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" . ...

... Submitted by Al Takeda on 10/19/2013 04:25:44 . Lunar Penumbral and Aircraft Eclipse . I was setting up to take the first image when I viewed the aircraft crossing the moon. ... Canon 400mm f/5.6L + 1.4X (560mm), Unmodified Canon T1i DSLR, 1/4000-second, f/8, ISO 800, Processing with Photoshop, ATMoB Clubhouse, Westford, MA, 18 October 2013 . ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

Four spacecraft: INTERBALL Tail probe (IB_TAIL), CLUSTER II (ESA/NASA), POLAR(NASA/ISAS), GEOTAIL (NASA) are considered. ... four spacecraft . ... INTERBALL . ... IB_TAIL) . ... NASA) . GEOTAIL . NASA, ISAS) . The four spacecraft . ... Modified 28 August 2000 . ... INTERBALL mission | ...

... Changed time to 08:00-14:00 (AT, HO, MP, SH, HH) V125a Nov 01 Cancel 3C380 (VLBA, GO) VS07u Nov 03 Changed observing times (KA, HO, HH) V053c3 Nov 05 Changed observing times (VLBA) VS09q Nov 20 Cancel (GB, AR) V019b Nov 25 Changed observing times (AT, HH, MP, UD) V001a Dec 02 Removed AT VS03j Dec 03 Cancel (KA, MP, UD) V029a Dec 10 Changed times (MK, TI, AT, HH, MP) V035a1 Dec 21 Changed stop time (VLBA, GO, RO) Modified on Sep 26: Most changes are related to VSOP survey source additions. ...

... 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 ...

... 15-Nov-2010 15:36 . ... Apache/2.2.3 (CentOS) Server at www.wdcb.ru Port 80 ...

... An Education in Optics . Dissect & Modify the Camera . ... At the University of Arizona's Astronomy Camps, we dissect, modify, and reload disposed "One-Time Use" cameras to allow students to study engineering principles and to photograph the night sky. ... The KODAK One-Time Use cameras with (right) and without (left) the flash unit. ... The "One-Time Use" cameras contain at least six interesting optical components. ... Computer ray trace of the simulated optics in a One-Time Use camera. ...

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. ...

build_PRD_dataset (version 4/16/04) . ... o Modified 8/28/03 KWC - Create work directory, renamed . ... to build_prd_files. o Modified 1/28/04 KWC - Add support for a list of files in a pickle. o Modified 2/ 3/04 RSK - Add support for user change directory. o Modified 3/12/04 RSK - Add processing for differencing output with . ... o Modified 4/ 1/04 KWC - Fix definition of new_user_file_dict, make . file differencing an option. o Modified 4/16/04 KWC - Use new prd_file_data, difference_PRD_files . ...

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: Making backups with tar Up: Backups Previous: Selecting the backup tool . ... A full backup is often more laborius than incremental ones, since there is more data to write to the tape and a full backup might not fit onto one tape (or floppy). ... If you want to make backups every day and have six tapes, you could use tape 1 for the first full backup (say, on a Friday), and tapes 2 to 5 for the incremental backups (Monday through Thursday). ... Making backups with tar . ...

... Sun images . ... Active areas . October : 2014 . ... The following regions with sunspots can be now observed on the Sun's surface . Group number . ... Group length (in degrees) . ... Alpha . ... Coordinates and other characteristics of active regions are issued for October 09, 2014 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 October 09, 2014 00:31 UT . ...

... The accuracy of calculation of both INTERBALL spacecraft (SC) motion has been estimated at the IKI. ... The 30 days measuring intervals were used during the Tail probe (TP) orbital data treatment, and 15 days intervals - during the Auroral probe (AP) orbit determination. ... http://www.iki.rssi.ru/vprokhor/indap.htm for the Auroral probe; . http://www.iki.rssi.ru/vprokhor/indtp.htm for the Tail probe . ... http://www.iki.rssi.ru/vprokhor/ssc.htm , or http://www.iki.rssi.ru/vprokhor/amisan.htm . ...

... This thread uses PINTofALE to generate a simulated Chandra spectrum. ... define a DEM . ... pset marx .par ExposureTime=50000 OutputDir='sim_ marx ' \ ; GratingType='NONE' DetectorType=' ACIS-I ' SourceFlux=-1 \ ; SpectrumType='FILE' SpectrumFile='spec_ marx .dat' \ ; SourceType='POINT' DitherModel='INTERNAL' ; marx TSTART=2006.46 ; marx2fits sim_ marx / spec_ marx .evt ; dmextract infile= spec_ marx .evt[EVENTS][(x,y)=circle(4018,4141,10)] ; [bin pi=1:1024:1] outfile= spec_ ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2000 October 12 . HETE-2 Rides Pegasus . Credit: Courtesy MIT , NASA . ... Dropped from its mother ship, the Pegasus then successfully flew HETE-2 into orbit. HETE-2's mission is to hunt gamma-ray bursts, brief, random flashes of high energy photons from the distant cosmos. ... About APOD | ... NASA Technical Rep.: ...

... What is included * New levels : One Sounds : No Music : Yes Graphics : No Dehacked/BEX Patch : No Demos : No Other : No Other files required : * Play Information * Game : DOOM2 Map # : Map01 Single Player : Designed for Cooperative 2-4 Player : Designed for Deathmatch 2-4 Player : Designed for(yes, all were in mind when I made this) Other game styles : none. ... Permissions have been obtained from original authors for any of their resources modified or included in this file. ...

... 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. ...

. Made using Google Earth 2007 . Above: The GMRT antennas of the central array from space. The white, blurry objects are the antennas dishes. Above: The GMRT antennas of the central array from space. The position of the antennas are maked by symbols. Above: The GMRT antennas of the outer array from space. The position of antennas are maked by symbols. Last modified: Tue Apr 24 18:19:47 EST 2007

October 30-31, 1992 . ... Modified images of the October 30-31, 1992 event. (a) - This NRH image is adapted to show a very bright loop-like source over AR 7321 near the SW-limb identified with the X1.7 soft X-ray LDE event peaked on 30d at 17:30 UT (see the GOES-7 soft X-ray plot also at the upper right corner). ... Here and hereafter, the white features are radio filaments. (c) - This modified NRH image shows some large scale microwave blob chains and structures. ...

... Eclipse Moon Trail . ... Tonight, Friday the 13th, October's big, bright, beautiful full Moon will be in the sky, rising as the sun sets. ... Cassini Spacecraft Approaches Jupiter . ... Launched in 1997 and bound for Saturn in 2004, Cassini sent back the above image last week while approaching the giant planet Jupiter. ... Part of a binary star system only 8 light-years away, it was known in modern times to have a small companion star, Sirius B. N81: Star Cradle in the SMC . ... October 2004 . ...