Mars today. Image credit: NASA) . ... Frozen water is common on and under the surface of Mars but these images are the best evidence to date for the presence of liquid water on the Martian surface today. ...

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... October 6, 09:00 09:40 . Jorge Melnick (ESO) . ... We present a statistical and temporal analysis of the ground meteorological properties recorded at the five selected sites for hosting the European Extremely Large Telescope (EELT). ... Marc Sarazin (ESO) . The organization and development of the E-ELT site testing campaign by ESO are described. ... The E-ELT Site Testing activities in northern Chile and Argentina are reviewed, and pioneering explorative campaigns are illustrated. ...

... Tonight's Sky . ... SUN MOON MERCURY VENUS MARS, JUPITER SATURN . ... Mars . ... An artificial comet holds secrets to Earths life . ... Astronomy for Kids . ... Rover finds conditions once suited for ancient life on Mars . ... We have characterized a very ancient, but strangely new 'gray Mars' where conditions once were favorable for life," said John Grotzinger from the California Institute of Technology in Pasadena. ... Only registered members of Astronomy.com are allowed to comment on this article...

Crater Gassendi . ... I made this drawing was made on the 26th of november 2001. If you compare this one with the previous drawing of Gassendi (below) the differences are clear. ... This drawing was made on the 28th of september 2001. After nearly a full month without observations I had a one hour gap between the thicker clouds. ... This drawing was made on the 29th of august 2001. ... This drawing was made on the 27th of august 2001. ... This drawing was made on the 25th of august 2001. ...

Observations of stellar magnetic fields is a powerful method to study of different non-stationary effects in our Galaxy and behavior of plasma under astrophysical conditions. ... Investigations of stellar magnetism by means of Zeeman measurements of polarized spectra of different stars are one of the most significant observational programme on the 6-m telescope BTA of our Observatory. ... Laboratory for the Stellar Magnetism Study . ... Laboratory for the Stellar Magnetism Study of SAO of the RAS . ...

21.10 news 887 MH 19/10/04 2:15 pm Page 887 news Russians fear privatization of state labs Bryon MacWilliams, Moscow Senior officials in Moscow are attempting to reassure Russian scientists about details of a planned reform, under which many hundreds of the country's state research institutes could lose their government funding. ... We agree that Russian science does need reform," says Boris Stern, a particle physicist at the academy's Institute for Nuclear Research in Moscow. ...

There are many ordinary/partial differential equations/systems describing various phenomena in physics, mechanics, chemistry, biology, sociology, etc. ... Prerequisites: 1 semester "Advanced Calculus", 1 semester "Linear Algebra". Optional: 2 semester "Advanced Calculus", 2 semester "Linear Algebra", 1 semester "Functions of Complex Variables", elements of the functional analysis and the ordinary differential equations theory. ... Laplace transform for linear differential equations . ...

The success of any ALMA phase-calibration strategy, which incorporates phase transfer, depends on a good understanding of how the atmospheric path delay changes with frequency (e.g. Holdaway Pardo 2001). ... We find the wet dispersive path delay becomes a significant fraction ( 5 per cent) of the non-dispersive delay for the high-frequency ALMA bands ( 160 GHz, Bands 5 to 10). ... The full text of the memo is available here . ... Dispersive path delay . 2009 Emily Curtis ...

... Allows webmasters to configure the response of Apache to some error or problem. Customizable responses can be defined to be activated in the event of a server detected error or problem. e.g. if a script crashes and produces a "500 Server Error" response, then this response can be replaced with either some friendlier text or by a redirection to another URL (local or external). ... New behavior . ... redirect to a local URL, or . ... Each new variable will have the prefix REDIRECT_ . ...

Winer Observatory P.O. Box 797, Sonoita, Arizona 85637-0797, USA . ... Observing Conditions RainWise Temperature RainWise Humidity RainWise Pressure RainWise Wind Direction RainWise Windspeed RainWise Highwind RainWise Rainfall Rainwise Wind Chill Temperature Siple Wind Chill Temperature Dpm7885 Temperature Dpm7885 Pressure Sqm Sky Brightness AAG Sky Temperature AAG Ambient Temperature AAG Temperature Split AAG Adjusted Temp Split ... All rights reserved. ...

... ASRAS HOME . Radio Astronomy . ... About ASRAS . ... Our Observing Site . ... 2015 Mees Tour Guides . ... We're offering Regular Tours (a presentation on astronomy geared to a general audience, followed by a tour of the observatory and (hopefully!) observing of several objects, which may include the Moon, planets, nebulae, star clusters and perhaps galaxies), and Kids' Tours (a more interactive presentation specially aimed at youngsters plus the observatory tour and observing) as in prior years. ...

... SIXA FM ACCEPTANCE TESTS . ... In accordance to plan of the Acceptance Tests for Flight Models which was agreed in March 2000 in Moscow, the Acceptance Test of SIXA FM was carried out between 28 August and 2 September at VTT Automation, Finland. ... GOUCH for electronics box of SIXA-FM, Remark: not updated after changes made in 1994. ... Ground Test Program of SIXA-FM. ... Integration Test of SIXA FM, BIUS, ISS, DSS, and MPMI . ... Test data were written to MPMI, DSS-F, DSS-S and GSE SIXA-FM, . ...

... SMIS ] . noise temperature of the low noise amplifier less than 100 K . automatic frequency and polarization adjustment of the received signal . double transform of frequency . power supply: single phase, 220 V, 50 Hz . power consumption: less than 30 Wt . the unit measures: 470 x 300 x 130 mm . weight: less than 10 kg . ... Back to SMIS Home Page . ...