... HST Overview . ... Proposal ID = 11704 Principle Investigator = Brian Chaboyer - Dartmouth College Title = "The Ages of Globular Clusters and the Population II Distance Scale" Time = June 3, 2012 , 13:30:54 - 14:28:47 Targets = HIP-56291-FIX, HIP-56291-REF1, HIP-56291-REF2, HIP-56291-REF3, HIP-56291-REF4, HIP-56291-REF5, HIP-56291-REF6 Instrument = FGS . ... One of the most accurate ways to measure the age of globular clusters is to determine the absolute brightness of sub-giant stars in the...

... About ATMoB . ... The Observing Committee is starting an Observing Awards Program to promote observing among the membership of the Amateur Telescope Makers of Boston. ... Participant must be a current member of the Amateur Telescope Makers of Boston . ... To qualify for your Observing Award Certificate, turn in your worksheet and drawings to an ATMoB Observing Committee member or observing@atmob.org . ... This Excel sheet has useful macros. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . ... Visiting Parkes radio telescope . ... Images . ... Radio Images of the Globular Cluster 47 Tucanae . ... We present deep ATCA radio images of the globular cluster 47 Tucanae made at 1.4 and 1.7 GHz and indentify 9 compact sources in the cluster core with 11 pulsars. ... Keywords: Pulsars, Globular cluster:47 Tucanae, radio continuum . ...

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... 22.09.2000 . ... Credit: B.J. Mochejska , J. Kaluzny ( CAMK ), 1m Swope Telescope Explanation: The fifty-fifth entry in Charles Messier's catalog, M55 is a large and lovely globular cluster of around 100,000 stars. ... Astronomers who make detailed studies of globular cluster stars can accurately measure the cluster ages and distances. ... Publications with keywords: star cluster - cluster - globular cluster - m55 . Publications with words: star cluster - cluster - globular cluster - m55 . ...

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... Tonight's Sky . ... The Magazine . News . Observing . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Globular cluster NGC 2808, elliptical galaxy NGC 2986, and the Sextans Dwarf . ... Open cluster NGC 2818, spiral galaxy NGC 2964, and spiral galaxy NGC 2976 . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

Общая Астрономическая Конференция > Товары для астрономов > Полезное для астрономии > Webb Society Deep-Sky Observer's Handbook vol 5 . ... Просмотр полной версии : Webb Society Deep-Sky Observer's Handbook vol 5 . ... Webb Society Deep-Sky Observer's Handbook by Kenneth Glyn Jones . ... http://ifile.it/fz9v6j/ebooksclub.org__Webb_Society_Deep_Sky_Observers_Ha ndbook__Open_and_Globular_Clusters.l_o3x4205kx44x8 9.pdf . ...

Astronotes Armagh Planetarium's Stellar Blog! ... Comets and Asteroids . ... Image credit:ESO/J.Emerson/VISTA. ... However others are less pessimistic and it has even been claimed that the mysterious ?Wow! signal? received in 1977 originated from the direction M55.б  Sadly, this still unexplained pulse of radio energy originated from a location rather to the northwest of M55 so I doubt if the source was this cluster (if indeed the signal was genuinely of extraterrestrial origin). ... Mysterious Wow! ...

Stellar Clusters are very useful laboratories for empirically studying stellar evolution. ... All cluster stars are at the same distance . All cluster stars have the same physical age . ... CM diagram Young Cluster In this case we see the Main Sequence fully represented. The blue dots represent massive stars with short main sequence lifetimes. ... Thus, identifying the most massive star which is still on the main sequence is an effective means of determining the age of a stellar cluster. ...

... The measurements extend to a lower 1.5 GHz limit of 1.0 mJy and comprise a complete sample with 1.5-GHz flux density 2.5 S1.5 J/AuJPh/47/145 VLA Survey of Rich Clusters of Galaxies II (Slee+, 1994) J/AuJPh/49/977 VLA Survey of Rich Clusters of Galaxies III (Slee+, 1996) ================================================================================ A VLA Survey of Rich Clusters of Galaxies II. ... Note (3): An elliptical Gaussian was fitted to the source. ...

