... The numbers of three types of compact binaries containing accreting NSs and BHs, which are most interesting from the point of view of their observational appearances, have been calculated as a function of time: i) X-ray transient source containing a NS in an eccentric orbit around a main sequence Be-star (the observed prototype: A0535+26), ii) BH The evolution of the selected types of X-ray binaries during the first 10 million years after the starburst onset is presented in Fig. ...

General Forum Message . Forums: . ... The Telescope's F/number . ... The f/number (focal ratio) of any telescope tells two things about the telescope and that is it's intended purpose and it's photographic performance. The brightness of a star depends on the telescope's aperture not the telescope's f/number. ... The f/number of any objective lens or a mirror of a telescope has nothing to do with the visual brightness of an image, the bigger the aperture the better. ... www.astronomy.net . ...

... Exposure Time Calculator (ETC) . ... ESO - Public Surveys . ... the recommended values to use for DIT, . ... Detector on-chip integration (DIT): seconds. to your chosen value - a separate page gives recommended values to use for DIT - for modes 1 and 2 below you may wish to start with the maximum recommended values as these will minimize the effect of read noise (a total object exposure of Y secs with DIT=X secs will produce Y/X lots of read noise) and give you a lower limit on the time needed. ...

... Minutes Group a (photocopy of the table with signatures and stamps) – one page. ... Theoretical round problems a – one page. ... Practical problem 7 ab – one page. ... Grid-lines for the practical problem 7 ab – one page. ... Picture to fill for problem 8 b – one page. ... Solutions of the practical round problems – not ready full (LOC jobs not done) – ?? pages. ... Observational round problems – one page. ... Dr. Michael G. Gavrilov, Founding Chairman of the International Astronomy Olympiad, . ...

... C Total number of scans in a cycle:4 Scan 930900005, UTC=2000-01-05T12:06:42, AST=2000-01-05T08:06:42 Object: U3489 nter Command (UPPER CASE) or Object Name: (cr will keep U3489 QUIT to stop converting, DRIVE to finish entire file with same object name, UNTIL to continue for num or until reaching scan, NEWCYCLE to change the number of scans in a cycle to num, SKIP [num | ... Offset 5400.000000 (5400.165333) Scan 930900011: U3489-3. Offset 5400.000000 (5399.659220) Scan 930900012: U3489-4. ...

... Classes . ... gTimeSpan Class Reference . ... gTimeSpan (const gTimeSpan &timeSpanSrc) . ... Operation: getDays() This method returns the integer days number stored in the gTimeSpan object. ... Operation: getHours() This method returns the integer hours number stored in the gTimeSpan object. ... Operation: getMinutes() This method returns the integer Minutes number stored in the gTimeSpan object. ... Operation: getSeconds() This method returns the integer seconds number stored in the gTimeSpan...

... Lets you work with numeric values. The Number object is an object wrapper for primitive numeric values. ... JavaScript 1.3: added toSource method . ... value . ... JavaScript 1.2: Number(x) now produces NaN rather than an error if x is a string that does not contain a well-formed numeric literal. ... The following example uses the Number object's properties to assign values to several numeric variables: biggestNum = Number.MAX_VALUE . ... ECMA-262 JavaScript prints the value Number.NaN as NaN . ...

... In the above example, the second region uses the global coordinate system (PHYSICAL by default). ... Supported systems include: name description ---- ----------- PHYSICAL pixel coords of original file using LTM/LTV IMAGE pixel coords of current file FK4, B1950 sky coordinate systems FK5, J2000 sky coordinate systems GALACTIC sky coordinate systems ECLIPTIC sky coordinate systems ICRS currently same as J2000 LINEAR linear wcs as defined in file In addition, two mosaic coordinate ...

THE RELATIVE MONTHLY MEAN SUNSPOT NUMBER ON NOVEMBER 2012 HAS MADE Wnov.= ... Weekly Bulletin on Solar and Geomagnetic Activity Highlights on 26.11 - 02.12.2012, Forecast on 03 - 10.12.2012, Carrington Rotations 2130, 2131 (04,86.11, 02,17.12.2012) SUNSPOT-FORMING ACTIVITY OF THE SUN WAS REMAINED ON THE AVERAGE LEVEL. ... NEXT WEEK THE LEVEL OF SUNSPOT ACTIVITY IS EXPECTED TO BE THE AVERAGE AND THE LAST TWO DAYS-ON LOW LEVELS. ... NEXT WEEK THE GEOMAGNETIC CONDITION IS EXPECTED UNSETTLED AND QUIET. ...

