IBIS Data Analysis . ... IBIS . ... Flat Fielding - Introduction . The images obtained by IBIS will have intensity variations across the field of view that are not due to the solar image, but rather caused by instrumental effects that alter the observed intensity in each point of the field of view. ... IBIS Flat Fielding Techniques . ... Therefore, it is desirable to obtain the flat field measurements center on a point along the equator near the heliographic center of the solar disk. ...

... I.A.Dynnikov, Three-page approach to knot theory. ... Universal semigroup, Funktsional'nyi Analiz I Prilozhenija, 34 (2000), no.1, 29-40 (Russian); English translation in Functional Analysis and Its Appl. 34 (2000), no.1, 24-32. I.A.Dynnikov, Finitely presented groups and semigroups in knot theory. ... Math. 2000, no. ... English translation: Russian Math. ... A.Vershik, Numerical invariants of exponential groups, and a locally free approximation of braid groups (in Russian), Zapiski Nauchn. ...

Next: Hierarchical Wiener filtering Up: Noise reduction from Previous: The convolution from . Let us consider a measured wavelet coefficient at the scale i . We assume that its value, at a given scale and a given position, results from a noisy process, with a Gaussian distribution with a mathematical expectation , and a standard deviation : . ... We get: . ... This is done from the study of the variation of the noise between two scales, with an hypothesis of a white gaussian noise; . ...

... Determination of the direction towards the center of the Sun’s visible disc relative to spacecraft axes. ... The direction to the Sun is computed in the instrument coordinate system relative to the pixels' position on the linear CCDs, illuminated with the light passing through the coding mask. ... less than 0.1 deg./s                                        3 arcmin . ... Field of view, deg . in the plane OXZ                                           –60…+60° . ... Optical Solar Tracker (OSD) . ...

Blackholes2 Forum Message . ... Post . ... Shifts Are As Would Be Expected. ... Post Message | ... Red and blue shifts can be caused by velocities also. ... The expectd result would be a red or blue shift proportional to the aparent distance an object is from the observer. ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

For today's in class we will be working with spatial and temporal data sets which are quite noisy. Particularly, you have monthly rainfall totals for the following six locations in Oregon from the period 1950 - 1999. Eugene . Salem . Portland . Astoria . North Bend . Newport . There are many facets of what you can do with this data. Please explore the following questions with some degree of sound statistical reasoning and data presentation: .

. Computer Ephemeris. Lunar equatorial positions. Explanations. Each row contains at 0 h and 12 h of Time Dynamical Terrestrial: month, day, apparent right ascension (hours, minutes, seconds), apparent declination (degrees, minutes, seconds of arc) and geocentric distance (in Earth's radii).

Next session of a regularly functioning workshop "Computer Networks: Problems Solutions" is expected to be held on Tuesday, June 18, 1996 . Nikolay Isakiv nisa@novell.msk.ru . " Recommended Solutions for Educational Organizations from NOVELL " . Agenda of the Next Session . Agenda of the Previous Session . Return to CONPAS homepage . 

Operations in Point operations use the pointer to query sets about points, delete points in a set, and move points. In all cases where interaction is required, pressing the right mouse button with the pointer in the drawing area cancels the operation. ... Report on a point in a set . ... Press the left mouse button. ... Press Delete point with the left mouse button to activate. ... Move the pointer to the new location and press the left mouse button again to register the point's new location. ...

... Between them, the following points are touched: ICRF-2 structure, ICRF Core sources selection, and some expected user's requirements. ... Suggested total number of sources is close to the number of sources already observed in the IVS and VCS sessions, and for most of them reliable positions are derived, mostly for declination > -40 deg. ... So, results of source position time series analysis heavily depend on method used for time series computation and should be used with care. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Moon . ... Space Flight . ... Science Fiction . UFOs and Fringe Science . Monthly Sky Notes . ... NASA's Cassini spacecraft obtained this image of Saturn's moon Helene on June 18, 2011. Image credit: NASA/JPL-Caltech/Space Science Institute) . ... Your email address will not be published. ... Email * . ... Here you will find the latest news and views from the fascinating worlds of astronomy and space exploration. ...

... 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 . ...

October 14, 2006 ---------------- Version 3.1 ----------- As of this version, XmTel is considered stable for routine use. and it is useful for the control of telescopes for both amateur and professional uses. ... XmTel does not yet include the suite of pointing corrections that are already in the menu system (but disabled). ... With the offset correction a well-aligned small telescope will point to arc minute accuracy and well enough to put an object in a CCD camera field of view. ...

Next Previous Contents . This means that an interrupt happened that no driver expected. ... In many cases you can safely ignore this error message, especially if it only happens once or twice at boot-time. For boot-time messages, look at the messages which are nearby for a clue as to what is going on. For example, if probing is going on, perhaps a probe for a physical device caused that device to issue an interrupt that the driver didn't expect. ...

... Iowa Robotic Telescope | ... Talon is based on OCAAS, a software suite developed by software engineer Elwood Downey ( Clear Sky Institute ) for use at the University of Iowa ?s first remote facility (the ATF, or Automated Telescope Facility). ... XObservatory : Telescope Control Interface . ... This program calls upon and coordinates much of the interrelated portions of the Talon architecture, and forms the primary control panel for the telescope, dome, and peripheral systems when used locally. ...

... There is an opportunity to perform O-C calculations for objects which are absent in the data base of the package. Such objects can be described by orbital elements or by initial coordinates and velocities. ... On pressing Edit file button user has a possibility to look through the list of object elements or their coordinates and velocities to add or to change it. ... For example, the designations of objects in the list can occupy the last position in each line. ...

This page is devoted to information on Supernova 1999br in NGC 4900 . Basic information on this SN, including the last reported brightness, on this Supernova can be found on the main supernova page. ... Note that there is a very bright foreground star (mag about 11.3) located near the position of Supernova 1999br . ... Mag . ... vsnet-chat 1771 ] Host galaxy of SN1999br . ... from [ vsnet-alert 2870 ] SN 1999br in NGC 4900 . ... The host galaxy NGC 4900 has a rather peculiar appearance. ...

Ground Support of RadioAstron . Control and Tracking Stations . RadioAstron satellite control (command transmission, telemetry, orbit measurements) will be conducted from Evpatoria and Bear Lake control stations. ... Coarse orbit measurements will be carried out from control stations. Each measurement takes ten minutes. ... Orbit measurements at tracking stations give only radial component of spacecraft velocity but the measurements are going continuously during observing sessions. ...

From InfoWorld, August 3, 1992, page 24: Inifinite Disk raises hard disk capacity Chili Pepper Software's Infinite Disk, which compresses or relocates disk files based on usage patterns to increase users' hard disk storage, is in beta and expected to ship in the fall. Version 1.0 is for DOS users, with releases planned later this year to support Windows, OS/2, and LAN operating systems such as NetWare from Novell. The retail price is set at $189. (404) 339-1812.

THE IMAGE RECONSTRUCTION MODELLING IN THE SPACE EXPERIMENT WITH WIDE-FIELD GAMMA-RAY TELESCOPE WITH THE USE OF INTEGRAL SKY MAPS. , Russian Academy of Science, Profsoyznaya st. 84/32, Moscow 117810, Russia, E-mail: grif@dec1.npi.msu.su ABSTRACT The INTEGRAL sky maps were used for the simulations of the image reconstruction in the space experiment with a wide field (~2 sr) coding mask telescope elaborated for the all-sky monitoring in gamma-rays (0.05-1.0 MeV) ... Fig. ...