... HST . ... Data . ... HST Overview . Overview . ... Cycle 24 Announcement . ... Retrieving HST Data . ... Instruments . ... Grism Spectroscopy . ... UVIS Flats . ... Instrument Handbook . Data Handbook . ... The Wide Field Camera 3 (WFC3) is a fourth-generation UVIS/IR imager aboard the Hubble Space Telescope (HST). WFC3 was installed in May 2009 during HST servicing mission 4, and replaces the Wide Field Planetary Camera 2 (WFPC2). ... ISR 2016-09: WFC3 Cycle 22 Proposal 14007: UVIS Gain . ...

Prime focus adapter . The optical reducer is mounted on the universal adapter of the prime focus, which contains two movable bundles of fibers for the off-axis guiding, lamps for the calibration of the wavelength scale (a He-Ne-Ar lamp) and for flat fielding (a continuous spectrum lamp). The lamps are placed in an integrating sphere providing uniform illumination of the field. ...

Prime focus adapter . The optical reducer is mounted on the universal adapter of the prime focus, which contains two movable bundles of fibers for the off-axis guiding, lamps for the calibration of the wavelength scale (a He-Ne-Ar lamp) and for flat fielding (a continuous spectrum lamp). The lamps are placed in an integrating sphere providing uniform illumination of the field. ... View on adapter from the main mirror's side: . ... 3) - step motors for guiding bundles moving; . ...

Blackholes2 Forum Message . ... Post . ... A Field Does Not Contain Energy? ... Post Message | ... Here are two sites of many which use rest mass terminology. http://www.iop.org/EJ/abstract/0026-1394/41/5/S04/ . ... This site refers to the energy contained in a static gravitational field. http://www.ias.ac.in/currsci/mar25/articles27.htm . ... www.astronomy.net . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... celprm Struct Reference . ... It consists of certain members that must be set by the user ( given ) and others that are set by the WCSLIB routines ( returned ). ... Given and returned) This flag must be set to zero whenever any of the following celprm struct members are set or changed: . ... Given ) The native longitude, [deg], and ... double celprm::theta0 . Given ) ... the native latitude, [deg], of the fiducial point, i.e. the point whose celestial coordinates are given in celprm::ref [1:2]. ...

... Previous: Generalized Linear Multi-Frequency Imaging in VLBI . ... At Astronomical Observatory of Valencia University (OAUV), CCD observations of asteroids and big planets satellites are obtained since 2001 with a big format camera and several telescopes. ... Software for comparison of single and overlapped CCD fields obtained at different epochs has been developed. ... After images measurement in CCD field, catalogue stars are identified and adjusted with images. ...

... Minute Values of Geomagnetic Field Components . ... AA 1868 - Present (3 hourly and daily) (monthly) (yearly) (Lists and histograms of geomagnetic disturbance and Solar Sunspots) KP_AP 1932 - Present (3 hourly and daily) (Lists and histograms of geomagnetic disturbance and Solar Sunspots) AE_HV 1957-75, 78-88 (hourly) AE_MIN 1978-881-6;198903;1990-94 (minute) DST 1957 - Present (hourly) PC 1975 - Present (15-minute) AMANAS 1959 - Present (3 hourly and daily) KMKNKS 1983 - Present (3 hourly) . ...

... This file is used by QLA and the SAS. ... PhotToNat contains three tables, viz. PHOTTONAT COINCIDENCE and DEGRADATION . The PHOTTONAT table contains coefficients used to calculate the MIC CCD framerate for a given detector configuration (stored in the binary field PARAM00). ... The format of the binary table in the PHOTTONAT extension follows the description of the CCF ICD [ 5 ]. ... The table COINCIDENCE holds the coefficients used to parameterize the empirical coincidence loss curve. ...

... 2 Magnetic Field . ... A magnetized bar has its power concentrated at two ends, its poles ; they are known as its north (N) and south (S) poles, because if the bar is hung by its middle from a string, its N end tends to point northwards and its S end southwards. ... That flow became known as an electric current . ... An electric current produced a magnetic force! ... The fundamental nature of magnetism was not associated with magnetic poles or iron magnets, but with electric currents . ...

... 2 Magnetic Field . ... A magnetized bar has its power concentrated at two ends, its poles ; they are known as its north (N) and south (S) poles, because if the bar is hung by its middle from a string, its N end tends to point northwards and its S end southwards. ... That flow became known as an electric current . ... An electric current produced a magnetic force! ... The fundamental nature of magnetism was not associated with magnetic poles or iron magnets, but with electric currents . ...

