... Sky Pollution Rejection Filters and What They Reveal About Nebulae . ... Thursday, Jun 14, 2012 at 8:00 PM . Our speaker will demonstrate how filters such as Orion Telescope's Ultrablock filter allow observers to see emission nebulae clearly even when the sky is polluted because of nearby lighting. ... Please join us for a pre-meeting dinner discussion at Changsho, 1712 Mass Ave, Cambridge, MA at 6:00pm before the meeting. ... Jun . ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

... The variability of the spectrum of the optical component of the IR-source IRAS01005+7910 was discovered for the first time in the BTA spectra [1]. ... The spectral features include absorptions that form in near-photospheric layers, narrow envelope emissions, and emission-absorption profiles that form in photosphere-to-envelope transition layers (the wind). ... Discovery of spectral variation in the optical counterpart of IRAS01005+7910. ... Dashed line - envelope curve of all the SiII 5979 profiles ...

... Armagh Observatory 2001 July */ #declare Shining_Dwarf_Core = sphere{ 0,0,0 , 0.99 hollow on interior{ media{ absorption rgb 0.0 , 0.0 , 0.0 scattering { 5 rgb 1.0 , 1.0 , 1.0 eccentricity + 0.1 } density { spherical color_map{ [0.00 rgb 0,0,0 ] [ 0.05 rgb 0.1 , 0.1 , 0.5 ] [ 0.2 rgb 0.2 , 0.2 , 0.6 ] [ 0.5 rgb ...

CCD Forum Message . Forums: . ... CCD Tips and Techniques | Post . ... Colour Filter On A CCD . ... I was wondering if you could help me with a question I have about colour filters on CCD's: . For a CCD that is using a bayer colour filter on top of the pixel array, i have seen two different ways that this has been arranged: . ... www.astronomy.net . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

A computer controlled low light photometer for nightglow observations. Hardware units of portable photometer for low light measurements, especially night glow emission is described. ... Interface card contain three channels of 24 bit counter, 4 channels of 12 bit ADC and the buffer bus for the controlled motors of the altazimuthal fork mounting and filters wheel, the position encoders. ... Where N( ) is output signal photometer generated input light flux F( l ) . ... PMT # . 599 . ...

... The Real Reality Show: Would aliens be anything like us? ... The Real Reality Show: All about the Drake Equation . ... The Real Reality Show . ... Why is one of the three filters in the Hubble palette ionized sulfur? Is Sulfur really that prevalent in the universe? ... RELATED TOPICS: SULFUR . Sulfur is not terribly abundant in the universe. ... Get instant access to subscriber content on Astronomy.com! ... If you are already registered on Astronomy.com, please log in below. ...

... Iowa Robotic Telescope | ... Talon is based on OCAAS, a software suite developed by software engineer Elwood Downey ( Clear Sky Institute ) for use at the University of Iowa ?s first remote facility (the ATF, or Automated Telescope Facility). ... XObservatory : Telescope Control Interface . ... This program calls upon and coordinates much of the interrelated portions of the Talon architecture, and forms the primary control panel for the telescope, dome, and peripheral systems when used locally. ...

... Class . ... METHOD . ... java.lang.Object ij.plugin.filter.UnsharpMask . ... public class UnsharpMask . ... Unsharp masking subtracts a blurred copy of the image and rescales the image to obtain the same contrast of large (low-frequency) structures as in the input image. ... This method is invoked by a Generic Dialog if any of the inputs have changed (CANCEL does not trigger it; OK and running the dialog from a macro only trigger the first DialogListener added to a GenericDialog). void . ...

Next: Extinction efficiencies: general behaviour Up: Optical properties of cosmic Previous: Optical properties of cosmic . It is now evident that observed interstellar extinction cannot be explain using particles of only one kind. ... The intensity of radiation after passing a dust cloud is equal to . ... The interstellar extinction is . ... Next: Extinction efficiencies: general behaviour Up: Optical properties of cosmic Previous: Optical properties of cosmic root 2003-04-09 ...

GROUPS OF ALGEBRAIC TRANSFORMATIONS OF AFFINE VARIETIES FINAL REPORT FOR THE THREE YEARS KARINE KUYUMZHIYAN 1. ... The latter is an algebraic variety with the given field of rational functions and an infinitely transitive regular action of a group of algebraic automorphisms generated by unipotent algebraic subgroups. ... Quotient groups. ... Since over R there exist irreducible non-connected varieties, we cannot have even one-transitivity of any connected group of automorphisms. ...

