FGS Instrument Handbook for Cycle 24 . ... Fine Guidance Sensor Instrument Handbook for Cycle 24 > Chapter 4: Observing with the FGS > 4.3 Position Mode Observing Strategies . ... 4.3.2 Drift and Exposure Sequencing . 4.3.3 Cross Filter Observations . 4.3.4 Moving Target Observation Strategy . ... In Position mode, the FGS can track a bright target (V ) whose motion is less than ~ 0.1 arcsec per second. ... Transfer mode observations of moving targets are discussed in the next section. ...

Telescope Jumps: One Cause is Found . ... One tries to take out the sag of the secondary cage as the telescope is pointed toward the zenith. The second component tries to take out changes in the secondary piston caused by temperature changes of the truss structure. ... Second, the jumps only occur when the temperature data causes motions of the piston which go in a direction opposite to the direction in which the sag component is driving the secondary. ... One has to wonder how this can occur. ...

XMM-Newton CCF Release Note XMM- CCF -REL-200 Update of EPIC MOS gain Martin Stuhlinger, Darren Baskill, Stephane Rives, Jenny Carter October 21, 2005 1 CCF components Name of CCF VALDATE EVALDATE List of Blocks CAL XSCS (start of val. period) (end of validity period) changed VERS. ag EMOS1 ADUCONV 0028 2005-07-24T00:54:36 2005-10-19T19:03:55 OFFSET GAIN NO EMOS2 ADUCONV 0028 2005-07-24T00:54:36 2005-10-19T19:03:55 OFFSET GAIN NO 2 Changes A ... CCD1, CCD4 and CCD5 were a ected. ...

lbw gain and turret position . ... A 2 deg turret step (2*.75= 1.5 arc minute on the sky) was used (about .5 beam widths). ... The green, blue, and dark red lines are all at about the same gain so the measured best position is at least .57 degrees above the surveyed position (it probably wouldn't hurt to redo this since we didn't go over the other side of the gain vs turret position curve). processing:x101/020401/doitsbh.pro The cband beam width at 5 Ghz is about 60 asecs. ... step Used . ...

All stars derive their energy through the thermonuclear fusion of light elements in to heavy elements. High temperatures are required so that the mutual electrostatic repulsion of the protons in each fusing atomic nucleus is overcome. ... Elements with more protons in their nuclei require higher temperatures. ... This sequence is now shown in the animation below. ... First Step of the Proton-Proton Chain Narration . Second Step of the Proton-Proton Chain Narration . ...

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . ... Information & tools for observers . ... Visiting Parkes radio telescope . ... The most striking feature of Fig.б? 1 is the group of four parallel period-luminosity (PL) sequences (A,B,C,D) brighter than 13 and the sequence E which consists of stars on the first giant branch (it also has an extension between sequences C and D - see Wood et al....

Please enter the lightcurve file name and period search parameters: . Lightcurve file: . ... Apply the Heliocentric correction and convert all dates to Terrestrial Time (TT)? ... Also, the Heliocentric correction cannot be applied to such lightcurves. ... This period search service is also available at the mirror sites: Mirror 1 , Mirror 2 , Mirror 3 , Mirror 4 . You may download the latest source code distribution and install the period search service at your own web server. ...

... 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 . ...

... You can learn how to use style sheets and how to position HTML content by reading the Guide to Dynamic HTML in Netscape Communicator . ... To return to the top of this page, jump to anchor 1 in this document . ... Jump to the second section A Cold Autumn Day in the mystery "A man from Nowhere". ... If you click on this link, you'll see a confirmation dialog box. ... If you move the mouse over and then away from The Man From Nowhere , a dialog box appears telling you what the link will do. ...

Contents] [Previous page] [Next page] Index] . This book describes how to use Dynamic HTML to incorporate style sheets, positioned content, and downloadable fonts in your web pages. ... Introducing Style Sheets . ... Style Sheets in Communicator . Using Cascading Style Sheets to Define Styles . ... Defining Style Sheets with the <STYLE> Tag . Defining Style Sheets in External Files . ... Combining Style Sheets . ... Style Sheets Ink Home Page . ... Positioning HTML Content Using Styles . ...

