... TELESCOPE MEADE LS ACF 6' - Etat neuf . ... ТК SystУ?me optique : Advanced Coma-Free (ACF) . ... ТК DurУ?e d'utilisation avec les piles : 3 Уљ 5 heures . ... ТК Fonction GO TO vers l'un des 100 000 objets cУ?lestes stockУ?s dans la base de donnУ?es ou Уљ partir des coordonnУ?es cУ?lestes de n'importe quel objet cУ?leste avec une prУ?cision de 5 minutes d'arc. ... ТК Roue dentУ?es de 125 mm sur les deux axes pour un suivi prУ?cis des objets cУ?lestes et pour permettre l'astrophotographie. ...
Next: DIRECT MASSES FOR BXCIR Up: EXTREME HELIUM STARS: PULSATION Previous: PULSATION PROPERTIES . As already indicated, V652Her is an important EHe star because its relatively short pulsation period and large amplitude pulsations allow its overall dimensions to be determined with high precision. ... Saio & Nomoto (1998) made the first successful models for the merger of two carbon-oxygen white dwarfs, and prompted Saio & Jeffery (2000) to attempt models for the merger of two helium white dwarfs. ...
Once students get the hang of it, they can find and measure the brightness of Delta Cephei in a few minutes. ... of Delta Cephei . ... Oct. ... The following table lists the measurements of Delta Cephei made by one amateur astronomer in autumn 1990. ... 4.0 . ... This activity is a simplified version of one that appeared in Hands-On Astrophysics, a series of activities prepared by the American Association of Variable Star Observers with support from the National Science Foundation. << previous page | ...
... Tonight's Sky . ... Star Atlas . ... Armchair astronomers find planet in four-star system . ... A joint effort of citizen scientists and professional astronomers has led to the first reported case of a planet orbiting twin suns that in turn is orbited by a second distant pair of stars. Aided by volunteers using the Planethunters.org website, a Yale-led international team of astronomers identified and confirmed discovery of the phenomenon т?? called a circumbinary planet in a four-star system. ...
... Since the bulk of the data for rotational modulation were taken during short ( < 11 night) runs, there is a great deal of variation in the sensitivity to periods, depending on the length of the period. The searches are much more sensitive to short periods than to longer ones. ... For the simulation, the input data was a pure sine wave. ... The strength is that in all cases, even down to signal to noise levels of one, a large percentage of the power can be found in the correct period. ...
STEP INTO THE BLUE - MEADE INSTRUMENTS PRODUCT GUIDE . ... Telescopes . LX850 Series . ... Superb optical performance coupled with time proven computerized pointing and tracking has made the LX200 ACF series a best-seller in the high-performance telescope class. ... LX70 Series . ... Optical Tubes . ... LX70 Optical Tube Assemblies . ... LX70 R6 6" Newtonian Reflector Optical Tube Assembly . ... The Meade LX70 6тАЭ Newtonian Reflector is equipped with a high-quality f/5 parabolic primary mirror. ...
I. Since the crew of astronomers in this Observational Techniques course already has some experience with "optical telescopes" and a working knowledge of optics and diffraction theory, it's useful to apply that experience to radio telescopes. ... The telescope is a favorite to Australian astronomers for observing the 21cm spectral line of atomic hydrogen. ... The idea is to use the Parkes All-Sky Survey in the 21cm line to estimate some parameters for your favourite galaxy. ...
... This is possible at modest cost due to the low moments of inertia of the telescope and enclosure. ... This same performance will be achieved in higher winds when the telescope enclosure is facing away from the wind, or by using wind screens. ... The telescope system (MILT) will be remotely operable with an on-site operator's assistance by an astronomer located at one of the ARC member institutions. ... Mean Wind Speed . ... Offsets > 10 deg: 1 arc sec rms max . ... 5 sec max, tracking to tracking . ...
