... Early History of Optics . Key Players in the History of Science . ... Chronology of Writings about the Age of the Earth . The Age of the Earth Debate . The Nature of Science . ... Most Important Events in Astronomical History . ... On the Nature of Things - Lucretius . ... The Shapley-Curtis Debate . ...

. Search for a cluster by name: . Otherwise, search within a radius: . RA: . Dec: . Radius (arcmin): . Download the catalogue of AMI results (FITS format)

Peremennye Zvezdy ( Variable Stars ) 35 , No. ... We present the results of our new observations of QS Draconis, a recently discovered double-mode high-amplitude Scuti variable, HADS(B) type. ... Our CCD observations in the Johnson bands were performed at the Tien Shan Astronomical Observatory of the V.G. Fesenkov Astrophysical Institute, at the altitude of 2750 m above the sea level. ... The finding chart (Fig. 1) identifies the variable star, comparison star, and check star. ... Fig. ...

This document presents STScI policy for granting formal changes, additions, andalterations to accepted HST programs, as well as for repetitions of failed observations. Four types of request may be made by a GO, GTO, CS, or PC. ... The first type is a HOPR (HST Operations Problem Report), which describes an operational problem that occurred in obtaining data and which requests a repetition of the lost observation. ...

... Up: Data Analysis and Processing Techniques . ... Also, a method for quality control of CCD observations is suggested. ... Everyone who observes a celestial object using a CCD detects moving celestial objects as a ``by product''. ... We hope that our investigations may be useful for near-Earth space control and also for searches of the moving celestial objects through analysis of old and new CCD frames obtained at any amateur or professional astronomical observatory. ...

... Telescopes . ... The time requests are accepted in an electronic version with on-line form in Russian or English. ... Unregistered request will be disregarded by the Large Telescopes Programm Committee. In exclusive cases the secreatry of the Committee is entitled to accept an observational time request given permission of the Chairman of the Committee or the director of the SAO RAS. The Program Committee considers generally one time request submitted by the principal applicant. ...

... PhD Yale University, Astronomy, 2015 . ... MS, MPhil Yale University, Astronomy, 2011 . ... Plunkett, Adele L. ; Arce, H��ctor G.; Corder, Stuartt A.; Dunham, Michael M.; Mardones, Diego; Garay, Guido 2014, ApJ, 803, 22, ������Assessing molecular outflows and turbulence in the protostellar cluster Serpens South��� . ... Department of Astronomy Seminar, Universidad de Chile, Santiago, Chile April 2013 . ... Yale-University of Chile Meeting, New Haven, CT December 2011 . ...

Planned Observations sorted by Proposal ID . ... XMM-Newton SOC Home Page Conferences & Meetings . ... Data Analysis SAS News What is SAS? ... Types: CAL : Target of routine calibration plan A : Target accepted for AO-1/AO-2 with priority A B : Target accepted for AO-1/AO-2 with priority B GT : Target of guaranteed time program T(*) : Triggered target candidate accepted for AO-1/2 with priority A or B Alpha and Delta are up-dated in comparison to the coordinates previously published on the Web-pages. ...

Next: AXAF Recipes Up: ROSAT HRI Recipes Previous: Quantum Efficiency Correction (a.k.a. For some observations, a significant amount of data may have been rejected during SASS processing because the background level was higher than the calculated threshold for rejection. ... REJECTED EVENTS . ... The recipe will allow the user to include rejected events in the generation of a new qpoe file and filter on the background level. ... This creates a qpoe file with standard + rejected events. ...

ON THE IMPACT OF THE GALACTIC ABERRATION ON VLBI-DERIVED PRECESSION MODEL Z.M. MALKIN Pulkovo Observatory Pulkovskoe Ch. ... Corrections to adopted precession rate are usually computed from the linear trends in long-term time series of celestial pole offset (CPO), which are the differences between the measured and the theoretical coordinates of the celestial pole. ... CONCLUSIONS We have estimated the impact of GA on parameters of precession-nutation model derived from VLBI observations. ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Lightcurve of HW Vir from images obtained using the Faulkes Telescope South, operated by Las Cumbres Observatory . The blue triangles show the difference between two stars whose brightness is constant. ... This shows the value of the Faulkes Telescopes in the follow-up observations of eclipsing binaries with the aim to detect and characterise additional circumbinary companions. ...

