... Meade Series 4000 Nebular Filters incorporate the very latest in interference coatings technology. ... Technical Basis of the Meade Broadband Nebular Filter: As shown in the transmission graph below, the Meade Broadband Nebular Filter strongly rejects the light of sodium- and mercury-vapor lights as well as natural airglow and auroral emissions. ... Meade Series 4000 Narrowband Nebular Filters . ... Meade Series 4000 Oxygen-III Nebular Filters . ... Meade Series 4000 Photo-Visual Color Filters . ...

... The SMS program is a critical endeavor to investigate whether the predictions of standard cold dark matter cosmology are consistent with the observed matter distribution in the Milky Way halo. It is the deepest, most extended search for optically elusive dwarf satellite galaxies and tidal streams to date, covering the entire Southern hemisphere. ... However only a few dwarf satellites have been found around the Milky Way to date - 22 dwarfs compared to 500-10,000 predicted by theory (Klypin et al. ...

Next: Radial velocity of the Up: Optical spectrum of IRAS04296 Previous: Observations and spectra reduction . ... However, molecular emission features are only very rarely observed in the optical spectra of PPNe. ... On the other hand, it is well known that cometary nuclei spectra show prominent Swan band emission. In both spectra of IRAS04296 we have discovered strong emission in the (0;0) and (0;1) bands of the Swan system of the molecule. ... Now consider the case of IRAS04296. ...

ATMoB "Open Cluster Observing Award " Guidelines Purpose: To promote observing among the membership of the Amateur Telescope Makers of Boston through participation in the Open Clusters Observing Awards program. Introduction: This awards program is oriented towards visually observing open clusters above magnitude 9.9. ... It turns out that a very unprejudiced and convenient method to dermine the limiting magnitude is to count the number of visible stars in certain areas on the sky. ...

Next: Amorphous magnesium silicate Up: Examples of data contained Previous: Examples of data contained . ... We have used the infrared optical constants of forsterite contained in the database for calculating the absorption cross sections of spherical and non-spherical particles in the Rayleigh limit (see Fig. The spectra are obtained by averaging the cross sections calculated for the three different crystallographic directions. ...

... Bad Astronomy . Misconceptions . ... Bad Astronomy : The Moon only shows one face to us because it is not rotating. Better astronomy : The Moon only shows one face because it is rotating, once every time it revolves around the Earth. ... Place the Moon model on the table about 30 centimeters (one foot) away with the X facing the Earth model. ... You'll see that to keep the X facing the Earth model, you have to rotate the Moon model as it goes around the Earth model . ... 2008 Phil Plait. ...

... Table of Contents - Index - PS reprint - PDF reprint . ... All RXTE telemetry will be archived in a hierarchical database consisting entirely of FITS Binary Tables. We describe an interactive tool, the XTE Data Finder (XDF). ... Our basic design contains a three level hierarchy: Master Index, Subsystem Index, and Data Table. ... The Master Index acts as an observation catalog with references to Subsystem Indices, while the latter contain configuration information and references to the Data Tables. ...

. True Color Image Gallery: Galactic SNR | Magellanic Cloud SNR . Images show regions used to extract spectra . Regions with red strikes are excluded . Background was subtracted from a region around or close to the SNR. Back to G263.5-02.7 Index . Chandra Supernova Remnant Catalog . Main Page | Galactic SNR | Magellanic Cloud SNR . True Color Image Gallery: Galactic SNR | Magellanic Cloud SNR .

... This year's most powerful solar flare was photographed by TESIS telescopes in the southern hemisphere of the Sun on July 5th, 2009. ... Events of such power are unique and are only observed during maximal solar activity. ... For two months, all the activity of the new solar cycle was connected with areas of this belt, including the first solar flares and coronal mass ejections of the year. ... Nevertheless, this year's largest solar flare occurred in the southern belt. ...

101206 : M57 - Ring Nebula; Jack Dembicky, Apache Point observer . 101206 : M27 - Dumbbell Nebula; Jack Dembicky, Apache Point observer . 101206 : M1 - Crab Nebula; Jack Dembicky, Apache Point observer . 101206 : NGC 300 - B22 - Horsehead Nebula, Jack Dembicky, Apache Point observer . ... 090106 : Eskimo Nebula (planetary); John Barentine, Apache Point observer . ... 110398 : "Einstein Cross" Gravitational Lens System 2237+0305; Princeton University and Apache Point observers . ...

Welcome to the 10C Survey website! ... The first 10C Survey results from an area of 27 sq. degrees complete to 1 mJy and 12 sq. degrees complete to 0.5 mJy have now been released. ... The first results from the survey, which is the deepest extragalactic radio source survey of any significant extent (> 0.2 sq. degrees) above 1.4 GHz, including the deep 15.7-GHz source count are contained in AMI Consortium: Davies et al. ... For each field, deep and shallow areas have been defined. ...