Truebloodb,g, K. Zelayab Department of Astronomy, The Ohio State University, 140 West 18th Avenue, Columbus, OH 43221 USA; bNational Optical Astronomy Observatory, 950 North Cherry Street, Tucson AZ 85719 USA; cCerro Tololo Inter-American Observatory, Casilla 603, La Serena ... USA ABSTRACT We describe the design, construction and measured performance of the Kitt Peak Ohio State Multi-Object Spectrograph ( KOSMOS ) for the 4-m Mayall ... Optical layout for KOSMOS and COSMOS. ...
Фотографии и видео - внизу страницы. ... Архив фотографий из похода - файл называется 08_kavkaz.zip . Размер файла 593 Мб . ... Например 20100806_124315.jpg - 6 августа 2010 года, 12ч 43м 15сек. ... Разрешение кадра 1280x720 пикселей, размер файла 1.66 GB . ... Файл в формате mpeg-2 (как DVD). kavkazHD.avi . Разрешение кадра 1280x720 пикселей, размер файла 655 Mb . ... Разрешение кадра 720x576 пикселей, размер файла 668 Mb . ... Разрешение кадра 720x400 пикселей, размер файла 296 Mb . ...
... Сообщения без ответов . ... Последнее сообщение . ... k2s Перейти к последнему сообщению . ... Asya_Schtirlitz Перейти к последнему сообщению . ... DeZeRt Перейти к последнему сообщению . ... Последнее сообщение Re: Химия. ... Vasisualiy57 Перейти к последнему сообщению . ... Ане4ка Перейти к последнему сообщению . ... bootal Перейти к последнему сообщению . ... Последнее сообщение Re: Равноденствие 2010 . Capricornus Перейти к последнему сообщению . ... Dmitry Перейти к последнему сообщению . ...
Sternberg astronomical institute activities on site testing programs review Victor Kornilov comprehensive/characterization/of/astronomical/sites > kislovodsk/russia/2010/october/4-9 > Introduction This presentation responds on our activity in 5 last years only, inspite of that in SAI site testing researches have been started many years ago. ... More detailed discussion is devoted to MASS and DIMM measurements processing, some additional effects which were taken in account in last year. ...
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... Telescopes . ... But regardless of where you observe from or whether or not you have a telescope, exploring the many aspects of astronomy can be an exciting hobby. It can be an activity shared with thousands of other amateurs all over the world. ... Or it might be pursued more actively by joining a local astronomy club like the Amateur Telescope Makers of Boston and learning by direct association with other amateurs. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...
. Comment on J0648-3957 . No detection: a steep spectrum, alpha=-0.82, between 80 MHz and 8.4 GHz. Tasker, private communication, found the source to be heavily resolved on ATCA baselines ( reference ). VLBApls home page . Last modified: 16 Oct 2000
... The tracking (i.e. unguided) performance of the United Kingdom Infra-Red Telescope (UKIRT) relies on the accuracy of its 24 bit absolute encoders. These have been long known to generate two systematic errors. The first is a periodic error resulting from the encoder deriving the last 8 resolution bits by interpolation between the rulings on its code disk. ... To estimate the measurement errors we introduce a periodic filter to model and a Kalman filter to model . ...
... Four types of galaxy environments are considered: clusters, centers of groups, other places in groups, and the field. ... In order to check whether the mean ages of the stellar populations depend on environment density monotonically, as the hierarchical par adigm predicts, in this work I consider four types of environment separately: the cluster galaxies, the brightest (central ) galaxies of groups, the secondranked group members, and the field galaxies. ... Group center SB(rs)0# 204 637 1996 Oct ...
Mon. Not. R. Astron. Soc. 349, 13971418 (2004) doi:10.1111/j.1365-2966.2004.07619.x The 2dF QSO Redshift Survey XII. The spectroscopic catalogue and luminosity function S. M. Croom,1 R. J. Smith,2 B. J. Boyle,1 T. Shanks,3 L. Miller,4 P. J. Outram3 and N. S. Loaring4,5 1 2 3 4 5 Anglo-Australian Observatory, PO Box 296, Epping, NSW 1710, Australia Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead CH41 1LD Department of Physics, University of