... Modulating Cepheid radial velocity curves - a systematic uncertainty for Baade-Wesselink distances . ... In the current era of "precision cosmology'', measuring the Hubble constant (H0) more accurately and precisely helps to better constrain the properties of dark energy. ... Finally, the distance to the megamaser galaxy NGC 4258, which is well beyond the Local Group, has been measured to 3% accuracy, providing strong constraints on the extragalactic distance scale (via Cepheids) and for Ho. ...

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. Next: Data Analysis Applications . Previous: Applications . Table of Contents -- Index .   . Cost-Effective System Management . Skip Schaller . Other People's Software . E. Mandel and S. S. Murray . Message Bus and Distributed Object Technology . Doug Tody . Building Software from Heterogeneous Environments . M. Conroy, E. Mandel and J. Roll . payne@stsci.edu

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... Tonight's Sky . ... Observing . ... Supernova showered Earth with radioactive debris . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Asymmetric ashes . ... A stronomers are reporting remarkable new findings that shed light on a decade-long debate about one kind of supernova, the explosion that marks a star's final demise: does the star die in a slow burn or with a fast bang? ... Only registered members of Astronomy.com are allowed to comment on this...

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... Home Articles Comet Hyakutake: The Great ?Earthgrazing? Comet of 1996 . ... Beyond New York City . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . Observing Resources for Amateur Astronomers - Part 2: Intermediate Observers . ... Comet Hyakutake: The Great "Earthgrazing" Comet of 1996 . 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 . ...

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... The Arcetri Astrophysical Observatory (OAA) , part of the National Institute of Astrophysics (INAF) , has a long tradition of solar physics studies, initiated more than a century ago. Nowadays, these continue with a number of researchers involved in solar and plasma physics issues, divided between the Observatory and the Astronomy and Space Sciences Department of the University of Firenze . ... This email address is being protected from spambots. You need JavaScript enabled to view it. ...

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Star Name . ... Crux) . ... Canis Major) . ... Centaurus) . ... Ursa Major) . ... Ursa Minor) . ... Orion) . ... Carina) . ... Canis Minor) . ...

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... and prior, see paper files. return to top . ... ORDOC 01-02) D. Strom, J Brau, "Oregon RPC Status Report," , The Second IFR Workshop, January, 2001. ... ORDOC 01-07) E. Torrence , "W Boson Properties" , ( talk transparencies, XXI Physics in Collision Conference 2001, June, 2001). ... ORDOC 01-14) E. Torrence, "Precision Energy Measurements for Linear Colliders" ,Snowmass 2001, June/July, 2001 (Talk transparencies) . ... ORDOC 01-26) R. Frey, "Calorimeter Status and Next Steps" , LCD Talk, Sept., ...

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Revolution: 1503 . POS_1503_080222_170_00_0002.XMM . ... 2008-02-22 | ... PSF version: 1503_04 . ... Slew: 3235 secs . ... Obs_dur: 33000 secs . ... 004: 31986 sec . ... 005: 31981 sec . ... 400: 288 sec . ... 001: 31847 sec . ... 002: 31852 sec . ... Image Fast . 006: 2737 sec . ... 003: 30526 sec . ... 401: 2801 sec . ... 402: 2801 sec . ... 403: 2801 sec . ... 404: 2801 sec . ... 007: 3097 sec . ... 405: 4961 sec . ... 406: 3161 sec . ... 407: 3161 sec . ... 408: 3161 sec . ... Image . ...

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User catalogs allow you enter positions for your objects into a file, to save time during an observing run. ... Before diving into the details, here is an example: # default coordinate system and object # (these are the standard defaults, so if you like them you can omit this line) CSys=FK5; Date =2000; RotType= Object ; RotAng=0 # some random objects # Name Pos1 (e.g. RA) Pos2 (e.g. Dec) Options in keyword-value format NGC6543 rot 90 ... Object Data . Defaults . Catalog Options . ...

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... Oral History Project Participants . ... Please note: This is a complete list of Oral History interviews conducted for this project as of December 30, 2015 . ... Algranti, Joseph S. Allen, Joseph P. Anders, William A. Annexstad, John O. Arabian, Donald D. Armitage, Peter J. Armstrong, Neil A. Bagian, James P. Barnes, Geneva B. Barton, Elmer E. Battin, Richard H. Bean, Alan L. Beck, Harold D. Beckett, Archie R. Bell, Larry E. Bennett, Floyd V. Berry, Charles A. Berry, Ronald L. Biggs, Chuck . ...

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... Уран - седьмая планета от Солнца и третья по размеру. ... Кольцо Урана рассмотреть вообще очень сложно, обычными оптическими средствами здесь не обойтись. ... Уран - старинное Греческое божество Неба, самый ранний высший бог, который был отцом Хроноса (Сатурна), Циклопа и Титана (предшественников Олимпийских богов). ... Как у Земли, Юпитера и Сатурна, у Урана есть магнитный хвост, состоящий из захваченных полем заряженных частиц, растянувшийся на миллионы километров за Уран от Солнца. ...

192. http://www.princetonastronomy.org/papers/losmandy_manual.pdf

193. Results of recent and ongoing site programs