. Space Telescope Science Institute . Cycle 21 Phase II Proposal Instructions . help@stsci.edu . Chapter 5: Visits, Exposures and Exposure Groups > 5.6 Exposure Number [Exposure_Number] . 5.6 Exposure Number [Exposure_Number] . APT will assign a unique integer number to an exposure. The smallest exposure number permitted is 1 , and the largest is 999 . Note that exposure numbers for coordinated parallels must (and will be) sequential; see Section 6.3 on page 93 .

... casa::Primes . ... Creates a reference table of prime numbers, and some functions. ... This function returns the closest integer larger than number from the table of primes. static uInt . ... If there is no entry in the table of primes which is larger than number, a zero is returned. static Block < uInt > casa::Primes::cachedPrimes . ... This function finds the next largest prime than number, returns that value and stores it in the table of primes. static uInt casa::Primes::smallestPrimeFactor . ...

... Behemoth black hole found in an unlikely place . ... black holes . ... Observing springtime deep-sky objects with a large telescope . ... Could large numbers of black holes account for much of the "dark matter" estimated to exist in our universe? ... NASA, ESA, M.J. Jee and H. Ford (Johns Hopkins University) No, because the universe never had the raw material to grow enough black holes to account for current estimates of dark matter. Get instant access to subscriber content on Astronomy.com! ...

CONTENTS Volume 22 Number 1 (January 1995) . ... SPECTROSCOPY OF B STARS IN THE SMALL AND LARGE MAGELLANIC CLOUDS . ... THE STRUCTURE OF THE INTERSTELLAR MEDIUM TOWARDS THE GLOBULAR CLUSTER M4 . ... E. R. Houdebine & J. G. Doyle . UBV CCD PHOTOMETRY TOWARDS THE HALO OF M31 . ... A. G. Gunn & J. G. Doyle . ... 1995-1999 Irish Astronomical Journal, Downshay, 12 Heather Lea Avenue, Dore, Sheffield S17 3DJ, S. Yorkshire, United Kingdom WWW Contact: Alastair G Gunn Back to IAJ Home Page ...

... ESO is building what will be the World's largest optical telescope array, The Very Large Telescope (VLT). The VLT Project organisation is responsible for the design and construction of the Unit Telescopes, including enclosures, optics, adapter-rotators and coating unit. ... Unit Telescopes Overview - This page is outdated, an update is in process. ... Secondary mirror (M2 Unit) - This page is outdated, an update is in process. ... Coating Unit - This page is outdated, an update is in process. ...

... Formation of large-scale inhomogeneous magnetic structures in a turbulent convection". ... Magnetic fluctuations generated by a tangling of the mean magnetic field by velocity fluctuations are studied in a developed turbulent convection with large magnetic Reynolds numbers. ... This effect is caused by a negative contribution of the turbulent convection to the effective mean Lorentz force. ... The energy for this instability is supplied by the small-scale turbulent convection. ...

Next: Inspection of results Up: *fit* - Fit Data Previous: Verbose Mode . If the number of net counts for a source is less than it is impractical to fit the data in all 34 energy bits. However, if the flux is required, then a fit must be performed first. ... Fit will then calculate the normalization of the model and xflux can be used to determine the flux and luminosity of the source from the best fit model. xs> fit rebin=yes . ...

... The lava flow has visibly fewer impact craters than the background terrain, illustrating the general principle that crater numbers can reveal ages of surfaces. ... Dating Small Martian Features . ... The crater-counting system that scientists have used since the 1970s to determine the age of large geologic features on Mars will also allow them to date small features, such as riverbeds and lava flows, according to William K. Hartmann, a senior scientist at the Tucson-based Planetary Science Institute...

SiD Tracking using VXD Nick Sinev, University of Oregon Plan Motivation Track reconstruction algorithm Performance for single tracks Does it have any limits ? With backgrounds To do Motivation Tracking in SiD is a challenge, especially pattern recognition. ... Limitations caused by reconstruction speed consideration In the presence of high number of background hits, number of 3-point combinations used as track seed became enormous if we consider all combinations. ...

... Today this year's largest group of sunspots will cross the Sun's central meridian. ... The next day, the number of spots in the group reached five, and the day after, on June 2nd, it was possible to count thirteen sunspots on solar disk, which had been clear prior to this. ... This year's two most powerful active areas, which passed across the solar disk at the beginning of May, 2009, are set to appear in the Sun's eastern sector in two days, on June 6th. ...

