Four spacecraft: INTERBALL Tail probe (IB_TAIL), MAGION 5 (IB_MAG5), POLAR(NASA/ISAS), GEOTAIL (NASA) are considered. ... four spacecraft . ... INTERBALL . ... IB_MAG5) . ... NASA) . GEOTAIL . NASA, ISAS) . The four spacecraft . ... Modified 20 February 2000 . ... INTERBALL mission | ...

Four spacecraft: INTERBALL Tail probe (IB_TAIL), Auroral probe (IB_AUR), POLAR(NASA/ISAS), GEOTAIL (NASA) are considered. ... Orbital ASCII files | ... four spacecraft . ... INTERBALL . Tail Probe . ... ASCII files . ... Auroral probe . ... NASA) . ... NASA, ISAS) . ... The four spacecraft . ... INTERBALL mission | ...

XMM-Newton Science Analysis System . ... CORR_RATE - The count rate after the following corrections have been applied; . 1) A further point-spread function correction may be applied, to extrapolate the counts from 12 to 35 pixels (presently only done for UV observations) 2) Correction for dead-time. 3) Correction for the OM sensitivity-degradation. A key-word TDS_CORR is added to the table to record the correction value. ... XMM-Newton SOC/SSC -- 2008-07-02 ...

Next: The Quasi--Newton Method. Up: Outline of the Previous: The Newton--Raphson Method. ... At each iteration, one computes . ... Neglecting the second derivatives matrix , we obtain the ``normal equations'' and the Gauss--Newton direction . This so--called Gauss--Newton method is intended for problems where is small. ... The algorithm implemented here is a modification of that Gauss--Newton method, that allows convergence even for rank deficient Jacobians or for large residuals. ...

... February 6, 1999 . The First Explorer . ... Explorer I carried instrumentation to measure internal and external temperatures, micrometeorite impacts, and an experiment designed by James A. Van Allen to measure the density of electrons and ions in space. The measurements made by Van Allen's experiment led to an unexpected and startling discovery -- an earth-encircling belt of high energy electrons and ions trapped in the magnetosphere now known as the Van Allen Belt . ... About APOD > . ...

MAIN CHARACTERISTICS BASIC MODIFICATIONS TEST RESULTS . ... integrated drop tests in order to verify the strength of DM modified shell and equipment attachment points, functional check of new chairs and DM structure, determination of shock impacts onto the crew to verify landing safety; . ... nominal landing with the main parachute system (MPS) - drop #1 took place on December 24, 1998; . ... reduction of shock g-loads values at landing in accordance with decrease of landing speeds. MAIN | ...

... Sun images . ... Active areas . February : 2016 . ... The following regions with sunspots can be now observed on the Sun's surface . Group number . ... Group length (in degrees) . ... Beta . ... Coordinates and other characteristics of active regions are issued for February 09, 2016 00:31 UT The following H-alpha plages without spots can be currently observed on the Sun's surface . ... Coordinates and other characteristics of active regions are issued for February 09, 2016 00:31 UT . ...

Last modified: 30 November 1997 . Original version 27 November 1997 . Modified: 30 Nov . This WEB page contains the schedule for HALCA observations from November 24, 1997 to February 28, 1998. The February schedule may be modified slightly. ... VSOP V025c 1334-127 C Socr 18 Su:Jan-18 09:00 - 17:45 VLBA V129c1 3C84 C Socr 43 Th:Feb-12 00:15 - 03:00 VLBA Percentage of time 2.6 . ...

The AstroGuide . ... AstroGuide | ... AstroGuide Listing . ... See many more Astronomy Listings by: Category or Alphabet . Low cost beginner eyepieces. Send SASE for price list. ... Listed Since October 26, 2004 . ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

SPACETELESCOPESCIENCEINSTITUTE SPACETELESCOPESCIENCEINSTITUTE Calibration Activities: 3 February to 10 February . Proposal 4908 FOS Fine Alignment . SU's 51 & 52 (Large Aperture Fine Alignment) on February 4 Successfully implemented. ... TIPS: 2/10/94 FOS Koratkar SPACETELESCOPESCIENCEINSTITUTE . SU 04 (Redside Relative Aperture Location and Throughput for the large apertures > 0.3'') February 6 This activity was partially successful because of FOS safing caused by TALED overlight. ...

