... The time taken to read through a quadrant on the array sets a fundamental limit on the fastest electron collection rate which can be achieved by resetting all the pixels. An inherent consequence of the methods of operating the NICMOS array detectors in the ACCUM, MULTIACCUM, and RAMP modes is therefore that there is a minimum possible exposure time, ~ 0.6 seconds (0.302 for MULTIACCUM), set by the time required to read the array. ... Figure 15.1 illustrates the operation of bright object mode. ...

T he Siding Spring Survey (SSS) is a Near-Earth Object search program that utilises the 0.5-m Uppsala Schmidt Telescope at Siding Spring Observatory, N.S.W., Australia. ... The mission of the Siding Spring Survey is to contribute to the inventory of near-earth objects (NEOs), or more specifically, the potentially hazardous asteroids (PHAs) and comets (PHOs) that may pose a threat of impact and thus harm to civilization. ... Based on the CSS Mission page . ... Siding Spring Survey Main Page . ...

The best possible protection for personnel is elimination of the hazard. ... Wherever the hazard cannot be eliminated, and there is reasonable risk to hazard exposure, personnel are required to use the proper protective equipment. ... Refer to Section 13 , titled ?Eye and Face Protection?) ... For example, rubber insulation gloves are required to protect against electrical shock wherever work is done on high voltage power equipment. ... Refer to Figure 12.1 , titled ?Use of Protective Equipment?) ...

Next: Radiation Hardness Up: CCD Scientific Performance Previous: Dark current and cooling . The full frame mode of operation is widely used for optical astronomy in order to obtain the greatest focal plane coverage. In X-ray astronomy this mode has a disadvantage in that for the relatively shorter image integrations required to maintain a photon counting mode, smearing of the images occurs during readout when the photons continue to fall on the moving charge pattern. ...

Next: What was the Up: Observational data Previous: Observational data . A certain minimum set of data is required to make observations reducible. These are the identity of the object measured; the identity of the bandpass in which the measurement was made; the time of the observation; and, for integration-type measurements, the duration of the integration. Table describes the basic table-file columns in detail. ... What was measured? ... Mon Jan 22 15:08:15 MET 1996 ...

... Maps of 21cm emission are dominated by warm H i, and most observations of H i absorption against continuum sources are limited to discrete points. ... Current Results At right are maps of H i emission, HISA, and 12 CO emission in the eastern 25% of the survey, given as projections along the velocity (Figure 1) and latitude (Figure 2) axes. ... 2000, A. J., submitted Figure 1: H i Survey Map (`; b): H i 21cm brightness integrated over all velocity channels; white is bright and black is faint. ...

... This paper presents an overview of the CENTERFIT image centering algorithm library currently under development in the IRAF system. ... The centering algorithms employed by these applications must satisfy a wide range of efficiency and accuracy requirements, and function robustly on data sets spanning a broad wavelength, resolution, and signal-to-noise regime. This paper presents an overview of CENTERFIT, a library of 1-D and 2-D centering algorithms currently under development in the IRAF system. ...

The nasa.gov site requires that JavaScripts be enabled in your browser. ... Contact NASA . ... The following are astronauts who are employed at NASA. Astronaut assignments and category definitions (e.g., "active" astronauts, "management" astronauts) are contained in a separate Flight Operations Directorate (FOD) policy letter. Astronaut . ... Acaba, Joseph M. 2004 . ... Aunon, Serena M. 2009 . ... Barratt, Michael R. 2000 . ... Burbank, Daniel C. 1996 . ... Cassada, Josh A. 2013 . ... 1998 . ...

NGC OPTICAL SOFTWARE Claudio Cumani NGC Presentation - 2008, July 16 Differences btw IR and OPT detector controllers: intrinsic 2 "Exposure" handling Optical Rigid scheme for exposures (wipe - integrate - ["move charges on detector while integrating"] - read ). Active intervention of the control-server during the exposure is ti ti th th required (application of new voltages in each state). ... Starting an exposure = starting transfer and storage of data. ...