ESO PR Photo 18b/00 . ... Caption : Images of two of the novae in NGC 1316 that were discovered during the observational programme described in this Press Release. ... In particular, no less than four novae were detected in a single giant galaxy within only 11 days . ... Moreover, the discovery of four novae in one galaxy in the Fornax cluster was possible with only 3 hours of observing time per filter. ... ESO Press Information is available on the WWW at . http://www.eso.org/outreach/press-rel/ . ...

... At the end of each night, send the data you have collected over to the VAX cluster. ... Once there, type: cd home sbast92 observer. This will put you into the data directory. Type mkdir and create a new directory under mtsb named for the month and the date after midnight. (ie. for the night of November 2 to the morning of the 3, use NOV_3. ... Check to make sure you are in the right directory by typing path. home sbast92 observer NOV_3 is what you would see if you used the example from above. ...

ARCSAT ID NUMBER: AS05 DESCRIPTIVE TITLE: Fundamental Properties of High Galactic Latitude Open Clusters PI: Ana Larson OBSERVER(S): Ana Larson, Joanne Hughes Clark UNCERTIFIED/UNTRAINED OBSERVERS:Daniel Larsen, Max Lutz COLLABORATORS: Joanne Hughes Clark CONTACT INFORMATION: dlarsen9@uw.edu 808-987-2176 lutzm@uw.edu 425-749-2812 jhughes@seattleu.edu anamunn@uw.edu TIME REQUESTED: ...

... Home Gallery Astrophotography Deep Sky Images by Joe DiNapoli . ... Deep Sky Images by Joe DiNapoli . ... Deep Sky Gallery by Ed Fox . ... Beyond New York City . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . Observing Resources for Amateur Astronomers - Part 2: Intermediate Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

IFP gallery SCORPIO (since 2000). Here some data observed on the 6m telescope with IFP installed in the SCORPIO focal reducer are presented. ... Velocity field . Mkn 1157 was observed 1 Sep. 2002 in the Ha emission line. Texp =32x240 sec, seeing 1.5", IFP260. ... This galaxy was observed September, 23 2000 in the Ha emission line, Texp=32x120 sec, seeing 2.5", IFP260. ... PV Cep was observed at the 6m telescope in May, 25 2003 in the [SII] 6716A with IFP501, Texp=36x200 sec, seeing 1.0". ...

. N OTE: . Only clusters with R<60 kpc were used to compute the spatial parameters and metallicity gradients for all subsystems except the corona. The numbers in parantheses give the number of clusters for which the corresponding parameter is known. The X O scale length of the old halo is strongly distorted by the observed asymmetry of the distribution of the corresponding clusters projected onto the XY plane ( Fig. 4А ) . discussion in the text | previous table .

... P1239 Date Received: 1998-Nov- 2 13:53:12 Technical Page Proposal Type: Short General Category: Pulsars Observation Category: Total Time Requested: 20 Hours Proposal Title: Are globular cluster and Galactic pulsars di erent? ABSTRACT: Pulsars in globular clusters, being distant and weak radio sources, are diфcult objects to observe. ... Even though they are likely to be recycled, the globular cluster pulsars do not seem to share the same formation scenario as the recycled pulsars in our Galaxy. ...

The radial distribution of metallicity of star-forming galaxies in a galaxy cluster can inform us about the mass assembly and enrichment history of the galaxy cluster. ... Both galaxy clusters are cool-core clusters at redshift z т?? ... The gas-phase metallicity of star- forming galaxies in MACS1115+01 exhibit anti-correlation with projected distance т??0.15 ТБ 0.08 dex/Mpc, whereas the radial metallicity distribution of RXJ1532+30 is statistically flat (т??0.09 ТБ 0.12 dex/Mpc). ...

RELATIVE SUNSPOT NUMBERS Description of Data from SGD Explanation of Data Reports: Relative Sunspot Numbers -- The relative sunspot number is an index of the activity of the entire visible disk of the Sun. ... The provisional daily Zurich relative sunspot numbers, Rz, were based upon observations made at Zurich and its two branch stations in Arosa and Locarno and communicated by M. Waldmeier of the Swiss Federal Observatory. ... This indicates the uncertainty above and below the predicted number. ...