... Deep Radio and X-Ray observations of Pictor A . ... A study of deep observations of Pictor A in radio with the Australia Telescope Compact Array (ATCA) and in X-rays with the Chandra X-ray observatory over a time span of 15 years has just been accepted for publication in Monthly Notices: Hardcastle et al. ... This has provided further evidence of time variability in the jet and confirmed previous tentative evidence of a counter-jet. ... today * ATNF | ... ATCA | ...

... The Earth orientation parameters UT1 and polar motion (x pol ; y pol ) are relat� ed with the values of UT0 and VOL obtained from the LLR analysis for a station with geocentric longitude and latitude (�; OE) by the following expression: 7 UT0 \Gamma UTC = UT1 \Gamma UTC + (x pol sin � + y pol cos �) tan OE 15 V OL = x pol cos � \Gamma y pol sin � At least four normal points for each station--reflector pair at one day were accepted for the diurnal UT0 estimations. ...

MEMORANDUM To: ALFA Consortium Members From: R. L. Brown Subject: Proposals for Shared-Risk ALFA-related Precursor Observations: Guidelines Date: January 29, 2004 Several individuals and groups involved with the ALFA consortia and/or with planning for ALFA observations have asked for clarification regarding the opportunity to submit proposals for shared-risk ALFA precursor observations at the February 1, 2004 NAIC proposal deadline. The following are the guidelines for such proposals: 1. ...

Frequently Asked Questions (about the FITS archive) . HyperLeda home | Documentation | ... Some variations in the setup are accepted in a given dataset depending on the context: In broad Band Imaging, the observations taken through different filters (U B V R and I) belong to the same dataset. ... What data are archived in the HFA? The HFA stores files as they are provided, ie., it can be raw observation files or pre-reduced files (flatfielded and wavelength calibrated). ... HyperLeda . ...

... Gallery . ... The sculpture is accepted . Sidebar Left . Sidebar Top . No Sidebar . Sidebar Bottom . Sidebar Right . ... Title: The sculpture is accepted . Description: Image: Bob Cooper . NOTE: All images are copyright and must not be reproduced or mirrored in any form without written permission. ... The sculpture is accepted Image: Bob Cooper . ... Powered by Gallery 3.0.9 (Chartres) . ...

Not everyone accepted Parker's theory of the solar wind when it was first published in 1958, and it was debated until observations confirmed it. ... Lower-velocity solar wind comes from regions in between sunspot regions and coronal holes . ... It was therefore expected that the solar wind above the Sun's poles would be relatively fast and smooth-flowing. ... The Ulysses mission has its own home page on the web, leading to many related files. ... Exploration" home page (index) Glossary . ...

... Files in red?history) . ... Solar Wind . ... In sunspot regions field lines form arches which hold back the solar wind, but in the "holes" in between they extend outwards and allow the plasma to accelerate unimpeded. ... It was therefore expected that the solar wind above the Sun's poles would be relatively fast and smooth-flowing. ... All planetary orbits lie approximately in the same flat plane as that of the Earth ("plane of the ecliptic"), which is also close to the Sun's equatorial plane. ...

Title: A New Model of the Gravitational Lens 0957+561 and a Limit on the Hubble Constant . Authors: Norman A. Grogin , Ramesh Narayan (Harvard Univ.) ... Title: ROSAT/PSPC observation of the distant cluster CL0939+472 . ... Title: Interaction in the Bimodal Galaxy Cluster A3528 . ... Title: Cosmological Implications of Galaxy Cluster Evolution . ... Title: Galaxy Cluster Virial Masses and Omega . ... Matches 201 to 222 from a total of 222 matches for the search pattern galaxy cluster . ...

... Dept. for Astrometry & Space Geodynamics . ... Dept. for Physics of Stars&Galaxies . Dept. for Space Plasma Physics . ... Solar telescopes . ... 2016,MNRAS, 2016MNRAS.tmp.. ... 2016,MNRAS, Vol.455 ,is.1,p.357-369. ... 2016,MNRAS, Vol.456 ,is.1,p.181-191. ... WASP- 22, WASP-41, WASP- 42 and WASP- 55. ... 2016,MNRAS, Vol.456 ,Is.1,p.990-1002. ... Observations . ... In 2002 regulary observations of comets with using of CCD camera S1C started at Andrushivka Astronomical Observatory, near Zhytomyr. ...