... Filtre Astronomik UHC (Ultra High Contrast) (1.25") . Filtre Astronomik OxygГЕne III (OIII) (1.25") . Valeur neuf 100в'ѓ (actuellement sur Optique Unterlinden), VENDU -30% SOIT 70в'ѓ piГЕce . Polarisant variable Orion (1.25") . Valeur neuf 50в'ѓ (actuellement sur Optique Unterlinden), VENDU -30% SOIT 35в'ѓ . ... Remise en mains propres sur Perpignan ou envoi postal avec frais de port partagГї. ...

... Variable Star Observing . ... Thursday, Nov 13, 2014 at 8:00 PM . While taking deep-sky images or observing double stars through the eyepiece can be fulfilling, the universe is dynamic and constantly changing - never more obviously seen than with variable stars. ... Please join us for a pre-meeting dinner discussion at Changsho, 1712 Mass Ave, Cambridge, MA at 6:00pm before the meeting. ... Nov . ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

... Help the observer to classify the variables as classical Cepheids (C1), type II Cepheids (C2) and RR Lyrae stars (R). ... Notes: Classical Cepheid stars are a type of pulsating variable stars, which show linear relationship between period of pulsation and absolute luminosity in a log-log plot. ... RR Lyrae stars are another type of pulsating variable stars which show very short period (less than 1 day) of pulsation and for all RR Lyrae stars, the absolute luminosity is nearly constant. ...

... Stars . ... Cepheid variable stars have been known since the 18th century. ... Regularly brightening to a peak over days, weeks or months before fading these variable stars were remarkable curiosities to astronomers in past centuries.€а The term Cepheid is taken from the star Delta Cephei in the constellation of Cepheus, which was identified as variable€а in 1784 by the teenaged prodigy John Goodricke (1764-96). ... Tweets that mention Cepheids: Inconstant Stars which break the rules | ...

... INTRODUCTION There are four co-aligned instruments onboard the INTEGRAL (The International Gamma-Ray Astrophysics Laboratory) satellite: (1) gamma-ray imager IBIS (15 keV­10 MeV, field 9 deg, 12 arc min FWHM), (2) gamma-ray spectrometer SPI (12 keV­8 MeV, field 16 deg), (3) X-ray monitor JEM-X (3­35 keV, field 4.8 deg), and (4) optical monitoring camera OMC (Johnson V-filter, field 5 deg) [1]. ... Most symbiotics are the long-period causins of CVs and X-ray binaries. ... IBIS ­ all obs. ...

... The main periodicity in the Sun 's activity is the 11-year cycle called the solar cycle. ... During the cycle, changes occur in the Sun's internal magnetic field and in the surface disturbance level. ... At the beginning of a cycle the solar magnetic field resembles a dipole which axis is aligned with Sun's rotation axis. ... The sunspot number - and Sun's activity - is at maximum in the middle of a cycle, when the Sun's internal magnetic field is most chaotic. ... Space Physics Text Book of Oulu ...

... Astrophysics Data System Abstract Service - The ADS Abstract Service provides access to over 160,000 astronomical abstracts since 1975. Astrophysics Revision Site . ... Common Astrophysics Acronyms . Gravitational Wave Detector GEO 600 - aims at the direct detection of gravitational waves by means of a laser interferometer of 600 m wavelength. ... Secrets of Creation - new theory on the creation of the Universe, the Big Bang, parameters of the Universe, fundamental laws of the Universe. ...

Qualitative structure of perturbations propagation process of the Fisher ­ Kolmogorov equation with a deviation of spatial variable Sergey Aleshin , Sergey Glyzin P.G. Demidov Yaroslavl State University November 17-19, 2015 S.V. Aleshin , S.D. Glyzin Qualitative structure of p erturbations propagation pro cess of the Fisher ­ Kolmogorov equation with a deviation of spatial ... 2 Fisher R. A. The Wave of Advance of Advantageous Genes // Annals of Eugenics. ...

