... This document and the attached postscript figure document an analysis that I did to determine the optimum midpoint and required ranges for both the rotator and azimuth for the 2.5 M telescope. ... I simulate a series of drift scans on the sky for tracks that cover the northern survey area. These tracks cover the range in survey latitude of -60 to +60 degrees, spaced by 10 degrees. ... Along each track the azimuth, elevation, and position angle of the CCD is computed at 1 minute intervals. ...

... Tiny Tim has been used for generating Hubble Space Telescope ( HST ) point-spread functions (PSFs) for deconvolution, algorithm testing, proposal planning, and optical studies. ... Tiny Tim is a stand-alone program for simulating HST PSFs as viewed with the on-board imaging cameras (WF/PC-1, WFPC2, FOC, COSTAR/FOC). ... The measured aberrations for FOC f/96, WF/PC-1 PC6, WFPC2, and COSTAR/FOC are used by Tiny Tim . ... Figure: FOC f/96 observed and Tiny Tim model PSFs (pre-COSTAR) at 253 nm. ...

Next: Scattering properties Up: Polarization properties (transmitted radiation) Previous: Linear polarization: wavelength dependence . Traditionally, the main problem considered in connection with circular interstellar polarization is the meaning of the wavelength where changes the sign . ... This is also demonstrated by Fig. 19 (lower panel) which shows the wavelength dependence of the factors of linear and circular polarization for particles of magnetite as was done by Shapiro ([ 1975 ]). ...

... Explanations. Each row contains at 0h of Time Dynamical Terrestrial: month, day, apparent right ascension (hours, minutes, seconds), apparent declination (degrees, minutes, seconds), hour difference of declination (seconds), apparent radius (minutes, seconds), equation of time (hours, minutes, seconds), hour difference of equation of time (seconds), time of upper culmination of Sun (hours, minutes, seconds), change in moment of upper culmination when longitude changes on 1 hour to west (seconds). ...

ON THE IMPACT OF THE GALACTIC ABERRATION ON VLBI-DERIVED PRECESSION MODEL Z.M. MALKIN Pulkovo Observatory Pulkovskoe Ch. ... Corrections to adopted precession rate are usually computed from the linear trends in long-term time series of celestial pole offset (CPO), which are the differences between the measured and the theoretical coordinates of the celestial pole. ... CONCLUSIONS We have estimated the impact of GA on parameters of precession-nutation model derived from VLBI observations. ...

... Telescopes . ... Creation of the distributed net of control (DCN) of the 6 m telescope has been completed, which is based on the use of digital tracking drives and the means of commercial automatization to ensure the real-time processes of control and data acquisition. With changing to DCN, computer diagnostics of the majority of units of the telescope has been implemented, the reliability of its operation in the whole has been increased, its performance characteristics have been improved. ...

Astronomy Discussion Forums . Forums: . Atm ћ Astrophotography ћ Blackholes ћ Blackholes2 ћ CCD ћ Celestron ћ Domes ћ Education . ... Discussion Forums . ... Note The Change . Forum List | ... Post Message | ... www.astronomy.net . ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

Next: Special Cases: Supernova Explosion Up: Change of Binary Parameters: Previous: Mass change . The binary separation a changes differently depending on the mass exchange mode. ... If the mass transfer is conservative ( , i.e. const) and one may neglect the redistribution of the intrinsic angular momenta of the components, the total orbital momentum conservation law implies . ... the orbital separation always increases in such systems). ...

This section of library contains information about "classic" Star Catalogs. ... For a Henry Draper Catalog 272149 stars have received a total of 531,211 identifications in 7 сatalogs: . 270456 - in Astrographic Catalogue ( "Carte du Ciel", 4M), . 251943 - in Guide Stars Catalog (GSC), . ... A file with information on the components of 1788 of multiple systems in catalog HDEC (3681 component, or a combination thereof, with 4054 recording). ... A file with information about 21971 variable stars. ...

... ABOUT ST-ECF . ... Change the relative shifts in association file . ASNCOMBINE . Process and combine images in one or two NICMOS associations . ... Examine images in an association . ... Plot magnitude as function of subpixel position . ... Group images in associations . ... Makes flatfields corresponding to the output image of asncombine . ... Compute the pixel response function for an image created with asn combine . ...

