... Local and Regional Coordinators, and OBSERVERS are needed for Friday night's spectacular Aldebaran Occultation and Graze Aldebaran is the brightest star, other than the Sun, that can be occulted by the Moon. ... Use your camcorder (or a borrowed camcorder) to record a strong local television station. ... Encourage other amateur astronomers, and other friends and relatives in the region of visibility to record the occultation with camcorders. ... This event is called an "occultation" by astronomers. ...

... LMC Project Outline . NGC 1818 Initial Results . ... The Large Magellanic Cloud (LMC) is uniquely suitable for the study of massive star clusters at all stages of evolution. By combining HST observations of these clusters with N-body models we hope to understand the origin and evolution of rich star clusters in our own Galaxy, in the LMC, and beyond. ... We aim to combine our HST observations with N-body models to understand the formation and evolution of globular clusters. ...

... Subject and Problems of Stellar Astronomy. ... Plane of Galaxy, Methods of Its Location Determination. ... Stars Distances. ... Other Methods of Stars Distances Determination. ... Tangential Velocities, Their Determination by Self-Motions. ... Determination of Solar Apex and Spatial Velocity by Radial and Spatial Velocities of Stars. ... Features of Orientation and Parameters of Peculiar Stellar Velocities Ellipsoid. ... General and Selective Light Absorption in Galaxy. ... Darc Clouds in Galaxy. ...

In 1848 the Swiss astronomer Johann Rudolph Wolf introduced a daily measure- ment of sunspot number. His method, which is still used today, counts the total number of spots visible on the face of the sun and the number of groups into which they cluster, because neither quantity alone satisfactorily meas- ures sunspot activity. An observer computes a daily sunspot number by multiplying the number of groups he sees by ten and then adding this product to his total count of in- dividual spots. ...

... We report on the preliminary results of experiments using a Bayesian cluster method to cluster objects present in photographic images of the POSS-II. ... We believe that the application of such algorithms to large-scale astronomical sky surveys can aid in cataloging the detected objects, and may even have the potential to discover new categories of objects. ... We have thus started to explore new clustering analysis and unsupervised classification techniques for this task. ...

... How to calibrate the energy scale for higher energies of future gratings? Difficult to find astronomical targets with well defined lines. ... Source Energy Flux keV HZ 43 0.2 Bright Sirius B 0.2 HZ43 /10 RXJ1856 1 Faint Simplicity Var WD WD No No No No Yes Yes Extend Lines Point Point Point 1' Point Point Point No Point Point Yes No Yes Yes Yes Yes Point Point , jet Point Cont Cont Cont Cont Lines Cont Lines Lines Lines ...

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. ...

... The ARC echelle spectrograph records the entire visible and near-IR spectrum in one exposure on a 2048 x 2048 SITe CCD chip with 24 micron pixels, with a resolution of 30,000. (2.5 pixels) . ... CCD is a SITe TK2048E back illuminated CCD . CCD is a 2048 x 2048 pixel array . ... Field of View: Available slits (Observing Specialist installable): 1.6" x 1.6" , 1.6" x 3.2" (default), 1.6" x 4.7", 0.9" x 0.9" (pinhole) . ... 31.6 grooves/mm, blaze angle b = 63.5 deg (nominal), or tan b = 2 . ...

... Comet Animation . ... Comet structures are diverse and very dynamic, but they all develop a surrounding cloud of diffuse material, called a coma, that usually grows in size and brightness as the comet approaches the Sun. ... As comets approach the Sun they develop enormous tails of luminous material that extend for millions of kilometers from the head, away from the Sun. ... The evaporated molecules boil off and carry small solid particles with them, forming the comet's coma of gas and dust. ...

... Astronomy news . ... NASA's Spitzer Images Out-of-This-World Galaxy . ... It is spiral-shaped like our Milky Way, with long, spindly arms of stars. The "eye" at the center of the galaxy is actually a monstrous black hole surrounded by a ring of stars. In this color-coded infrared view from Spitzer, the area around the invisible black hole is blue and the ring of stars, white. ... The ring around the black hole is bursting with new star formation. ...

... MASTER Net is 56 square degrees per 1 exposition . ... 06 Dec 2015: GRB 151205B: MASTER-NET early optical observations GCN18665 . ... 18 Nov 2015: GRB 151118A: MASTER-NET optical observations GCN18613 . ... 12 Nov 2015: GRB 151112A: MASTER-NET optical limit GCN18591 . ... 07 Nov 2015: GRB 151107A: MASTER-NET optical observations GCN18565 . ... 31 Oct 2015: Five OTs detected by Global Robotic MASTER Net ATel8232 . ... 02 Oct 2015: GRB 151001B: MASTER-NET early optical observations GCN18380 . ...

