... Observing . ... Home Education Workshops at Adorama Astronomy Workshop: Observing Variable Stars from the City ? February 15, 2015 . ... Beyond New York City . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... Presented by€а Adorama €аFor the Amateur Astronomers Association of New York . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

... Stars . ... Cepheid variable stars have been known since the 18th century. ... Regularly brightening to a peak over days, weeks or months before fading these variable stars were remarkable curiosities to astronomers in past centuries.€а The term Cepheid is taken from the star Delta Cephei in the constellation of Cepheus, which was identified as variable€а in 1784 by the teenaged prodigy John Goodricke (1764-96). ... Tweets that mention Cepheids: Inconstant Stars which break the rules | ...

... During the analysis of the surveys carried out on RATAN-600, it was found that almost one fifth of the detected sources shows significant radio flux variations. ... We used the data from "Cold" radio surveys carried out with RATAN-600 in 1980-1994 to search for radio sources with significant flux variability. ... On possibility of detection of variable sources using the data of Cold surveys carried out on RATAN-600. ... Detection of Variable Sources Using the Data of "Cold" Surveys. ...

... The behaviour of the polarization efficiency (see Eq. ( 14 )) for non-absorbing and absorbing spheroids is shown in Fig. 11 for the case when a maximum polarization is expected (PF alignment, ). ... Figure 11: Polarization efficiency against for prolate and oblate spheroids with and , picket fence orientation, . The size/shape effects are illustrated. ... Figure: Polarization efficiency as a function of particle equivolume radius for prolate core-mantle spheroids with and , PF orientation, . ...

... Magnetic storms online . ... Geomagnetic activity forecast . ... September : 2015 . ... No magnetic storm is expected . From 10 September 2015 to 6 October 2015 the following magnetic storms and disturbances are expected: . October 05, 2015 geomagnetic disturbances . September 12, 2015 geomagnetic disturbances . ... September 21, 2015 geomagnetic storm of level G1 (minor) . ... September 20, 2015 geomagnetic disturbances 10 September 2015 - 6 October 2015 . 09.09.2015 . ...

... 2. (a) Metallicity function and relations between (b) metallicity and radial velocity, (c) metallicity and maximum distance from the Galactic plane,and (d)metallicity and variability period for RR Lyrae variables in the initial sample.The curve in the first graph is the maximum-likelihood approximation of the distribution using a sum of two normal curves with the indicated means,dispersions,and total numbers. ... next figure | privious figure . ...

... Редуктор фокуса CCD f/3.3/Field Flattener and Variable T-Adapter . ... Редуктор фокуса устанавливается на выходе оптической системы и применяется для уменьшения эквивалентного фокуса телескопа, при этом увеличивая общую светосилу. ... Данный редуктор используется при фотосъемке для уменьшения общей экспозиции на 80%. ... Зеркальные цифровые фотоаппараты PENTAX . ... Бинокли PENTAX и зрительные трубы PENTAX . ... Pentax.ru . ... Copyright PENTAR ї2004-2016. (бинокли, цифровые фотоаппараты, телескопы)...

The Russian Parliament will soon consider a bill that would restructure the Russian space program, 35 years after the launch оf Sputnik. ... But the legislation's most striking and controversial feature is a provision that would ban testing and deployment оf space weapons ? including anti-satellite weapons and space-based missile interceptors. ... A draft bill was written by a group of experts within the Moscow Space Club, several of whom now work on space issues with the Russian Parliament. ...

D.A. Alov, A.A. Kolchin, N.N. Kolesnikov, S.I. Rybchenko . Multilayer single crystal structure for infra-red optical coating. Abstract: . Chemical vapour deposition (CVD) is applied to grow the multilayer structure on CdSe proposed as a promising coating for infra-red (IR) optics. The coating is composed of alternately grown CdS and CdSe single crystal layers. The proposed coating characteristics are expected to be much better than those of the coatings produced by the sputtering method.

Turning the Camera Skyward . A reconfigured camera can take wide-field exposures of astronomical objects (constellations, the Milky Way, zodiacal light, moving artificial satellites, meteor showers, variable stars, etc.) to reveal much fainter objects and structures than seen by naked eye. ... This picture reveals objects more than 2.5 times fainter than can be seen by the naked eye, including not only stars but also the Orion nebula (M42), where new stars are being born. ...

... R.A. = 00h55m04s.86, Decl. = -37 41'43".7 . ... Variable star in NGC 1511 . ... Variable star near Pegasus 2001bn IAUC 8624 BV anon 2001bh 7622 K star ugc11635 2001dh 7482 M star ic5374 1999db 7227 QSO anon 1999dc 7227 AGN anon 1999cx 7210 AGN anon 1999cu 7210 AGN anon 1999bs 7141 cat var ugc11093 1998di 6982 dwarf nova anon 1993U 5818 QSO anon 1993V 5818 QSO anon 1992W 5517 M star mcg 8-23-96 1992X 5517 M star mcg 6-32-24 1991ap 5327 QSO anon 1989Z 5162 var ngc4013 1985J 4059 CV ugc6274 ? ...

