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. ...

Next: Order Extraction Up: Background Definition Previous: Background estimate by . ... The sky background component can be measured in spectra taken with an extended slit using the two commands DEFINE/SKY and EXTRACT/SKY . ... The command EXTRACT/ECHELLE performs an average extraction of the sky background using these offsets, optionally fiters for cosmics, and provides an extracted spectrum in a format similar to the one resulting from EXTRACT/ECHELLE . ...

... This paper describes the main algorithms used by the Einstein Level One processing to create the exposure masks and the background maps for Einstein IPC images, and how these algorithms were recreated in the IRAF environment. Our goal was to recreate the algorithms used by the Level One Processing to create exposure masks and background maps for Einstein Image Proportional Counter (IPC) data (cf. sections 2.5 and 2.7 of Harnden et al. ...

Next: Acknowledgments Up: HST Image Restoration with Previous: Results . ... To the desirable characteristics of the FMAPE algorithm, this development adds the capability of different degrees of smoothing in different regions of the image. This implies a variation in resolution in the restoration, allowing high resolution in high S/N regions and lower resolution with lower artifacts in poor S/N regions . ...

... The output timeseries has 4 columns (background subtracted source rate & error, background rate & error). ... Background corrections are not applied Input background rates table is empty ( warning ) corrective action : Background corrections are not applied Source and background rates les from di erent exposures ( warning ) corrective action : Background corrections are not applied (please, check the ODF les ) Background rates and region les have di erent EXP IDs ( ...

. When you enter a command it invokes a program. While this program is running it is called a process . Although there is only one copy of a program, any number of processes can be invoked which run this program. There are several commands which allow you to manage the processes that belong to you. You cannot do anything with processes belonging to other users. Running processes in the foreground . Running processes as background jobs . Managing background jobs . Monitoring processes . Killing a process .

Fire in a building calls for prompt action to evacuate occupants safely. ... Exit areas, corridors, aisles, and passageways must be kept clear at all times with no obstructions that could create a hazard. ... Some examples of the most common items found in hallways are carts, boxes, laboratory equipment, and furniture. ... Examples for means of egress from APO buildings are available at the end of Section 6 , titled ?Fire Extinguishers, Alarm Systems, and Procedures.? ...

Next: Recording Systems Control Up: Recording Systems. ... SCHED was originally written in about 1979 as the scheduling program for global VLBI observations using the Mark II recording system. That was a system capable of recording 4 Mbps on video tape recorders. ... The wide band recording system in use for VLBI for many years was the Mark III system. ... However, SCHED was capable of scheduling Mark III observations on systems that used the VLBA control files (VLBA, VLA, and Green Bank). ...

... Sherpa is a fitting environment in which Chandra data (and really, X-ray data from any observatory) can be analyzed. ... 1 ] Continue reading ?data analysis system and its documentation? ... Although ciao is not the only tool for Chandra data analysis, it was specifically designed for it. ... Tags: aperture photometry , background , background marginalization , background subtraction , celldetect , Chandra , ciao , EotW , Equation , error propagation , ldetect , local detect , wavdetect , X-ray . ...

... Abell 2218: A Galaxy Cluster Lens . ... Background galaxies. Gravity can bend light, allowing huge clusters of galaxies to act as telescopes, and distorting images of background galaxies into elongated strands. Almost all of the bright objects in this Hubble Space Telescope image are galaxies in the cluster known as Abell 2218. ... Retrograde Mars . ... Perhaps the original spiral nebula, M51 is a large galaxy, over 60,000 light-years across, with a readily apparent spiral structure. ...

Galactic Spiral Structure in H I Emission and Self-Absorption S. J. Gibson (NAIC) H I Self-Absorption (HISA) occurs when cold H I lies in front of warmer H I emission (HIE) at the same radial velocity. The map and spectra AT LEF T show HISA in the Perseus spiral arm in the Canadian Galactic Plane Survey (CGPS; Taylor et al. ... The basic components of the model are shown AT LEF T with all 3 types of CNM cells (shock-induced, local, ambient disk), but without lumpy dispersion in the velocity field. ...

