... New Mandatory Keyword for COS Observations Describing whether Targets are Point Sources or Extended . ... Both COS FUV and NUV observations of targets with FWHM larger than about 0.6 arcsec or radius larger than 0.35 arcsec should be considered as extended. ... If this new target-level description keyword is not provided, APT will trigger a warning message asking the PI to define it, and any proposals submitted without a value specified for all COS targets will be sent back to the PI to be corrected...

Proposal Identification No.: T1937 Date Received: 2004­Feb­02 15:07:54 Technical Page Proposal Type: Regular General Category: Terrestrial Aeronomy Observation Category: Ionosphere Total Time Requested: 48 Hours Proposal Title: Ionospheric disturbances resulting from Atlantic tropical storms and hurricanes ABSTRACT: Recent observations have shown a possible connection between the occurrence of hurricanes and tropical storms and F­region range spreading and velocity variations. ...

Next: Navigation Pre-Observation Products . ... SRT (Space Radio Telescope) Schedule (SRS) File . ... What: GOCG generates the Space Radio Telescope (SRT) schedule file, or SRS file, from current GSTS file. The SRS file has more precise time stamps than long-term schedules, and also designates which GTS will be used when. ... The SRS file also serves as the antenna pointing schedule file, as it describes the planned orientation of the spacecraft (and solar panels) as a function of time. ...

... The Miriad task uvgen can be used to simulate a variety of observing modes. ... Simulating a telescope approximately, let alone in some detail, requires a good many parameters. uvgen takes an appreciable number of parameters and input files to describe the telescope, correlator and source. Fortunately keyword and set-up files for some common situations exist ( e.g. simulating the ATCA and VLA). ... For example, to load typical parameters for the ATCA, use miriad% source $MIRCAT/uvgen.def.atca . ...

... Huchtmeier Richter A catalog of all published HI observations of external galaxies has been compiled. ... the morphological type (internally coded in a crude 1-byte code based on the system of the RC2 Second Reference Catalog of Bright Galaxies (de Vaucouleurs et al, 1976)) in column 4; . the inclination i (in degrees) used by the authors in column 5. ... A General Catalog of HI Observations of External Galaxies by W.K. Huchtmeier O.-G. Richter, H.D. Bohnenstengel and M.Hauschildt May 1983. ...

When entering Identification section user should open the file with observed positions of objects which are to be identified (the file may be first created). ... Format of observations must coincide with that of optic observations in which they are published by Minor Planet Center (observed position may be presented as “accurate” or “approximate” one): . ... observed right ascension (in hours, minutes, and seconds of time (“accurate position”) or in hours and minutes (“approximate position”) . ...

A computer controlled low light photometer for nightglow observations. Hardware units of portable photometer for low light measurements, especially night glow emission is described. ... Interface card contain three channels of 24 bit counter, 4 channels of 12 bit ADC and the buffer bus for the controlled motors of the altazimuthal fork mounting and filters wheel, the position encoders. ... Where N( ) is output signal photometer generated input light flux F( l ) . ... PMT # . 599 . ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Two observations of HD 32633 obtained at close phases, one with NARVAL (Phase 0.689, taken 17 Dec 2006) and one with ESPaDOns (Phase 0.700, taken 26 Jan 2008). ... In this paper we describe and evaluate new spectral line polarisation observations obtained with the goal of mapping the surfaces of magnetic Ap stars in great detail. ...

Next: DISH : The Single Dish Environment in AIPS++ . ... We present the SDImager tool which is designed to be the single dish imaging component of DISH in AIPS++. ... Recent work has concentrated on developing an imaging tool for single dish on-the-fly (OTF) observations using the same imaging class library as used for synthesis imaging in AIPS++. ... The initial single dish imaging tool in AIPS++ provides a few tools to examine and image these types of observations. ...

... Science Users Information > Observing Facilities > La Silla Facilities > La Silla Science Operations . ... La Silla News . ... Internal Pages . La Silla Science Operations Department (LSO) is part of the La Silla Paranal Observatory and is in charge of the operations of the telescopes on La Silla. ... In the La Silla Science Operation pages, you should find all the information you need for your observations from the time you have an idea of observations until when you finish processing your data. ...