... 18sep08: bias for 3a/3b changed. Look at p2030 data (polA,polB summed) . 21sep08: bias for all beams changed. ... The wapps in 3 level mode take 100 MHz bw with 64usec sampling and 256 lags. alfa is centred at 1440 Mhz with the 100 Mhz 1390-1490 filter int. The total power was computed and then averaged to .1 seconds. ... Beam 6b is dead and p2030 is adding polA + polB. ... The a2010 data taken on 21sep08 was analyzed to check the stability of all the beams after the bias changes in alfa. ...

The Astronomical Society of Australia has been asked by STANDARDS AUSTRALIA to compile a list of "designated" optical observatories that are valuable resources for (i) research, (ii) education and (iii) community use. The ASA is the final arbiter of whether any particular observatory is so designated. ... Upon receipt of your application form, your observatory will be entered on a list of "Pending Designated Observatories" on the ASA Home Page. ... It will be emailed for you. ... Email . ...

... Barred Spiral Galaxy NGC 1365 . ... The First Explorer . ... The cylindrical 30 pound satellite was launched (above) as the fourth stage of a Jupiter-C rocket (a modified US Army Redstone ballistic missile) and achieved orbit on January 31, 1958. ... Fighting the glow of the setting sun and the city lights of Cape Town, South Africa, comet Hale-Bopp is just visible near the center of this panoramic view - photographed on May 3rd. Hale-Bopp's Fickle Ion Tail . ... Lightning on Jupiter . ...

... Eric Torrence 2/12 February 2004 Phase 0 (Now) DchDigis EmcDigis EmtSim trgDC L1Accept This IS the current SP6 (14.3.X) Base simulation code unchanged, only the interface elements (Digis, TsfLUT) Eric Torrence 3/12 February 2004 Phase I DchDigis TsfSim BltSim PtdSim EmcDigis EmtSim Glt Interface GltSim Deployed Validated Written Not written L1Accept Significant upgrade to L1 Simulation Could be deployed in SP6 to improve ... Eric Torrence 12/12 February 2004 ...

... March 25, 2006: Version 3.0.0 New control panel with an observing queue and a log Pointing to apparent position including proper motion precession and nutation to epoch of ... declination axis to polar axis non-orthogonality optical axis skew altitude- and azimuth-dependent mechanical effects encoder reference Control of telescope hardware August 20, 2006 Version 3.0.4 Modifications from Dan Azari adding features suported by the RC Optical Systems ...

Ranger to the Moon (1964 - 1965) . ... The Ranger spacecraft were designed to fly straight down towards the Moon and send images back until the moment of impact. Ranger 7 impacted in mare terrain modified by crater rays. Ranger 8 also impacted in mare terrain, but this area contained a complex system of ridges. ... Each Ranger spacecraft had 6 cameras on board. ... Launched: 28 July 1964 . ... Ranger 4 was launched on April 23, 1962, and became the first US spacecraft to impact on the moon. ...

In the conference room on October 28th: . click on the thumbnail photos to see larger size ones) . At the conference room on February 1st: . ... After the official part on February 2nd: . ... At the plenary session on August 6th: . At the regular and poster sessions on August 9th: . After all in working room on August 12th: . ...

... We demonstrate through numerical simulations that model parameters estimated with our technique are essentially bias-free, even when the average number of counts per bin is 1. ... The IW technique avoids such biases by estimating through successive iterations, where for each iteration, j, , and the best-fit parameters are determined by minimization of . ... In our sample, we find that the minimum values and best-fit parameters converge after about 6 iterations. ...

Solar Large-Scale Chains: Some Events . ... The chains appear to light up separators or quasi-separatrix layers between different interacting large-scale magnetic flux systems in the global solar magnetosphere and, in particular, to outline large-scale coronal structures involved in the CME process. ... Some features of the chains and their relations to CMEs are illustrated for a number of halo CME-associated events. 23 events of 1997-2000 . ... Halo-CME-associated events of November 1997 . ...

. Please standby and you will be automatically connected to the new location of the unframed Supernova page. Or, click on the link above. If you have questions or problems, please email me at David Bishop dbishop@vhdl.org . Last modified: Mon Aug 27 12:40:15 EDT 2001