Just beyond the main asteroid belt there exists a population of small objects orbiting the Sun at the same heliocentric distance of Jupiter. The combined action of Jovian and Solar gravity creates a stable dynamical haven for these objects near the so-called Lagrangian equilibrium points, in honour to the French mathematician Joseph Louis Lagrange who first demonstrated their existence and stability. ... Soon after its discovery it was realized that this asteroid is, in fact, a Mars Trojan. ...

T he Siding Spring Survey (SSS) is a Near-Earth Object search program that utilises the 0.5-m Uppsala Schmidt Telescope at Siding Spring Observatory, N.S.W., Australia. ... The mission of the Siding Spring Survey is to contribute to the inventory of near-earth objects (NEOs), or more specifically, the potentially hazardous asteroids (PHAs) and comets (PHOs) that may pose a threat of impact and thus harm to civilization. ... Based on the CSS Mission page . ... Siding Spring Survey Main Page . ...

USING THE CORRELATION BETWEEN ISGRI SURVEY RESULTS AND OTHER CATALOGUES TO AID SOURCE IDENTIFICATION John B. Stephen, A. Malizia and L. Bassani IASF-INAF, Via P. Gobetti 101, 40129 Bologna, ITALY, E-mail: stephen@iasfbo.inaf.it ABSTRACT In order to help in the identification of INTEGRAL/ISGRI sources, we have developed a software package which allows a rapid and detailed cross-correlation to be performed between various source catalogues. ... We show below some preliminary results from this analysis. ...

... 8, ``Celestial Mechanics'', 2002 EPM2002 and EPM2002C -- two versions of high accuracy numerical planetary ephemerides constructed for TDB and TCB time scales E. V. Pitjeva Institute of Applied Astronomy, St. Petersburg, Russia To be consistent with IAU resolutions ICRS should be treated as four-- dimensional reference frame with TCB time scale in which planetary ephemerides should be constructed. ... 2001, 80, 249-- 271. ... Standish E. M. JPL Planetary and Lunar Ephemerides, DE405/LE405. ...

The beam pattern and the polarization characteristics . of the radio telescope RATAN-600 . The Mueller matrix elements was computed via formulas [1]: . ... The BP were computed by the aperture method, proceeding from the fild distribution in the aperture of the primary mirror. The components of the main and cross-polarization components of the electric field in the vertical aperture of the primary mirror was computed in Frenel diffraction approximation. ...

... 2010 June 20 . Abell 2218: A Galaxy Cluster Lens . ... Gravity can bend light, allowing huge clusters of galaxies to act as telescopes, and distorting images of background galaxies into elongated strands. Almost all of the bright objects in this Hubble Space Telescope image are galaxies in the cluster known as Abell 2218. ... The cluster of galaxies Abell 2218 is itself about three billion light-years away in the northern constellation of the Dragon ( Draco ). ... About APOD | ...

... 14.1 Foreground color: the 'color' property . ... 14.2.1 Background properties: 'background-color' , 'background-image' , 'background-repeat' , 'background-attachment' , 'background-position' , and 'background' . ... Background properties are not inherited, but the parent box's background will shine through by default because of the initial 'transparent' value on 'background-color' . ... BODY { background: white url("pendant.gif"); background-repeat: repeat-y; background-position: center; } . ...

Next: Imaging Polarimetry with NICMOS Up: NICMOS Data Calibration and Previous: The Photometric Performance of . ... NICMOSlook and Calnic C . ... Extracting spectra from a large number of NICMOS grism images requires a convenient interactive tool which allows a user to manipulate direct/grism image pairs. ... NICMOSlook and Calnic-C are two programs that were designed to take advantage of the fact that the NICMOS grism mode typically consists of taking both a direct and a grism image. ...

Main planetology and astrophysics scientific tasks of gamma-spectrometry GRS and detector HEND . ... The origin of Mars . The ratio of natural radioactive isotopes 19 K/ 92 U will allow to estimate the temperature of proto-planetary cloud in the point of Mars creation . ... Abundance of main elements at valleys and at plateaus will allow to determine their ages . ... Water as a factor of Mars global evolution, the presence of water and water ice under the surface in the present time . ...