... public class CurveFitter . ... static int . ... Field Detail public static final int STRAIGHT_LINE . ... public static final int POLY2 . ... public static final int POLY3 . ... public static final int POLY4 . ... public static final int EXPONENTIAL . ... public static final int POWER . ... public static final int LOG . ... public static final int RODBARD . ... public static final int GAMMA_VARIATE . ... public static final int LOG2 . ... public static double f (int fit, double[] p, double x) . ...

SIMPLE = T / file does conform to FITS standard BITPIX = -32 / number of bits per data pixel NAXIS = 2 / number of data axes NAXIS1 = 1138 / length of data axis 1 NAXIS2 = 1114 / length of data axis 2 TELESCOP= 'UT1 ' PI-COI = 'C. Cesarsky' / Name of PI and COI ORIGIN = 'ESO/EIS ' / Data processed by RA = 53.0917713808546 / RA (J2000) at start (deg). ... RADECSYS= 'FK5 ' / Coordinate reference frame. ... TOT-IMAG= 125 / Total number of images. ... MOSTILES= 21 / Total number of tiles in MOSAICID. ...

... The sample of the Local Volume galaxies (distance smaller than 10 Mpc) gives a unique opportunity to study the properties of galaxies including the weakest objects: the absolute magnitude M B -10 and the virial mass M vir 10 9 M x263C;. ... Luminosity function of the Local Volume galaxies. ... The luminosity functions for galaxies are presented: red dashed line - from the 2dFGRS survey (Norberg et al. 2002); blue dash-dotted line - from the SDSS survey (Blanton et al. ...

... Satellites of the planets are assigned a provisional designation (indicating year of discovery) by the Central Bureau for Astronomical Telegrams ( CBAT ) upon satisfactory demonstration of the existence of a new object. ... In the past, Comets were first given a provisional designation, consisting of the year and a lowercase letter indicating the order of discovery in the year (e.g., 1994a was the first comet discovered or recovered in 1994, 1994b the second, etc.) ... Names .. ...

Preface The necessity of the preparation and edition of such intricate publication, that is the printed version offered to the reader, of geoinformation system including the chronological catalogue and evolutionary database of the global tropical cyclogenesis is dictated, in opinion of the authors, whole number of objective circumstances. ... It derivates the serious dissensions in the initial ('raw') information as well as in databases and archives of regional cyclogenesises. ...

... CATS is being expanded continuously. Now (March 1997) it comprises over 150 catalogs and big tables including most of the RATAN--600 catalogs, ninety the biggest world radio astronomical catalogs with number of objects more than 1500, hypertext documentation and full scientific references for every catalog (3 Mb), systems of coordinates transformations, software for spectral data processing, and occupies 450 Mb, while most of catalogs storaged in compress (gzip) files. ... 1996; Trushkin et al., ...

... It is 1st August, and you are hoping to observe a number of bright galaxies from a catalogue. ... You used the normal Vega magnitude scale. You now want to compare your B-K colour against the published colours of another, supposedly similar star you found in the literature. Your colour: B-K = 3.43 Literature colour: B-K = 3.41 Unfortunately, when you read the small-print in the literature paper, you found that the published colour used AB-magnitudes, not Vega magnitudes. ...

... SEARCH ASP SITE: Match ALL words Match ANY word . ... Astronomy . ... Hubble Space Telescope Images: http://hubblesite.org/newscenter/newsdesk/archive/releases/image_category/ . ... The Chandra x-ray telescope (in orbit around Earth) has been sending back a wide range of images of what deep space objects would look like if seen with "x-ray sensitive" eyes. ... Web Sites for Asking Astronomy Questions . ... Ask an Astronomer for Kids: http://coolcosmos.ipac.caltech.edu/cosmic_kids/AskKids/index.shtml...

... Bad Astronomy . ... Bitesize Astronomy . ... Mad Science . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... At what rate are photons collected when HST is viewing objects billions of light years away? ... Part of my job is to figure out exactly this number-- for an object of a given brightness, how many photons do we see in our camera aboard Hubble? ... Even over the area of Hubble's 2.4 meter mirror, only a handful of photons are counted every second. ... 2008 Phil...

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. ...

RELATIVE SUNSPOT NUMBERS Description of Data from SGD Explanation of Data Reports: Relative Sunspot Numbers -- The relative sunspot number is an index of the activity of the entire visible disk of the Sun. ... The provisional daily Zurich relative sunspot numbers, Rz, were based upon observations made at Zurich and its two branch stations in Arosa and Locarno and communicated by M. Waldmeier of the Swiss Federal Observatory. ... This indicates the uncertainty above and below the predicted number. ...