FOS APERTURE THROUGHPUT VARIATIONS WITH OTA FOCUS D. Lindler and R. Bohlin Space Telescope Science Institute Instrument Science Report CAL/FOS-085 August 1992 The attached figures show the variation in the throughput for several FOS entrance apertures as a function of the focus error with respect to the HST "optimal focus" position. ... The optimal focus for the 0.25 arcsec wide slit is in the 0 to +10 micron range. ... For the 4.3 arcsec aperture, a large positive focus is optimal. ...

... 2012 August 7 . A Wheel on Mars . Credit: NASA / JPL-Caltech/Mars Science Laboratory . Explanation: A wheel attached to NASA's Curiosity rover is firmly on the martian surface in this early picture from the Mars Science Laboratory mission , captured after a successful landing on August 5, 2012 at 10:32pm (PDT). Seen at the lower right of a Hazard Avoidance Camera fisheye wide-angle image, the rover's left rear wheel is 50 centimeters (about 20 inches) in diameter. ... About APOD | ...

... These experiments followed the movement of the subreflector as the antenna tipped from the zenith to the horizon. We find, relative to a coordinate frame attached to the receiver platform : ffl The axial movement (axial defocussing) is 0.7mm ffl The lateral movement, (in the focal plane, normal to the elevation axis) is 2mm, and no move­ ment parallel to the elevation axis. ffl A rotation of 3 arcminutes about the elevation axis. ... This gave the rotation of the subreflector, shown in figure 3. ...

National Aeronautics and Space Administration . ... Neil A. Armstrong . NASA Astronaut (deceased) . ... Died on August 25, 2012. ... His first assignment was with the NACA Lewis Research Center (now NASA Glenn Research Center) in Cleveland. Over the next 17 years, he was an engineer, test pilot, astronaut and administrator for NACA and its successor agency, NASA. ... Gemini 8 was launched on March 16, 1966, and Armstrong performed the first successful docking of two vehicles in space. ...

... I need to take a closer look at the data. lbn SEFD, gain, and tsys vs za (ps) . ... The rotation angle is scaled to the maximum gain over the entire dataset and lbw gains are multiplied by .95 to match the lbn values. 26jul00 : processing : x101 /lb/ Aug00 /lbnjul00/26jul00.pro , plotting : x101 /lb/ Aug00 /lbnjul00/26jul00plt.pro 02aug00 : processing : x101 /lb/ Aug00 /lbnaug00/02aug00.pro , plotting : x101 /lb/ Aug00 /lbnaug00/02aug00plt.pro 03aug00 : processing : x101 /lb/ ...

Stellarium 0.12.3 . ... Classes . ... ClassљList . ... Refraction Class Reference . ... virtual voidљ . forward ( Vec3d &altAzPos) const . ... backward ( Vec3d &altAzPos) const . Remove refraction from position ("reduce"). ... forward ( Vec3f &altAzPos) const . ... setupGLSLTransform ( StelGLSLShader *shader) . ... virtual void Refraction::backward . ... virtual void Refraction::disableGLSLTransform . ... virtual void Refraction::forward . ... virtual void Refraction::setGLSLUniforms . ...

Next: First Catalog Sources Up: The Second EGRET Catalog Previous: Catalog Construction . ... For each observation with 3, the excess is presented as a flux with its uncertainty. ... For all except the brightest sources or those in confused regions, the statistical uncertainty is larger than any systematic uncertainties. ... The primary catalog is Table 4. ... Other names -- the source name from the first EGRET catalog ([ Fichtel et al. 1994b ]) or other gamma-ray references. ...

... Bus Hound may be the very first product of its kind -- a software bus analyzer for capturing device I/O and protocol. ... When the capture buffer fills to capacity, Bus Hound can be configured to stop the capture process or continue capturing, keeping the most recent acquired data. ... IDE : Bus Hound captures command and data transfers for ATA and ATAPI devices. ... B us Hound captures I/O using a device driver. ... The below figure demonstrates how Bus Hound captures data for SCSI devices. ...

... Fig. ... One of these is a pink-coloured solar prominence, a tongue of incandescent hydrogen gas spewing out of the obstructed solar disc, visible at the 2 o'clock position. ... Such an eclipse was predicted to be visible from deep within the Asian continent on the 1st August 2008. ... A pink-coloured prominence was visible right from the onset (Fig. 1), while several streamers appeared to emanate from the obstructed solar disk throughout the event (Fig. ... Last Revised: 2008 September 8th . ...

