Your First Telescope . Articles | AstroGuide | ... Binoculars , even cheap ones, are sometimes a good substitute for a cheap telescope. In addition, binoculars are almost always good companions to a telescope. Avoid department store, toy store, and "Nature/Science" store telescopes. I cannot restate this strongly enough: STAY AWAY from department store telescopes! ... www.astronomy.net . About Astronomy Net | ... dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...
яЛП . PubliУ? le 06/11/2011 par Matthieu Thuillier . Date : 05/11/2011 . Lieu : Languidic . MatУ?riel de prise de vue : newton 250 mm F/D 3,4 ( correcteur de wynne 3" keller) + atik 11000 et filtre H alpha . Commentaires : addition de 28 poses de 5 min sur newton 250mm F/D 3,4 (rУ?sultant) avec une atik 11000.PrУ?traitement prism7, addition sigma clipping,logarithme sur l'image finale
Astronotes Armagh Planetarium's Stellar Blog! ... Space Flight . ... Rockets . ... 10- Rocket Light Shade . If you google rocket light shade you will get a range of different options to decorate your childБЂ™s room. б The one I spotted was a light shade which featured two tiers with planets and rocket designs on it.б It would make a really cool addition to any space-themed room. б . ... 8- Personalised Space Book . ... 7- Rocket pop-up tent . ... 3- Space Centre Lego set . ...
STARTEST IMAGES GALLERY . STARTESTING TELESCOPES WITH AN AUTOCOLLIMATOR . ... This website is a joint effort of Markus Ludes from APM-Telescopes and Cor Berrevoets ( Aberrator free startesting Software ). The site aims at explaining the different aspects of star-testing telescopes. ... Markus Ludes (APM telescopes) used a high quality 10" Maksutov Newtonian (Zygo tested at 632,8 nm with the following errors: 1/10.1 wavefront p.t.v. and 1/51 wavefront RMS) as collimator in single pass scheme. ...
... Members . July Meeting - Speaker Members' Night . Members' Night . ... In addition to member presentations, Mr. Robert Benoit, Manager of the Optical Division and Optical Systems Engineer at SSG Precision Optical in Wilmington, MA will speak first about optical system design for space applications. ... Please join us for a pre-meeting dinner discussion at Changsho, 1712 Mass Ave, Cambridge, MA at 6:00pm before the meeting. ... Jul . ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...
... The spectrum of the brightest star, our Sun, shows several dark gaps perpendicular to the flow of it’s colours (figure 1). These so called spectral absorption lines where discovered in 1802 by the English scientist William Wollaston. ... Some stars as Pollux show a spectrum similar to that of our sun with strong Ca II and Fe II lines, others as Sirius or Vega show strong absorption lines of hydrogen, others, as Mira show very complicated spectra due to molecular absorption lines (see figure 5). ...
... Home Observing Spring Starfest in Woodlawn Cemetery, The Bronx . ... Spring Starfest in Woodlawn Cemetery, The Bronx . ... AAA In the News . ... The Amateur Astronomers Association of New York Sponsors March 19 Spring Starfest at Woodlawn Cemetery in The Bronx . The Event: On Saturday March 19, the Amateur Astronomers Association of New York (AAA), in conjunction with the Woodlawn Conservancy, will take a tour of our solar system and universe during its annual Spring Starfest in Woodlawn Cemetery. ...
Dynamic Shack-Hartmann System RAPID V. G. Orlov, V. V. Voitsekhovich Instituto de AstronomМa, UNAM, MИxico CONACYT project E9507-1020P UNAM PAPIIT IN104910 Telescopes OAN OAN- SPM 2.1m telescope 1.5m telescope 0.84m telescope 2.1m telescope OAN-Tonanzintla 1m telescope Astronomical site SPM Observing statistics 1982-2002 (Tapia+ 2007 ) Photometric nights : 64.1% Spectroscopic ... Rapid - Dynamic Shack-Hartmann All modern telescopes demand installation of adaptive system. ...
... 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. ...
... GCR and SCR are primary cosmic rays. 10-15 years after the discovery of cosmic radiation (1919) there emerged two main avenues of investigation in the physics of cosmic rays (CR): 1) nuclear - elucidation of the origin of elementary particles and nuclear interactions; and 2) astrophysical (space physics) - solution of the problem related to the origin and variations (changes in intensity) of CR. ... Besides, the CR flux in interplanetary space is, strictly speaking, not isotropic. ...
We present a catalogue of galaxies for which spatially resolved data on their internal kinematics have been published; there is no apriori restriction regarding their morphological type. The catalogue lists the references to the articles where the data are published, as well as a coded description of these data: observed emission (E) or absorption (A) data, optical (O) or radio (R) data, velocity (V) or velocity dispersion (D), radial profile (1) or 2D field (2). ...
... April 1992 The MD5 Message-Digest Algorithm Status of this Memo This memo provides information for the Internet community. ... combination): -sstring - digests string -t - runs time trial -x - runs test script filename - digests file (none) - digests standard input */ int main (argc, argv) int argc; Rivest [Page 17] RFC 1321 MD5 Message-Digest Algorithm April 1992 char *argv[]; { int i; if (argc 1) for (i = 1; i argc; i++) if (argv[i][0] == '-' argv[i][1] == 's') MDString (argv ...
... Православный календарь . ... Вечный календарь v2.5 Программа, позволяющая получать данные о любом дне григорианского или юлианского календаря в период с 100 по 3000 год н. э. В удобной форме предоставляется информация о православном и народном календарях, гражданских праздниках, астрономических данных о Луне и Солнце и др.. ... Православный календарь на год. ... Смотрите также: История календаря. ... История календаря. ... История календаря и хронология. ... Календарь и хронология майя. ...
INNER POLAR RINGS REGULAR LENTICULAR GALAXIES 1 K. Sil'chenko 2 Sternberg Astronomical Institute, 119992 Moscow, Russia; Isaac Newton Institute Chile, Moscow Branch; olga@sai.msu.su Afanasiev Special Astrophysical Observatory, 369167 Nizhnij Arkhyz, Russia; vafan@sao.ru Received 2003 December accepted February 4 ABSTRACT have investigated a sample of galaxies, mostly with circumnuclear dust lanes orthogonal their major axes, chosen from Hubble Space Telescope Wide Field Planetary Camera 2 images. ...
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
The low aspect ratio, or spherical tokamak Globus-M [1] has recently been built in a support of international spherical tokamak plasma investigation program. ... The survey to determine the work scope in diagnostic design for Globus-M is given in the paper. ... The next one is an advanced diagnostic set intended to supply the data on basic plasma parameters: electron temperature and density profiles, ion temperature, plasma composition, radiation profile, Zeffective. ... Magnetic Diagnostics. ...