Numerical simulation of electromagnetic scattering by morphologically complex objects Janna M. Dlugach*, Michael I. Mishchenko** *Main Astronomical Observatory of the National Academy of Sciences of Ukraine, Kyiv, Ukraine **NASA Goddard Institute for Space Studies, New York, USA Radiation mechanisms of astrophysical objects: classics today 21 ­ 25 September, 2015, St.Petersburg. ... Phase angle dependence of the degree of linear polarization for the center of the Jovian disk. ...

NMW survey overview . Access image archive . ... The New Milky Way survey aims to detect bright (V<13.5) optical transients near the Galactic plane using an automated wide-field (8x6 deg.) system capable of surveying the whole Milky Way area visible from the observing site in one night. ... All images obtained during the transient search survey are available online (please use the image archive access form ). ... Images per field: . ... Images per night: . ... Milky Way imaging time: . ...

Электронная библиотека астронома-любителя. ... библиотека . архив RSN . ... Ru.Space.News: . Апрель 1998 . ... Дата: 03 апреля 1998 (1998-04-03) От: Alexander Bondugin Тема: Hubble Reveals Details Of A Newly Born Planetary Nebula Привет всем! ... STScI-PR98-15 HUBBLE REVEALS DETAILS OF A NEWLY BORN PLANETARY NEBULA Astronomers have caught a peek at a rare moment in the final stages of a star's life: a ballooning shroud of gas cast off by a dying star flicking on its stellar light bulb. ...

. Date, from: . 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 January February March April May June July August September October November December 1952 1953 1954 1955 1956 . to: . 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 January February March April May June July August September October November December 1952 1953 1954 1955 1956 . Longitude, from: . to: . Latitude, from: . to: . Area, from: . to: . Brightness, from: . to: .

... Recent Topics . ... MAO main . ... September Issue: Einste . ... Тема: September Issue: Einstein ? ... To view this email as a web page, go here. links.email.scientificamerican.com/servl.. NzQyODY1NjExS0 =0 . ... 100 years of general relativity links.email.scientificamerican.com/ctt?k... ... Einstein's thought experiments left a long and somewhat mixed legacy of their own links.email.scientificamerican.com/ctt?k... ... Unsubscribe - links.email.scientificamerican.com/ctt?k... ... MAO NASU . ...

... Запорожский клуб АЛЬТАИР > . Catalogue of 109 new Galactic open clusters, for Cartes du Ciel . ... Cartes du Ciel - Sky Charts . ... Этот каталог является версией части каталога "J/A+A/440/403 109 new Galactic open clusters (Kharchenko+, 2005) ", а именно файла stars.dat, содержащего информацию о 26778 звездах до 14.627m , находящихся в 130 рассеяных скоплениях района Млечного Пути (Galactic Open Cluster). ... We present a list of 130 Galactic Open Clusters, found in the All-Sky . ...

Общая Астрономическая Конференция > Форумы общей направленности > Общий форум любителей астрономии . S&T September 2005 . ... Поиск . Сообщения за день . ... 16.08.2005, 01:35 . ... Olegus . ... Созвездия (поиск и описание) .. Созвездия южного неба (поиск и описание) .. Осенние созвездия (поиск и описание) .. Летние созвездия (поиск и описание) .. Околополюсные созвездия (поиск и описание) .. Весенние созвездия (поиск и описание).. Зимние созвездия (поиск и описание) .. ...

. The Gemini. The Gemini is a zodiak constellation. The stars Castor and Pollucs presents the twins' heads and theeir bodies lead down to the Mylky Way, to the Orion side. The Greeks called the stars so, because Castor and Pollucs were the names of Zevs sons. Castor is a visible triple system and its both bright components are the double stars and the weak one is an eclipsed double system. So Castor is a multiple system of the six stars. Back .

... ADC_Keywords: Galaxy catalogs ; Nonstellar objects Description: NGC 2000.0 is a modern compilation of the New General Catalogue of Nebulae and Clusters of Stars (NGC), the Index Catalogue (IC), and the Second Index Catalogue compiled by J. L. E. Dreyer (1888, 1895, 1908). ... The order of the new catalog is strictly by right ascension, the NGC and IC objects being merged into one machine-readable file. ... The book also contains a table of right ascensions for NGC and IC objects. ...