... Positions in 2000 - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec . Positions in 2001 - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec . Positions in 2002 - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec . Positions in 2003 - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec . Positions in 2004 - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec . ...

Full-Text Search . ... astro-ph . ... SAI VO . Search sort results by Date Relevance . ... Whitespace-separated words are treated as AND ed. Show 10 50 100 articles per page in Full Compact mode . Normalized to: Guide, D. 1 article(s) in total . ... Aldering, Greg. Antilogus, P.. Arsenijevic, V.. ... Goncalves, Anabela. ... SAI MSU . ...

Summary of SPHERE performance at NIH Ralf Siebenmorgen (PS) and Markus Kasper (PM) SPHERE performs in the NIH similar to what was achieved in Grenoble. ... IRDIS The IR and V filters are well mounted and the positioning accuracy is within a 1% pixel tolerance. ... The IRDIS detectors have a read-out noise 9.4 e-, a gain of 2e-/ADU and the dark current is <0.5e-/pixel/s. The instrumental background is still high. ... Centering of the pupil is achieved at an accuracy of 0.1% of the pupil diameter. ...

Educator's Guide to Sunspots . ... Naked eye observations of the Sun will result in blindness. The improper use of telescopes or binoculars will cause blindness much faster. ... Binoculars, with the front of one ocular covered, can be used to project a sharp image of the Sun on to a white piece of paper. ... Aim the binoculars by tilting them up and down and back and forth until the Sun shines through. ... Sharpen the image of the Sun on the paper by using the binocular's focusing knob or lever. ...

... NEAR to Asteroid Eros . ... 28.12.1998 . ... Credit: NEAR Spacecraft Team , JHU APL , NASA Explanation: On December 23, the NEAR spacecraft flew by asteroid 433 Eros . ... When NEAR is fully operational, it will likely provoke the world's largest telescopes to point not toward asteroid Eros but to positions indicated by another of NEAR's instruments: its gamma-ray burst (GRB) detector . ... December 1998 . ... 1999 2000 . ... Publications with keywords: NEAR project - 433 Eros - asteroid . ...

Next: Rotation Periods of PMS Stars Previous: Direct Monitoring of PMS Stars . Studies using direct detection of periods via rotational modulation have been carried out on stars in several young clusters which are near the zero--age main sequence (ZAMS), including the Hyades, the Pleiades and Persei (see Radick 1988, Schaller et al . ... Rotation in ZAMS clusters has a strong mass dependence. High--mass stars tend to rotate much more quickly than the low--mass stars. ...

... The CAPTION element is used to label a table or figure. Use the align attribute to specify the position of the caption relative to the table/figure. ... CLASS . ... The CLASS attribute is most commonly used to attach a different style to some element, but it is recommended that where practical class names should be picked on the basis of the element's semantics, as this will permit other uses, such as restricting search through documents by matching on element class names. ... ALIGN . ...

... to_tsvector( [ configuration , ] document TEXT) RETURNS TSVECTOR . Parses a document into tokens, reduces the tokens to lexemes, and returns a tsvector which lists the lexemes together with their positions in the document in lexicographic order. strip( vector TSVECTOR) RETURNS TSVECTOR . ... Returns the number of lexemes stored in the vector. text ::TSVECTOR RETURNS TSVECTOR . ... The text should be formatted like the vector would be printed by the output of a SELECT . ... Query Operations ...

... Impact on source motion in Galactic coordinate system is given by Kovalevsky (2003), Malkin (2011) l cos b = -A sin l, b = -A cos l sin b, where A = R0 02 /c is the galactocentric acceleration called hereafter the GA constant. ... We just have to return to the traditional many-centuries-old astrometric practice of modelling the position of a celestial object as a linear trend with two parameters: the position at the initial (conventional) epoch and the apparent (proper) motion. ... 2011). ...

. Comment on J1146-3328 . The derived position here is about 20" from that of the PMN survey position (Griffith & Wright 1993). The source is only detected on the shorter baselines and is probably resolved, although some smearing may be caused by the large position offset. VLBApls home page . Last modified: 16 Oct 2000