... Have you ever seen the night sky change? ... IC 1396: Emission Nebula in Cepheus . ... Energized by the bright, bluish central star seen here, this star forming region sprawls across hundreds of light-years -- spanning over three degrees on the sky while nearly 3,000 light-years from planet Earth. The Bubble Nebula . ... South Pole Star Trails . ... Curiosity Before Mars: Seven Minutes of Terror . ... Ash and Lightning Above an Icelandic Volcano . ... Trails in the Morning Sky . ...

In this gallery are many images of Low Surface Brightness Galaxies which have recently been discovered and analyzed. ... The central surface brightness of this galaxy is 24.28 . Malin 2 This galaxy is another huge disk galaxy with a scale length of 15 kpc and a redshift of 15000 km/a. The high surface brightness knot in one of its spiral arms actually has the same color, luminosity and H-alpha equivalent width as the entire Large Magellanic Cloud . ... Truly it is a Low Surface Brightness Galaxy. ...

OptInt PmWiki : Pm Wiki / Access Keys . ... On Windows with Internet Explorer, press ALT + the access key. With Firefox, press SHIFT + ALT + the access key. ... Example: <a href="http://example.com" accesskey="x">Example</a> would create a link to example.com that could be triggered by clicking on the linked word "example" or using the access key Akey+x. That same action key link could be created in PmWiki markup by typing %accesskey="x"%[[http://example.com|Example]]%% , like this: Example . ...

Observing Strategies at Millimetre Wavelengths Tony Wong, ATNF Narrabri Synthesis Workshop 13 May 2003 Current 3mm System · 3 antennas (CA02, CA03, CA04) with dual polarisation receivers. · 2 freq bands: 84.9-87.3 and 88.5-91.3 GHz. ... Shorter baselines also easier to calibrate. ... Desai 1998 22 Observing a test calibrator In poor weather or when using long baselines, it may be unclear whether a non-detection is due to source weakness or to atmospheric phase decorrelation. ...

... 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 . ...

... Apache HTTP Server Version 2.4 . Apache > HTTP Server > Documentation > Version 2.4 > SSL/TLS . ... Client Authentication and Access Control . ... How can I create an SSL server which accepts strong encryption only? How can I create an SSL server which accepts all types of ciphers in general, but requires a strong cipher for access to a particular URL? ... How can I allow only clients who have certificates to access a particular URL, but allow all clients to access the rest of the server? ...

... Corporation . OAO RSC Energia . President of the Corporation . ... Brief History of Rocket and Space Technology . ... Space Station MIR . ... Space Records . ... Image . ... Contribution of RSC Energia to the Russian Space Technology . International Space Station . Project History . ... First Crew . Required Resources . ... Images . ... Second Crew . ... First Russian Visiting Crew . ... Third Crew . ... Fourth Crew . ... Rockets . ... Official WEB-site of S.P.Korolev RSC Energia . ...

README for XFree86 on OS/2 : Hardware and Software Requirements . ... XFree86 does not use the video services of the OS/2 operating system. ... XFree86/OS2-3.3.6 may use a local named-pipe connection or a TCP/IP based network connection. ... There are reports that with EMX 0.9 fix 4, you can also use the new 32 bit IBM TCP/IP 4.1 product. The old IBM TCP/IP 2.0, that comes with the IBM PMX product may be used with Warp as well, although it is no longer supported by IBM. ...

... Space flight . Crew training . ... Space camp . ... acquiring practical habits and skills of performing all the flight operations envisaged for a flight participant; . maintaining and honing professionally required qualities and skills for a successful activity in conditions of effect of adverse factors of a space flight, as well . ... preparing for the activity outside the spacecraft; . ... preparing for professional activity in conditions of effect of the space flight factors; . ...

. 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

... The relation between the metallicity of F stars and their loci on the c 1 , diagram is investigated for a semple 2000 galactic-disk F stars having uvby data. ... По данным uvby -фотометрии, для двух тысяч F-звезд диска Галактики изучена связь между их металличностью и положением на диаграмме c 1 , . ... Если считать, что распределение металличности звезд диска в диапазоне lg Z/Z (или [Fe/H]) от -0.5 до +0.3 непрерывно, то Y 0.02. ...