... 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. ...

... Regions designation | Regions models | ASCII files description . The real time regions passing . ... The real time visibility of the IB_TAIL relative to the Evpatoria and Panska Ves . The IB_TAIL geocentric distance as a function of the Moscow time (MT = UT + 3h) (Plot) . Geomagnetic local time in the IB_TAIL position as a function of the MT (Plot) . The orbital data ASCII files . ... Updated 22 June, 1999 . ... INTERBALL mission  ...

... In astronomical parlance, an interior planet is at superior conjunction when it is located on the opposite side of the Sun from Earth. ... Water Found in Space Rock . ... HCG 87: A Small Group of Galaxies . ... The Water Vapor Channel . ... It's only Planet Earth, of course ... as seen on the Water Vapor Channel. ... Eclipse Over The Mountain . ... Undaunted by world wide anticipation of the August 11 total solar eclipse, the moon also performed a lunar eclipse just two weeks earlier, on July 28. ...

MRO Delay Line ICD Metrology System to Beam Relay System ICD INT-406-VEN-0013 The Cambridge Delay Line Team rev 0.1 10 August 2007 Cavendish Laboratory JJ Thomson Avenue Cambridge CB3 0HE UK 1 ICD Description Org UoC Owner MF Brief description and preliminary contents Defines space envelope for beam relay pipes above metrology table. One drawing defining beam relay pipe position. ... The full space envelope available for each beam relay pipe is detailed in the diagrams presented in the appendix. ...

XMM-Newton Science Analysis System Page: 1 specadd August 15, 2005 Abstract It creates a multiple X-ray spectrum FITS le either by stacking or putting to- gether two single spectrum les or by stacking a single spectrum on top of an existing multiple spectrum le. ... This type of spectral les is particularly useful when the user wants to simultaneously analyse di erent observations of the same object carried out with the same instrument or with di erent instruments. ...

... It was done. ... Agenda of the RadioAstron teleconference August 25, 2010 Corrections to the Agenda 1 2 3 N. Kardashev N. Kardashev N. Babakin Project status Present status of tests of science payload in LA Brief review of Pushchino TS verifications with Venus Express: current status and outlook Current status and activities related to TS in South Africa and in New Zealand Action items L.Gurvits S.Likhachev S.Gulyaev M.Popov 4 5 Chairman: N.Kardashev List of ...

ATMoB "Double Star Award " Guidelines Purpose: To promote observing among the membership of the Amateur Telescope Makers of Boston ­ in particular, double, triple, and multiple stars. Introduction: Double, triple, and multiple stars are the "Rodney Dangerfields" of the night sky. ... W hile they can be observed under a variety of sky conditions, double stars ­ especially close ones ­ are best viewed on nights when the seeing is steady. ... The direction from a star to Polaris is north. ...

Full-Text Search . ... arXiv.org . 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: Auguste, M. 2 article(s) in total . 16 co-authors, from 1 to 2 common article(s). ... Fernandes, Amadeu. ... Marques, J. G.. ... Ramos, A. Asensio. ... SAI MSU . ...

In this talk I give an introduction to generalizations of the Riemann zeta function called "Weyl group multiple Dirichlet series". Weyl group multiple Dirichlet series are sums in several variables whose coefficients involve Gauss sums and also reflect the combinatorics of a given root system. ... These functions and their residues unify and generalize a number of examples which have been previously treated individually, often with applications to number theory. ...

... Activity 3: Measuring the Position of the Sun in the Sky . Purpose: To give students the opportunity to measure the position of the Sun in the sky using simple tools and methods. ... Alternatively, you may have students devise their own methods of relative measurement and apply them to measuring the position of the Sun in the sky. ... Rangi is the sky, and when the Sun is near Rangi's head it is summer in New Zealand. ... Read the Maori story to students. ... back to Teachers' Newsletter Main Page ...

... The system is not yet perfect. Some improvements for the future are listed in this section. The Compuscope filter wheel can be attached to the Lynxx camera. ... The filter wheel also has three empty positions. Additional filters would be useful. ... A second PC would also allow the filter wheel to be run in a different mode. Presently, the filter wheel is run in a pop-up window mode. ... A beta test version of new data Acquisition software, called The Sky is on order. ...