... Stellar Evolution is driven entirely by the never ending battle between Pressure and Gravity . As imbalances are reached, the star is driven to find a new Energy source. ... Pressure and gravitational forces are equal, the star is stable and its core is sufficiently hot to fuse Hydrogen into Helium More about main sequence stars . ... The luminosity generated by the core fusion of Helium into Carbon is far greater than the shell luminosity associated with the fusion of Hydrogen into Helium. ...

... This table shows how each STEP-PATT pattern measures the background for a science exposure. Listed are the STEP-PATT number, the number of spectrum bins for which substepping occurs, the number of background bins measured, the diodes used to measure the background, the fraction of the total time spent measuring flux on the science diodes, the gratings for which the STEP-PATT is appropriate, and the shortest exposure that can be used for that pattern. ... Table 8.3: - STEP-PATT Specifications . ...

Bridge World Standard Bridge World Standard (BWS) is a system based on the majority preferences of approximately 125 leading experts and thousands of Bridge World readers. ... Jacoby transfers (splinter rebids; game raise is slam try; two diamonds plus two spades forcing only one round); two spades shows minors; three hearts invitational, major two-suiter; Texas transfers; Stayman (two-spade rebid invitational; two-heart rebid weak; minor rebid forcing); Smolen; three of a minor invitational; Gerber. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Space Flight . ... Earth Satellites . ... Leonid meteors seen from 13 km altitude aboard an aircraft during the 1999 Leonids Multi-Instrument Aircraft Campaign (Leonid-MAC). Comet Tempel-Tuttle provides the cometary debris for the Leonid meteor shower. ... Every 17-19 November Earth crosses Tempel-TuttleтАЩs orbit and the Leonids become visible. With clear, dark skies observers may see 10 to 15 Leonid meteors every hour on those mornings. ...

... The best annual meteor shower is the Geminids, which are expected to peak this year on December 13th at 18h. Some activity will persist until about Dec 15/16. Unfortunately this year's display will be spoiled by a Full Moon at maximum, but you should still see some of the brighter meteors. ... This is a live count of meteor showers based on visual data entered through the IMO electronic report form. ... Saturday, 13 December 2008 19:03 . International Year of Astronomy, Ireland National Node . ...

Next: Summary List of Setup Up: Setup Files Previous: Standard Setup Files Contents . The standard setup files described above (Section 3.6.1 ) can be used as examples. ... The first example is of a minimal setup file of a sort that might be imbedded in a SCHED input file. ... This example shows a setup file for dual frequency, wide spanned bandwidth, geodetic style observations. ... Next: Summary List of Setup Up: Setup Files Previous: Standard Setup Files Contents Craig Walker 2014-04-14 ...

... 22.12.1998 . ... The Cartwheel is part of a group of galaxies about 500 million light years away in the constellation Sculptor (two smaller galaxies in the group are visible on the right). ... Europa, one of the largest moons of Jupiter, has been the source of intense scrutiny since speculation increased of there being oceans beneath its icy surface. ... The top part containing the astronauts carried additional rocket fuel which allowed it to blast away, leaving the bottom part on the Moon forever. ...

... The improvement will be more pronounced in our crowded Wide Field Camera (WFC) images, and may be increased further through use of a more sophisticated method of combining the individual dithered images. Our analysis allows us to check for point spread function shape variations in the HST Planetary Camera (PC) field. ... In crowded field images, we are deriving information about the faint end of the luminosity function (LF) from the texture of the image background. ...

... DB25 Adapters . ... DB9 Adapters . ... This document shows how to make adapters from DBx connectors to 6-wire 6-position RJ11 (sometimes called RJ12) jacks for various devices. ... Where HSO/HSI are optional hardware flow control output/input: . ... Line 1 (no hardware flow control): RJ11 wire: 1 2 3 & 4 5 6 DB25 wire: 3 7 2 Line 2 (no hardware flow control): RJ11 wire: 1 2 3 & 4 5 6 DB25 wire: 6 7 20 One line per DB25 with hardware flow control: RJ11 wire: 1 2 3 & 4 5 6 DB25 w/DTR: 6 3 7 2 20 . ...

... Search system . ... Forget-Me-Not" information and searching system is developed to store and to work with unstructured fascimile electronic copies of paper documents (e.g., books, newspapers, incoming and outcoming business documents, etc.) as well as text documents in Windows 95/98/NT environment. ... Incoming text documents are converted by means of the Box Manager, which is a part of the "Forget-Me-Not" information system, into a dynamic archive - a storage of the text information images. ...