In Actor Prolog a resident is a special mechanism that helps processes to inspect state of other processes. A resident observes the state of a specified (target) process and if the state of the process changes (for instance, after message handling) it proves a specified predicate of the process. ... Work of the resident. ... Any change of the list of target processes or arguments of resident function results in activation of the resident and repeated collection of information in the target worlds. ...

... Astronomical Observatory, Shevchenko Park, Odessa, 65014, . ... The XVI -th G. Gamow's Odessa Astronomical Summer Соnference-School, 14-20 August, 2016, Odessa, Ukraine . ... The XV -th G. Gamow's Odessa Astronomical Summer Соnference-School, 16-23 August, 2015, Odessa, Ukraine . ... The XIV -th G. Gamow's Odessa Astronomical Summer Соnference-School, 17-23 August, 2014, Odessa, Ukraine . ... The XIII -th G. Gamow's Odessa Astronomical Summer Соnference-School, 19-25 August, 2013, Odessa, Ukraine . ...

FIRST SCREEN . Input files : image with wedges and image with spectrum (fits or tiff format). ... What to do : First of all you must fill in the region which the profiles should be taken from, by pressing "range for profiles" button. ... SECOND SCREEN . ... THIRD SCREEN . ... In the first screen you can change the size of the image by pressing "CHANGE SIZE" button. ... After pressing "Next profile" button, click to the same spectral lines in the same order as you did in the first profile. ...

... 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. ...

... Next, the screen displays "Press 0 to align or Mode for Menu." Press "0" if you wish to begin Automatic alignment (or Easy Align, depending on your telescope model), or press Mode if you wish to choose a manual alignment method ("Automatic Alignment" displays, and you can press MODE to go through the menu to find other alignments). ... Note: If you press the "?" key while "Ctr Brightest Star" displays, the alignment star that AutoStar has chosen will display. ... Alignment successful" displays. ...

... ISC Kosmotras . Top Management Founder of ISC Kosmotras - Dr. Vladimir A. Andreev News . ... Dnepr launch record 17 August 2011. Cluster Launch of Dnepr LV 22 August 2013 KOMPSAT-5 Launch 21 November 2013. Dnepr Cluster Mission 2013 19 June 2014. ... According to the decision of ISC Kosmotras Board of Directors, Dr. Vladimir A. Andreev, Director General of ISC Kosmotras, has been appointed to a newly established position of ISC Kosmotras President. ... E-mail: info@kosmotras.ru . ...

... Recent Topics . ... MAO main . ... December Issue: World Changing Ideas . ... Тема: December Issue: World Changing Ideas . To view this email as a web page, go here. links.email.scientificamerican.com/servl.. ODAyMzY2Njk2S0 =0 . ... World Changing Ideas . ... Since 1845, Scientific American has chronicled ideas and inventions that have changed the world. ... Board Categories MAO main - Info - MAO - news - Flame Technical - Technical Support(Forum)(Техподдержка(Форум)) . ... MAO NASU . ...

Astronomy Picture of the Day . The Flaming Star Nebula from CFHT . ... Rippling dust and gas lanes give the Flaming Star Nebula its name. ... The bright star.. ... Inside the Eagle Nebula . ... A closer look at the Eagle Nebula, however, shows the bright region is actually a window into the center of a larger dark shell of dust. ... The telescope mirror, about the size of the Hubble Space Telescope mirror, is protected by a red covering. ... An Unusually Smooth Surface on Saturns Telesto . ...

Russian version of HP . ... StarCalc is the fastest professional astronomy planetarium & star mapping program for Windows 9x/ME/NT/2000/XP (StarCalc version for PocketPC computers you can found here ). ... Extensibility : This program is based on common "Plugin StarCalc interface to catalogs and object groups", which allows program to add new modules as Plugins. ... Welcome to the Pocket StarCalc Home Page: . ... Some bugfixes in eclipses" and line" plugins - see the new versions in downloads page. ...

... What is the notion time? ... Generally speaking, it is an order of changing events, an order of constantly changing conditions of solids, Universe - being. ... The time, determined for the given longitude, is called the local time . ... A uniform system of time counting - ephemeris time is tested by observations of the Moon turning around the Earth. Fully independent from astronomic observation uniform system of the time counting is based on the concept of atomic second (see quantum watches ). ...