... The experience of determination of the link between radio sources and dynamical reference frames is presented. To obtain this connection we used a series of very long baseline interferometry (VLBI) observations of the spacecraft Phobos-2 and angularly nearby quasars. ... The dynamical reference frame is determined by equator and equinox of these ephemerides. ... References . ... The relative orientation of the radio and dynamical reference frames can be described by a sequence of three rotations . ...

... A radio galaxy is a galaxy that emits an unusually big amount of energy at radio wavelengths. ... Inside of each galaxy with an active nucleus (radio galaxies are among them) there must be a system of a "central machine" responsible for the colossal amount of the emitted energy from radio to gamma ranges. ... Sometimes a radio source in an active galaxy may flare again if the needed conditions appear (a new portion of matter would fall into the furnace of the "central machine"). ...

Next: Data analysis and Spatial Up: Spatial Corrections of ROSAT Previous: Spatial Corrections of ROSAT . ... We start with an observation for which the PRF is much worse than it should be; caused by residual wobble errors or other causes. ... Spatial analysis of ROSAT HRI observations are often plagued by poor aspect solutions, precluding the attainment of the potential resolution of about 5''. ... A recent example showed one obi for which the source was 10 north of its position in the other 17 obis. ...

... The Reconstructed Time Correlation data provided in an ODF covers the entire revolution in which the observation was performed. If the TCX file is finally used through selection process described above the environment variable SAS_TIMECORR_TCX controls whether the entire dataset is used, or just the data corresponding the observation period. ... Use just the observation period for constructing the data fit . ... This variable is ignored for TCS data, which covers just the observation period. ...

... APT Activities and Science Results 3. ... APT Secretary Philip Edwards (ISAS) reviewed the aims of the APT (http://www.vsop.isas.ac.jp/apt/DefinitionAndAims.html). ... The Australia Telescope Compact Array, and Ceduna, Hartebeesthoek, Kashima, Mopra, Parkes, and Shanghai telescopes of the Asia-Pacific Telescope participated in these observations. ... In the absence of Tetsuo Sasao, Philip Edwards briefly described results of the APT 22 GHz observations conducted from October 1st to 5th, 1997. ...

... Main page . ... Back to SAO web page . Last update: 21 Nov 2015 . ... The SCORPIO-2 project: . Spectral Camera with Optical Reducer for Photometric and Interferometric Observations - 2 . The polarimetric observations with SCORPIO-2 are described in details in the paper: . Afanasiev V. L., Amirkhanyan V. R., "Technique of polarimetric observations of faint objects at the 6-m BTA telescope", 2012 Astrophysical Bulletin, e 67, 438 ( English PDF , Russian PDF , link in ADS ) ...

... The Science Operation Department is composed of Astronomers, Telescope Instruments Operators(TIOs) and Data Handling Administrators(DHAs). ... Astronomers have proposed several methods to quantitatively measure the amount of turbulence above the telescope, which the most common ones is Differential Image Motion Monitor (DIMM). In optical testing, the Hartmann test is the common method to test the quality of optical components. ... Hartmann mask consists of 48 lenses. ...

... Exposure Time Calculator (ETC) . ... ESO - Public Surveys . ... the recommended values to use for DIT, . ... Detector on-chip integration (DIT): seconds. to your chosen value - a separate page gives recommended values to use for DIT - for modes 1 and 2 below you may wish to start with the maximum recommended values as these will minimize the effect of read noise (a total object exposure of Y secs with DIT=X secs will produce Y/X lots of read noise) and give you a lower limit on the time needed. ...

Winer Observatory P.O. Box 797, Sonoita, Arizona 85637-0797, USA . ... Asteroid . ... Site . ... The evening of October 26, 2011, Mark Trueblood, Robert Crawford, and Larry Lebofsky used the Kitt Peak 2.1-m telescope to observe Near Earth Asteroid (NEA) 2008 QT3. ... single still jpeg frame . ... The National Optical Astronomy Observatory (NOAO) issued a press release concerning Morgan's work on Monday, November 21, 2011 and posted it on the home page of their web site . ... 2013 Winer Observatory. ...

... The J, H and K bands are characterized by a bright background, such a background is mainly due to the emission of atmospheric lines and of thermal radiation. ... If the source cover a large fraction of the slit, spectra off-source must be observed to adequately sample the sky background. ... The on chip integration time (time spent in each position of the slit) must not exceed 40 seconds in J and H bands and 60 seconds in K band. ... We suggest a sequence of 10 for each elementary integration time. ...