Authors: V.A. Marsakov , T.V. Borkova , . ... It is shown that general populations of globular clusters and metal-poor field stars are components at least of three subsystems occupying different volumes in the Galaxy. The thick disk and proto-disk subsystems are genetically associated with the Galaxy. ... It is argued that heavy-element enrichment and the collapse of the proto-galactic medium occurred mainly in the period between the formation of the proto-disk halo and thick disk subsystems. ...

... Original Xiaomi Mi Position Activated Carbon Filter . Brand: Xiaomi . ... Package Contents: 1 x Original Xiaomi Mi Position Activated Carbon Filter . Цвет: узор черный/экрю . ... Цвет: серебристый . ... Цвет: серый . ... Пол: Женский . ... Цвет: Синий . ... Пол: Для девочки . ... Джинсовая куртка темно-синего цвета марки MAYORAL для девочек. ... Цвет: белый . ... Цвет: Черный . ... Пол: Мужской . ...

RTT150 . ... This search system is designed for generating the necessary information on series of pointings (observations of each source consist of sets of exposures with different filters and sometimes with different exposure times) for observed sources. Search results appear at the separate page as a table with the following data: . DATE - real (not evening!) observations date (in YYYY-MM-DD format); . ... Bin - minimal CCD binning mode (may vary during the observations); . ...

... Оборудование (Модераторы: LifeIsGood , Hornet ) > . Baader Protuberanz filter или фотографирование Солнца . ... Оффлайн . ... Благодарностей: 245 . ... 05 Декабрь 2009, 14:16:39 ? Где можно почитать о этом фильтре Baader Protuberanz filter с шириной пропускания 1.5A на 1.25". поиск не увенчался успехом.. ... Цитата: MAKsutik от 05 Декабрь 2009, 14:16:39 Где можно почитать о этом фильтре Baader Protuberanz filter с шириной пропускания 1.5A на 1.25". поиск не увенчался успехом.. ...

... Астрофорум - астрономический портал ? ... Астрономическое оборудование и аксессуары (Модераторы: zlyden , Denk36 ) ? Light-Green & Violet Filters . ... Сообщений: 3 056 . Рейтинг: +12/-0 . ... 09.11.2006 [11:42:41] ? ... filter_set.jpg (65.09 КБ, 363x226 - просмотрено 120 раз.) . ... 47-H_violet.jpg (17.7 КБ, 344x260 - просмотрено 120 раз.) Записан . ... Сообщений: 2 768 . ... Ответ #1 : 09.11.2006 [11:43:32] ? ... Последнее редактирование: 09.11.2006 [11:47:33] от Вячеслав ? ...

To main of Laboratory . The research work and design of optical and optical-electronic devices are carries out by laboratory staff: . ... Lens: . ... In the layout 1 prism systems perform functions of dispersive element, corrector of aberrations, optical reducer. ... Spectral range 200 - 400 nm; . ... Back Forward . ... The main corrector's function are compensation of field aberrations of the main spherical mirror of a telescope (diameter of 600 mm, f'=1200 mm) and increase aperture ratio. ...

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: . ...

Astronotes Armagh Planetarium's Stellar Blog! ... Stars . ... Telescopes and Observatories . ... The majestic star-forming region in the Lagoon Nebula. The pale ring to the right is an internal reflection in the telescope.€а (Image credit: ESO/ VPHAS+/ V. Kalari and J. Vink (Armagh Observatory) . ... The 18 component images were further processed twice. ... Venu and his colleagues use images like this to identify individual young forming stars in the Lagoon Nebula and determine their ages. ...

... A new version of a polarization analyzer ensuring parallel measurements of six polarization components of spectral lines is considered. ... A new version of the polarization analyzer, which ensures simultaneous measurements of six polarization components of a spectral line, is considered. ... One of the widespread schemes for magnetic fields measurements includes an tunable optical filter, an adjustable polarization analyzer, and a two-dimensional CCD array placed in the solar image plane [1, 2]. ...

... Pulsars offer a variety of observables for study of interstellar scattering. Observations of scattering of nearby pulsars and intra-day variable quasars point to the existence of a component of the interstellar medium (ISM) which has properties quite different from the more distant, diffuse ISM. ... The time series of electric field emitted by the pulsar is convolved with an impulse-response function due to scattering, when sampled at the observer plane [1]. ... Nearby interstellar scattering. ...