Catalogue of eclipsing variables (CEV) is the world's principal database of eclipsing binary systems with available classification. CEV contains identifications, classifications, photometry, periods, eclipses data, spectral types, references and notes for 7179 systems. Format of the current CEV . CEV main table (~1.0MB) . ... List of systems, erroneously classified as eclipsing binaries in GCVS (they are not included in the CEV main table) Download all files as a single archive (~0.6MB) . ...

Тема : Хвостатые гостьи V (информация для наблюдения комет) .. Показать сообщение отдельно . ... Хвостатые гостьи .. ... после того, как ISON приплыл мимо нас, земля находится на орбитальной траектории, которая пройдет через след частицы кометы (тот, который ISON оставил позади, когда это приближалось к солнцу и это случайно встретит или вокруг 12 января - 15, 2014 . ... лучшее время наблюдения 22:00 LDT (Northern hemisphere 45њ North) .. - радиант расположен вблизи Al'dzhabkhakh (30-Eta Leonis, ? ...

Weekly Bulletin on Solar and Geomagnetic Activity Highlights on 15 - 21.04.2013 , Forecast on 22 - 29.04.2013, Carrington Rotations 2135, 2136 (21,5.03; 17,78.04.2013) SUNSPOT-FORMING ACTIVITY OF THE SUN REMAINED ON THE AVERAGE LEVEL. ... NEXT WEEK THE LEVEL OF SUNSPOT ACTIVITY IS EXPECTED TO BE THE AVERAGE. ... BY BY SOHO AND STEREO CORONOGRAPHS DATA THERE WERE OBSERVED SOHO 54 CME FROM WHICH ONE WAS THE TYPE OF "PARTIAL GALO III", AND SIX WERE THE TYPE OF "PARTIAL GALO II". ...

... Exposure Time Calculator (ETC) . Survey processing . ... VISTA is a 4-m class wide field survey telescope for the southern hemisphere, equipped with a near infrared camera (1.65 degree diameter field of view at VISTA's nominal pixel size) containing 67 million pixels of mean size 0.34 arcsec and available broad band filters at Z,Y,J,H,K s and a narrow band filter at 1.18 micron. A wide field visible camera, if constructed, could also be used on VISTA. ... Tile . ... ESO VISTA Public Surveys . ...

Course : Social media for civil society Lecturer: Olga Guzhva, Assistant Professor, Vice dean of International cooperation department of sociology, general editor of SCS Journal( www.scsjournal.org) The course consist of main thematic chapter as I theory and practise of e-Democracy, overview of channel of communication and social media , social media tools ( practical cases)) Theme /Modules Theme 1 Introduction to the course ... Discussion involves participants in active learning. ...

... Telescopes . LX850 Series . ... 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. ... The Meade 07348 Variable Projection Tele-Extender for LX Models requires the Meade 07182 eyepiece holder and offers different focal ratios while creating eyepiece-projection photography. ... The Meade 07348 Variable Projection Tele-Extender for LX Models comes with a 1-year limited warranty. ...

. This is a new popup window - close it when you are done . Submitted by Bruce Berger on 03/14/2007 11:14:36 . Scopes for Sale at the Beijing Planetarium . I was surprised that the prices were close to what you'd spend online at Orion Telescopes. I expected them to be much less. But hey, this WAS a museum so I shouldn't have expected any bargains. Logon to post a follow-up comment or review comments from others . Copyright (c) Amateur Telescope Makers of Boston, Inc. About Us Contact Us

National Aeronautics and Space Administration . ... Frank Borman . ... A romance with airplanes that began when he was 15 years old, took Frank Borman to the Air Force and then to NASA. ... Frank Borman retired from the air Force in 1970, but is well remembered as a part of this nation's history, a pioneer in the exploration of space and a veteran of both the Gemini 7, 1965 Space Orbital Rendezvous with Gemini 6 and the first manned lunar orbital mission, Apollo 8, in 1968. ...

Is the ozone layer recovering ? ... Global Regulation Global Regulation · · · · 1985: Vienna Convention 1987: Montreal Protocol Several amendments and adjustments Quantity for (chemical) ozone depletion of ODS: EESC (Equivalent Effective qu ect Stratospheric Chlorine): Weighting over release and ozone depletion of individual ODS EESC for mid-latitudes http//:www.wmo.ch/web/arep/reports/ozone_2002/q&as.pdf, Seite Q.29 1980 1990 2000 2010 2020 2030 2040 2050 2060 2070 2080 2090 2100 3. ...