... Meta Index / Home Page / Description / Output This gives the 2-sigma upper limit on the background subtracted source count rate. If the number of counts is small, i.e. there are less than 80 counts in the source region then the Bayesian upper limit is returned (see Kraft, Burrows and Nousek, 1991, ApJ 374, 344). ... Note this number is the upper limit for the count rate in the input source region before centroiding, optimisation or correction for encircled energy. ...

... In addition to the planets and their satellites the solar system contains a large number of smaller but interesting objects. There are thousands of known asteroids and comets and undoubtedly many more unknown ones. ... There are also some asteroids whose orbits carry them closer to the Sun than the Earth (Aten, Icarus, Hephaistos). Most comets have highly elliptical orbits which spend most of their time in the outer reaches of the solar system with only brief passages close to the Sun. ...

... In addition to the planets and their satellites the solar system contains a large number of smaller but interesting objects. T here are thousands of known asteroids and comets and undoubtedly many more unknown ones. ... There are also some asteroids whose orbits carry them closer to the Sun than the Earth (Aten, Icarus, Hephaistos). Most comets have highly elliptical orbits which spend most of their time in the outer reaches of the solar system with only brief passages close to the Sun. ...

... The Large and Small of M87 . ... Explanation: The small core of elliptical galaxy M87 appears to be energizing its whole galactic neighborhood. Recent images from the Very Large Array (VLA) of radio telescopes indicate that huge bubbles of hot gas not only exist but are still being created. ... The source creating and feeding the bubbles has been traced to jets pointing back to M87's center , where a supermassive black hole is thought to live. ... A Jet from Galaxy M87 . ... Hubble s Lagoon . ...

Taken at Mount Kent Observatory on the night of 2015-10-10 ========================================================== The image is of the Large and Small Magellanic Clouds looking toward the south celestial pole. The small cloud is at the top, the large cloud at the bottom of the image. Camera Model Name : ILCE-7S Image Size : 4288x2848 Lens ID : Sony FE 55mm F1.8 Exposure Time : 1 second F Number : 1.8 ISO : 51200 Date/Time Original : 2015:10:10 06:24:39

QUICK C COMPILER OPTIONS -MEMORY MODEL - /AS small model ( default ) /AC compact model /AM medium model /AL large model - OPTIMIZATION - /O enable optimization (same as /Ot) /Od disable optimizations /Ol enable loop optimizations /Ox enable optimization (same as /Otl) /Ot enable optimization -CODE GENERATION- /G0 8086 instructions ( ...

Next: Participants Up: Contents Previous: Cover This volume contains the papers presented at the fourth annual conference on Astronomical Data Analysis Software and Systems (ADASS IV) which was held at the Omni Inner Harbor Hotel in Baltimore, Maryland, from the 26th through the 28th of October 1994. ... To help keep up with new trends in software as they relate to advances in astronomy, the ADASS conferences are organized around certain topics of current interest. ...

... Organisers: Michel Balazard (CNRS, Laboratoire Poncelet) , Xavier Caruso (CNRS, Laboratoire Poncelet) , Michael Tsfasman (CNRS, Laboratoire Poncelet, Institute for Information Transmission Problems) , Alexey Zykin (Laboratoire Poncelet, State University Higher School of Economics) . ... Number theory seminar . ... One of the goals of the semester is to convey the essential unity of the subject, especially to young mathematicians who use number theory in their research. ...

Next: Proposed Facility Up: You are the Institute Previous: You are the Institute . Your main research interests lie in the very first stars and galaxies to form. Ever since those chaps at Caltech started finding large numbers of galaxies at redshifts up to about 6, the astronomical world has been in a frenzy of theoretical and observational activity. ... You, therefore, have turned your interest where nobody else has dared look: to really high redshifts. ...

... The planning and reduction programs are distributed with array sizes set large enough to let most observers work without difficulty. However, you might need to reduce a very large data set, or to deal with a very large number of passbands (9 is the nominal limit). ... The main problem is holding the matrix of normal equations during the iterations; on the other hand, star catalogs can be made quite large without paying much of a price in terms of performance. ...