... a greenish glow is often seen in the sky, known as the "Northern Lights." ... During magnetic storms, the glow may move southwards, and on occasion it can be seen in much of the US. ... A similar phenomenon is also seen in southern polar regions. ... Auroral light is produced at a height of about 100 km (60 miles) when fast electrons, arriving from space, slam into atoms and molecules of the atmosphere. ... The green light of the aurora puzzled scientists for many years, since it fit no known...

... Note: Click here a longer, much more comprehensive overview of the polar aurora . ... Magnetic Field . ... Aurora . ... 3b. Fritz Aurora . ... Electrons . ... Typical aurora (Dick Hutchinson ї) . In Alaska, Canada, Norway, Finland or northern Russia, on a clear night, a greenish glow is often seen in the sky, known as the "Northern Lights." ... Auroral light is produced at a height of about 100 km (60 miles) when fast electrons, arriving from space, slam into atoms and molecules of the atmosphere. ...

... Galaxies 99 Cosmic background with model of cloudy interstellar medium Yu. ... Figure 1: Averaged spectrum of the cosmic background I f in frequency range 0.25 200 MHz for the Galactic poles. ... First interpretation of the cosmic noise background spectrum at broad band frequency range 0.25 200 MHz with a model of the cloudy interstellar medium ISM is presented here. ... Synthesized background spectra I f for regions of the Galactic poles at the frequency range 0.25 200 MHz is presented in Fig. ...

... Exposure Time Calculator (ETC) . Survey processing . ... VISTA is a 4-m class wide field survey telescope for the southern hemisphere, equipped with a near infrared camera (1.65 degree diameter field of view at VISTA's nominal pixel size) containing 67 million pixels of mean size 0.34 arcsec and available broad band filters at Z,Y,J,H,K s and a narrow band filter at 1.18 micron. A wide field visible camera, if constructed, could also be used on VISTA. ... Tile . ... ESO VISTA Public Surveys . ...

... Сегодня: 10 апреля 2016 г. Космический корабль, который работает на солнечной энергии, вскоре может начать свой полет по Солнечной системе. Группа американских и российских ученых готовится запустить зонд с гигантскими пластиковыми "парусами", которые могут ловить солнечный свет подобно тому, как паруса яхт ловят ветер, пишет The Observer (перевод на сайте Inopressa.ru). ... The Observer: российские и американские ученые создали космическую яхту с парусами из солнечных батарей . ...

The AstroGuide . ... AstroGuide | ... Other Sites . ... AstroGuide Listing . ... See many more Astronomy Listings by: Category or Alphabet . A group who goes out in rural areas to observe mainly using PA gameland parking lots. ... They are an E-mail/telephone alerting service for observing. ... Erie, PA 16509 . ... Web Site . ... Web . ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... Coalsack Dark Nebula или Black Magellanic Cloud - темная туманность Угольный мешок (Caldwell 99) в созвездии южного полушария Крест / Южный Крест (Crux, Southern Cross, Crucis, Cru) .. ... Просмотр полной версии : Coalsack Dark Nebula или Black Magellanic Cloud - темная туманность Угольный мешок (Caldwell 99) в созвездии южного полушария Крест / Южный Крест (Crux, Southern Cross, Crucis, Cru) .. ... Поиск направления на Южный Полюс через звезды созвездия Крест / Южный Крест (Crux, Southern Cross) .:...

... Space Contents 1-2 YEAR 3-4 MONTH 5-6 DAY 7-8 BLANK 9-12 N (THE NORTHERN HEMISPHERE aa DAILY VALUE ) 13-15 BLANK 16-19 S (THE SOUTHERN HEMISPHERE aa DAILY VALUE ) 20-22 BLANK 23-26 M1 (HALF DAILY VALUE OF aa INDICES FOR THE GREENWICH DAY ) 27-29 BLANK 30-33 M2 (SECOND HALF DAILY VALUE OF aa INDICES FOR GREENWICH DAY ) 34-36 BLANK 37-38 CC_OR_K (QUIET DAYS CLASSIFICATION) 39-41 MONTHLY MEAN DATA: Loacated after the last day of the month. ...

In Actor Prolog a resident is a special mechanism that helps processes to inspect state of other processes. A resident observes the state of a specified (target) process and if the state of the process changes (for instance, after message handling) it proves a specified predicate of the process. ... Work of the resident. ... Any change of the list of target processes or arguments of resident function results in activation of the resident and repeated collection of information in the target worlds. ...