SINGULAR POINTS IN THE SOLAR CHROMOSPHERE . ... In the structure of the solar chromosphere, containing information on the configuration of the magnetic field, we have found and identified all the main types of the singular points ( see Fig. 1 ), which are known as inherent features of the 2-D vector field. ... The main types of the singular points are the node, the focus, the center, and the saddle. ... Singular point of the focus type in the solar chromosphere. ...

... Class . ... java.lang.Object ij.gui.Roi ij.gui.PolygonRoi ij.gui.PointRoi . ... public class PointRoi . ... This class represents a collection of points. ... PointRoi (int[] ox, int[] oy, int points) . ... Constructor Detail public PointRoi (int[] ox, int[] oy, int points) . ... Creates a new PointRoi using the specified offscreen coordinates. public PointRoi (int sx, int sy, ImagePlus imp) . ... Returns a copy of this PointRoi with a point at (x,y) added. public PointRoi subtractPoints ( Roi roi) ....

. In this talk we will consider the following problem : which isogeny classes of abelian varieties over a finite field contain the Jacobian of a curves ? We will give the history of this question through the genus 1,2 and 3 cases. This will lead us naturally to a conjecture of Serre on non hyperelliptic genus 3 curves. Moreover we will give a complete answer for the case g=3 over F_2^(2n) . Go to the Laboratoire Poncelet home page. Site design by Paul Zinn-Justin

... Bojan Nikolic web pages home . ... I've uploaded a new version the "bnlib" library that amongst other items contains the code to generate very large simulations of turbulent fields. ... http://www.mrao.cam.ac.uk/~bn204/alma/memo-turb.html#Current+version+of+library%3A+V1.3 . ... http://www.mrao.cam.ac.uk/~bn204/publications/2008/ALMASim08.pdf . Please enable JavaScript to view the comments powered by Disqus. blog comments powered by Disqus . Copyright 2012, Bojan Nikolic feedback welcome ...

... Magnetic fields, subatomic particles, etc., traveling in different directions fill the universe. Do they deflect or otherwise affect one another? If so, isnт??t the information we get from them distorted? ... Neutrino astronomy, which is still in its infancy, is attractive because neutrinos interact so weakly with matter that few of these distorting effects occur. Get instant access to subscriber content on Astronomy.com! ...

... We have compared visualized fields of GSC and USNO A1.0 catalog with unpublished photographic finding charts that were sent by L. Plaut to the compilers of the GCVS. ... 7-15 A9 --- GCVS GCVS or NSV name 17-25 F9.4 --- GSC GSC number 26 A1 --- NoteFlag *Nonstar (GSC) flag 28-29 I2 h RA2000GSC.h Hours RA (GSC), equinox 2000.0 31-32 I2 min RA2000GSC.m Minutes RA (GSC), equinox 2000.0 34-38 F5.2 s RA2000GSC.s Seconds RA (GSC), equinox 2000.0 40 A1 --- DE2000GSC.- ... Plaut, L., 1966, Bull. ...

... The database contains data of magnetic field observations obtained in the following observatories: Central astronomical observatory ( GAO ) , Crimean astrophysical observatory ( KrAO ) , Institute of terrestrial magnetism and radiowave propagation of Siberian division of RAS (Irkutsk) ( SibIZMIR ) , Institute of terrestrial magnetism and radiowave propagation (Troitsk) ( IZMIRAN ) , Shemacha astrophysical observatory of Azerbajanian AS ( ... GAO IZMIRAN SibIZMIR KrAO UsAO UrAO ShAO . ...

... September 15, 1998 . The NTT SUSI Deep Field . ... The above New Technology Telescope SUSI Deep Field photograph isolated a small patch of sky picked to contain no bright objects at all. A very long exposure was then taken, similar to the Hubble Deep Field , in order to see the many faint objects that are usually washed out by the light of bright foreground objects . ... This and other deep field images are being released for detailed inspection by anyone interested. ... About APOD > . ...

Astronomy Picture of the Day . ... 15.09.1998 . ... The above New Technology Telescope SUSI Deep Field photograph isolated a small patch of sky picked to contain no bright objects at all. A very long exposure was then taken, similar to the Hubble Deep Field , in order to see the many faint objects that are usually washed out by the light of bright foreground objects . ... September 1998 . ... NASA Web Site Statements, Warnings, and Disclaimers . ... Publications with keywords: universe . ...

... Summary of reduced ISAAC fields . ... This data release includes eight fully reduced VLT/ISAAC fields in J,H,K s bands covering 50 arcmin 2 of the GOODS region in the Chandra Deep Field South (CDFS). ... 8 ISAAC fields) . ... The 8 ISAAC fields which are part of this data release are superimposed onto a SOFI image (J+K) (part of a previous EIS data release). ... In one case (GOODS field 11/J-band), for which not enough standard stars were available, the ZP was boostrapped from previous SOFI/EIS data...