Next: Fitting the Blaze Up: Instrument Response Correction Previous: Instrument Response Correction . ... This flux has to be corrected for two effects in order to get absolute fluxes: first, for the echelle blaze effect, and second, for the chromatic response of the instrument. ... The solution adopted in the reduction, using the standard star љ , is to correct for both the blaze effect and the instrument response simultaneously. ...

130705 ephemeris tracking . The pnt command has been added to the aotcl interpreter in vxWorks (used for online datataking). within the online tcl interpreter pnt ? ... Load ephemeris file with pnt ephm ld . Track the ephemeris file . Ephemeris tracking was added to the pnt command on 05jul13. ... The new command includes loading an ephemeris file and then tracking using this file. ... The user then starts the ephemeris tracking by issuing the pnt track command: . ... cR current ra,dec . ...

To the IUM main page . Our Web site is written for the most part in Russian. ... Those who cannot read Russian are referred to the English version of our page, but they should be warned that nothing but general information on IUM is to be found there. ... The rest of this text is for those who can read Russian but cannot make their Web browser show Cyrillic letters to them. An immense part of our Web page is lists of titles of courses read (or being read) at the Independent University. ...

... Public . Science . ... Science Users Information > Observing with ESO Telescopes > Observing Tools and Services > Standard Stars Catalogues . ... Observing with ESO Telescopes . ... Publications with ESO Data . ... Large Programmes . ... ESO/GTC Programmes . Public Surveys Programmes . ... Phase 1 Proposals . ... Public Surveys Phase 2 . ... Science Data Products Forum . ... ESO Data . ... ESO Data Access Policy . ... Below follows a non-exhaustive list of on-line standard star catalogues. ...

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 . ... Meade's revolutionary LS LightSwitchтДв series of telescopes use advanced technologies to do what no other consumer telescopes have done before: take all the hassle out of using a telescope. ... LightBridge Series . ...

Emission Line Diagnostics in a ``No UV Bump'' Quasar PHL909 Smita Mathur, Belinda Wilkes, Martin Elvis and Jonathan McDowell Abstract PHL909 is a quasar with unusually low ultraviolet luminosity (blue bump strength C UV=IR = \Gamma0:20 compared to an average value of 0:4 (McDowell et al. ... The intrinsic continuum of PHL909 ( i.e. as seen by the BELR ) may thus be similar to the `standard' continuum, with a big blue bump, reddened along the line of sight. ...

XMM-Newton CCF Release Note XMM-CCF-REL-286 Astrometry: time-dep endent b oresight A. Talavera, P. Rodrґguez-Pascual, & M.Guainazzi i May 31, 2012 1 CCF comp onents Name of CCF XMM BORESIGHT 0022 VALDATE 2000-01-01T00:00:00 List of Blocks changed BORESIGHT OM ANGVAR EMOS1 ANGVAR EMOS2 ANGVAR EPN ANGVAR CAL VERSION XSCS flag No 2 Changes The CCF described in this Release Note implements for the first time a new concept: the timedependent boresight. ...

... A Hubble diagram for Quasars . ... The potential use of such relation as a cosmological probe is obvious: assuming no redshift evolution of the relation, the observed X-ray flux is a function of the observed UV flux, the redshift, and the parameters of the adopted cosmological model. ... In this framework, Guido Risaliti and Elisabeta Lusso (INAF-Arcetri Observatory) have recently published in the Astropysical Journal the first Hubble Diagram for quasars suitable for cosmological measurements . ...

... May 13, 1997 . Optical Transient Near GRB970508 Shows Distant Redshift . ... Explanation: The GRB distance scale controversy may have just ended with a flash . ... Most importantly, continued scrutiny showed that this optical transient had absorption lines with a redshift of about 0.8 - the distance scale of galaxies and quasars . ... Above is a "negative" image of the GRB970508 field , located near the north celestial pole, taken hours after the initial flash of gamma rays. ... About APOD > . ...

... Цвет: PLUSH BLUSH . ... Модель: SHOW ME OFF . Сезон: SS15 . ... Легкий, свободный и невероятно женственный топ Show Me Off с вязанными элементами будет смотреться так же утонченно как и платье. ... Бренд: Novline . ... Применяемость: Renault Logan . ...