... This paper ( Burke et al. 2003 ) describes the creation of one such catalogue - the Southern Serendipitous High-redshift Archival ROSAT Cluster (SHARC) survey - which covers an area of 17.7 deg 2 and consists of 32 clusters with redshifts between 0.05 and 0.7 and X-ray luminosities between 7 x 10 42 and 4 x 10 44 erg/s: the high-redshift subsample contains 16 clusters with = 0.3 and X-ray luminosities greater than 2 x 10 43 erg/s (luminosities are quoted for the 0.5 - 2.0 keV energy band). ... 1997 ...

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• site map
• The AstroStat Slog BeppoSAX
• The AstroStat Slog Blog Archive [ArXiv] Complete Catalog of GRBs from BeppoSAX,

... MASTER COMPILATION of GOODS/CDF-S spectroscopy . CDF-S Master Spectroscopic Catalog - v1.2 ( 26/08/2004): . ... Vanzella et al., 2004, (astro-ph/0406591) . VLT/FORS2 spectroscopy . ... Le Fevre et al., 2004, (astro-ph/0403628) . ... Szokoly et al.,2004, (astro-ph/0312324) . ... 2004 ApJ 600 L99 . ... 2004, ApJ, 602, L5 . ... Strolger at al.,2004,(astro-ph/0406546) . ... ESO/WFI-R image with marked objects with existing public spectroscopic data in the GOODS/CDF-S area . ...

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Software Forum Message . ... Astronomy Software Discussion | ... Halley - Electronic Catalogue Of Comets . ... I am informing you that the first release of Halley - Electronic Catalogue of Comets is presented on the website of the Institute of Applied Astronomy RAS. Halley - Electronic Catalogue of Comets is a free application to work with the comets database, containing Keplerian orbital elements, non-gravitational and physical parameters of the comet, and other data. ... www.astronomy.net . ...

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. Confirmed IDs from the input catalogue as a function of the selection colours. Note that the survey is also remarkably complete with respect to white dwarfs. | Front page | . | << - Completeness | Work currently underway - >> | . Robert J. Smith, ">rsmith@mso.anu.edu.au Last modified: Fri Sep 24 11:39:02 EST 1999 .

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• Dunk Proceedings - 2dF QSO Redshift Survey (Creation and Objectives)
• Dunk Proceedings - 2dF QSO Redshift Survey (UBR Input Catalogue)

... Advises . Contact Advises . As an advise for amateurs we would like to underline: if it's possible, try to observe 3 asteroid positions per night and do not neglect to observe the Numbered Minor Planets in your telescope field of view as a "by product" of your observational programs. ... We think such estimations ought to be produced every morning after CCD observations of the moving celestial objects by observer himself. ...

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Astronotes Armagh Planetarium's Stellar Blog! ... Alien Life . ... Johan Ludvig Emil Dreyer, later changed to John Louis Emil Dreyer, was born on 13 February 1852 in Copenhagen, Denmark.€а There was a tradition of military careers in his family but he chose a different life path becoming an astronomer of international repute. ... The seed of his future career was sown when, at 14 years, he got his hands on a book about Tycho Brahe (1546 тАУ 1601) who seems to have led a very interesting life . ...

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• William Herschel Astronomer, Musician, Hero and Deserter? | Astronotes
• What are the stars? | Astronotes

... Tonight's Sky . ... The Magazine . ... Observing . ... 50 Weirdest Objects . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... Beautiful objects from the Index Catalogue . ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine . ...

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• New stars found in galaxy | Astronomy.com

... Bad Astronomy . ... Bitesize Astronomy . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. Hey, it's either this or one of those really irritating PayPal donation buttons here. ... One in particular was named Charles Messier (he was French, so don't pronounce it ``mess ee er''! ... Between the years 1771 and 1784 the list grew to about 100 objects (many of which were found by others as well), and he gave his list to other comet hunters so they might not be fooled. ...

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... Home Articles Observing Resources for Amateur Astronomers ? Part 1: Beginning Observers Observing Resources for Amateur Astronomers ? Part 3: Advanced Observers . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . Observing Resources for Amateur Astronomers - Part 2: Intermediate Observers . Observing Resources for Amateur Astronomers - Part 3: Advanced Observers . Observing Resources for Amateur Astronomers - Part 4: Magazines and Miscellany . ...

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The ESA/ESO Astronomy Exercise Series 2 . The Distance to Messier 100 as Determined by Cepheid Variable Stars . ... The small variations in distance to the individual Cepheid variable stars in the Cloud are negligible compared with the much larger distance to the SMC. ... In this way Cepheid variable stars can be used as one of the 'standard candles' in the Universe that act either as distance indicators themselves or can be used to calibrate (or set the zero point for) other distance indicators. ...