To appear in "Fourth Workshop on Robotic Autonomous Observatories (2015)"RevMexAA(SC) METEOR OBSERVATIONS WITH MINI-MEGATORTORA WIDE-FIELD MONITORING SYSTEM S. Karpov, 1, 3 N. Orekhova2 G. Beskin, 1, 3 A. Biryukov3,4 S. Bondar,2 E. Ivanov,2 E. Katkova,2 A. Perkov, and V. Sasyuk3 RESUMEN 2 Favor de prop orcionar un resumen en espanol. ... The faintest detected meteors has the peak brightness about 10 mag, while the ma jority - from 4 to 8 mag. ... 2010; Karpov et al. 2013; Beskin et al. ...

Underdetermined sets is a new type of data structures (terms) developed in Actor Prolog . ... The point is that an underdetermined set can include some indefinite rest (a tail) like a list in usual Prolog . At the same time, the order of elements of an underdetermined set can be arbitrary one and it does not affect results of unification of underdetermined sets. Moreover, Actor Prolog guarantees that a rest of an underdetermined set never contains elements that are explicitly given in the set. ...

... 8, ``Celestial Mechanics'', 2002 Rotation theory of celestial bodies: dynamical relations of the pole motion and nutation Yu. ... Problem By construction Earth rotation theory the studies of the precession--nutation motion and pole motion are considered usually separately. ... The angle Q between the polar axis of inertia and axis of rotation is small (of order 10 \Gamma6 ). ... The perturbation theory of the Earth rotation has been constructed in the elastic Andoyer and angle--action variables. ...

II- », - 01.03.02 ­ : : - (01.03.02 ­ , - ) , : . 5 : 1) Belova, O. M.; Bychkov, K. V.; Rudnitskii, G. M. Cooling time of shockheated gas in the atmospheres of Mira Ceti long-period variable stars // Astronomy Reports, -- 2014. Vol. 58, Iss. ... 2) Colom, P.; Lekht, E. E.; Pashchenko, M. I.; Rudnitskii, G. M.; Tolmachev, A. M. Investigation of the OH and H2O maser emission from the semiregular variable HU puppis // Astronomy Letters, -- 2014. ... 546. Vol. 546, id.A16, --P. 75. ...

This section of library contains information about "classic" Star Catalogs. ... For a Henry Draper Catalog 272149 stars have received a total of 531,211 identifications in 7 сatalogs: . 270456 - in Astrographic Catalogue ( "Carte du Ciel", 4M), . 251943 - in Guide Stars Catalog (GSC), . ... A file with information on the components of 1788 of multiple systems in catalog HDEC (3681 component, or a combination thereof, with 4054 recording). ... A file with information about 21971 variable stars. ...

Astronomy Discussion Forums . ... God and Science ћ SETI ћ Software ћ UFO ћ XEphem . ... SETI Assumes ET Doesnot Care About Can Being Detected What If . ... Post Message | ... My search on how to go undetected in space and SETI Search for Extraterrestrial Intelligence SETI. ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

. Variable stars - are characterised by the changeable glifter. There are eclipse twin stars and pulsing variable stars (cepheids) with the periodical changing of a glifter, eruptive stars, pulsars and closed twice stars. Back .

NMW survey overview . Access image archive . ... The New Milky Way survey aims to detect bright (V<13.5) optical transients near the Galactic plane using an automated wide-field (8x6 deg.) system capable of surveying the whole Milky Way area visible from the observing site in one night. ... All images obtained during the transient search survey are available online (please use the image archive access form ). ... Images per field: . ... Images per night: . ... Milky Way imaging time: . ...

... VaST is a software tool for finding variable objects on a series of astronomical images. ... VaST performs object detection and aperture photometry using SExtractor on each image, cross-matches lists of detected stars, performs magnitude calibration with respect to the first (reference) image and constructs a lightcurve for each object. ... VaST FITS image viewer ./pgfv . ... Part I" PZP, vol. ... K. V. Sokolovsky, S. A. Korotkiy; "New Variable Stars Discovered by the NMW Survey" PZP, vol. ...