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• ASP: Contents, Nov/Dec 1996
• ASP: Monster Comet Promises Big Show
• ASP: Books of Note Archives

MAIN PAGE . ... LINKS . ... AAL Members Sites . ... Amateur Astronomy . ... Mars Missions . Observatories Telescopes . ... astronomylinks.com. - astronomy and space links, shortcuts, favorites and bookmarks . ... Mel Bartels' Homepage about Amateur Telescope Making and a lot of interesting links (thx to Hugues Laroche for the link!) ... STEREO (Solar TErrestrial RElations Observatory) consists of two space-based observatories - one ahead of Earth in its orbit, the other trailing behind . ...

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Optical and UV Spectrophotometric Standard Stars . ... Apache Point expresses its thanks to J. R. Walsh and to ESO for allowing us to place a copy of these pages at Apache Point. ... Access to the standards is either through: . ... The data for the standard stars come from four sources: . ... Data for 23 stars based on IUE and optical spectra and calibrated by the primary WD standards. ... The data from which the plots were produced are also available by ftp access from the standard star pages. ...

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• Offsetting a Telescope
• ARC 3.5m | NICFPS

ATMoB "Messier Marathon Award " Guidelines Purpose: To promote observing among the membership of the Amateur Telescope Makers of Boston through participation in an all-night Messier Marathon. ... For each Messier object observed, check the space in the "Seen" column on the attached Messier Checklist and note the time and method of observation. ... Challenge Levels: Beginner Intermediate Master Observe and record information on 25 Messier objects in the attached worksheet. ...

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... Courtesy of NASA/ESA Observation data (J2000 epoch) Constellation Right ascension Declination Redshift Distance Type Serpens Caput 15h 17m 14.4s[] +21° 35 08[] 12,740±50 km/s[][1] 600±30 Mly (183±8 Mpc)[1] SA0(r) [citation needed ] [a] Apparent dimensions (V) 0.28 в 0.28[] Apparent magnitude (V) 16.0[] Notable features Ring galaxy Other designations PGC 54559,[] PRC D-51[] See also: Galaxy, List of galaxies Hoag's Object is a non-typical galaxy of the type known as a ring galaxy. ...

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• http://www.astro.louisville.edu/software/xmtel/archive/xmtel-3.1/queue/Messier.edb
• http://www.astro.louisville.edu/software/sbig/archive/xmccd-4.1/xmccd-4.1e/docs/ds9/ds9_user.pdf

... 000, 1­12 (2009) Printed 11 February 2010 A (MN L TEX style file v2.2) Analytical approximations of K -corrections in optical and near-infrared bands I1gor V. Chilingarian1 2 ,2,3 , Anne-Laure Melchior 1,4 and Ivan Yu. ... Received 2010 February 01; in original form 2009 August 14 ABSTRACT To compare photometric properties of galaxies at different redshifts, the fluxes need to be corrected for the changes of effective rest-frame wavelengths of filter bandpasses, called K -corrections. ... Table 1. ...

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Observational Log Cover Sheet Observation Date: Location: Observers: Jan 02, 2016 Home Myself Moon Phase: Seeing: Transparency: Notes: Unknown Unknown Clear At 2130 hours I took out a pair of binoculars and looked at M41. This was the last DSO on the Astronomical League Urban Skies list. I have a few double stars to observe and the entire list will be complete. Page 1 of 265 Observational Log Cover Sheet Observation Date: Location: Observers: Dec 05, 2015 Home Myself Moon Phase: Seeing: Transparency: Notes:

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... Brian reported that the new computer was installed at the observatory. ... Rex's club highlights were: 1) mention of the Washington Crossing observatory and its public outreach programs, availability to club members if a keyholder is present and introduction of Gene Ramsey an Brian Van Liew observatory co-chairs; 2) a brief mention that new keyholder training will take place this fall and to contact Brian for details, also acknowledgement that member Larry Kane completed the ...

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• http://www.princetonastronomy.org/newsletters/octnewsletter.pdf

... Soc. 427, 790­805 (2012) doi:10.1111/j.1365-2966.2012.21990.x Ages and abundances in large-scale stellar discs of nearby S0 galaxies O. K. Sil'chenko,1,2 I. S. Proshina,1 A. P. Shulga1 and S. E. Koposov 1 2 3 1,3 Sternberg Astronomical Institute of the Lomonosov Moscow State University, Moscow, Russia Isaac Newton Institute of Chile, Moscow Branch, Moscow, Russia Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 OHA Accepted 2012 August 23. ... S0s fading from spirals. ...

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• http://sn.sai.msu.ru/~sil/preprints/uvrings.pdf
• http://sn.sai.msu.ru/~sil/preprints/ilyina_sil.pdf
• http://sn.sai.msu.ru/~sil/preprints/ar578.pdf