... HST . ... Director's Discretionary Time Submission . ... Cycle 24 Announcement . ... Changing Programs & Resolving Problems . ... Astronomer's Proposal Tool . ... Up to 10% of the available HST observing time may be reserved for Director's Discretionary (DD) allocation. A DD proposal is appropriate when a truly unexpected transient phenomenon occurs or when developments since the last proposal cycle make a time-critical observation necessary. ... Multi-Cycle Treasury Programs Call for Proposals . ...

... Meta Index / Home Page / Description . ... This can be set by the user via the parameter device . The default value of device is /XS (Xserver), but alternative outputs (depending on what drivers have been installed with PGPLOT) can be used, for example /XW for x-windows, /GIF, /JPEG, /PS for Postscript, and /CPS for Colour Postscript. ... Either a colour-coded image or a contour map image can be produced, depending on the value of imagestyle . ... Note that 0 is not a valid colour map index. ...

... The initial descriptions of the FITS format provided a simplified method for describing the physical coordinate values of the image pixels, but deliberately did not specify any of the detailed conventions required to convey the complexities of actual image projections. ... They were CRPIX n for the reference pixel location on pixel axis n , CRVAL n for the coordinate value at that pixel, CDELT n for the increment at that pixel in the coordinate value, and CTYPE n for the type of coordinate. ...

... Classes . ... Class List . Class Index . Class Hierarchy . Class Members . casa . casa::Modulo< L, R, RES > . ... More... #include < Functors.h > . ... operator() (const L &x, const R &y) const . ... template<typename L , typename R = L, typename RES = L> . RES casa::Modulo < L, R, RES >::operator() . ... The documentation for this struct was generated from the following file: . casa/BasicMath/ Functors.h . ... Generated on Fri Sep 3 2010 13:08:00 for casacore by 1.7.1 ...

... rotang, Date, RA, Dec, Time, accS, ast=ast, ha=ha, lst=lst, jd=jd, az=az, za=za, sep=sep, rotang=rotang, alfabeams=alfabeams . ... It is thus possible to specify, for instance: rotang, ... , ha=haHr, lst=lstHr, ast=astHr . ... alfa_angle - script to launch the GUI . alfa_ang.pro - the GUI: provides input to rotang and a graphical display of the results. rotang.pro - the main routine of the program: finds the required time, the other associated times, Az and ZA using ao_idl routines. ...

... GSAOI Home . ... Science . ... Deep imaging at J , H , and K is required to identify all stellar objects, brown dwarfs, and planetary mass objects in the central region of the Orion Nebula Cluster down to masses comparable to that of Jupiter. This is required to establish the initial mass function, i.e., the number of stars of each mass that have formed, in this region of intense massive star formation. ... The fields of the GSAOI detectors are shown as four green squares in each frame. ...

... SphereParams Struct Reference . ... SphereParams (const float radius) . ... Definition at line 50 of file StelGeometryBuilder.hpp . ... Definition at line 103 of file StelGeometryBuilder.hpp . ... Definition at line 120 of file StelGeometryBuilder.hpp . ... Definition at line 112 of file StelGeometryBuilder.hpp . ... Definition at line 118 of file StelGeometryBuilder.hpp . ... Definition at line 110 of file StelGeometryBuilder.hpp . ... Definition at line 114 of file StelGeometryBuilder.hpp . ...

... 173Wall Peacock We catalogue the brightest extragalactic radio sources at 2.7 GHz. ... These data were originally presented in Wall and Peacock, MNRAS, 216, 173. The values in parenthesis include (units, datatype, example). 1 iauname Name of source in IAU convention (char7, example: '0320-37') . ... 3 ra_1950 rad Right ascension of source in radians (B1950) (real, example: 0.876068) . ... 9 alpha Spectral index of source between 2.7 and 5 GHz (real, example: 0.52) . ... Longair, 1975 . ...

ATMoB "Open Cluster Observing Award " Guidelines Purpose: To promote observing among the membership of the Amateur Telescope Makers of Boston through participation in the Open Clusters Observing Awards program. Introduction: This awards program is oriented towards visually observing open clusters above magnitude 9.9. ... It turns out that a very unprejudiced and convenient method to dermine the limiting magnitude is to count the number of visible stars in certain areas on the sky. ...

... 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. ...

... related tools for FITS header manipulation: . ... While modifying an existing key in a FITS file header is usually done with the standard DFS tool replacekey , adding a missing key requires a different tool: modhead ("modify header"). ... In these cases, certain standard FITS keys required for successful ingestion may be missing, and modhead is the tool to add them. modhead works on FITS files only. ... modhead GIRAF.2027-11-21T20:34:21.626.fits "HIERARCH ESO PRO SCIENCE" "F" . ...

... Description . Catalog . ... In the Catalog, we publish equatorial (ЮБ 2000 , ЮД 2000 ) and galactic (l,b) coordinates of cluster centers derived as the position of overdensity in 2MASS catalog (Koposov et al. ... Distances, color-excesses and ages are the mean-square values calculated using all available evaluations from different color-magnitude diagrams. ... There are individual pages for every cluster where all available plots and parameters are published. ... 2002). ...

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. ...

lsst.coordConv љ unknown . ... coordConv::FK4CoordSys Class Reference . ... FK4CoordSys (double date=1950.0) . ... CoordSys (std::string const &name, double date, DateTypeEnum dateType, bool isMean , bool canConvert ) . ... convertFrom (double &toDir, double &scaleChange, CoordSys const &fromCoordSys, Coord const &fromCoord, double fromDir, Site const &site, double tai=0) const . ... virtual double coordConv::FK4CoordSys::dateFromTAI . ... virtual double coordConv::FK4CoordSys::taiFromDate . ...

... Future seminars . P a s t seminars . Seminar council . ... Detailed theoretical consideration of the main neutrino emission mechanisms in different layers of neutron stars (NSs) are presented. ... Cooling of NSs is simulated using realistic models of nucleon superfluidity. ... that the assumptions of strong proton superfluidity and weak neutron superfluidity in a NS core allow one to interpret two sources, RX J0822-43 and PSR 1055-52, hotter for their ages, as very slowly low-mass cooling NSs. ...

... 2002 June 20 . Bright Galaxy M81 . ... Explanation: Big and beautiful spiral galaxy M81 , in the northern constellation Ursa Major , is one of the brightest galaxies visible in the skies of planet Earth. This superbly detailed view reveals its bright nucleus, grand spiral arms and sweeping cosmic dust lanes with a scale comparable to the Milky Way . ... The errant dust lane may be the lingering result of a close encounter between M81 and its smaller companion galaxy, M82 . ... About APOD | ...

... Technique of supervision of solar atmosphere active formations with the Multichannel Flare Spectrograph. Consider in details now a method of observations of fast processes in solar chromosphere with Multichannel Flare Spectrograph (MFS) installed in Ondrejov Observatory (Czech Republic). ... The working spectral range lies between IR CaII 8542 A and K CaII 3870 A. To observe solar image on the spectrograph's slit a lens, narrow-band H-alpha filter (4) ("Daystar") and CCD-chamber are used. ...

polimodel -- Produce model linear polarization and position angle images . ... Whether to apply random errors to output polarization and position angle values. seed = "" [integer] . ... This task produces a model linear polarization image and corresponding position angle image from an input image assumed to represent intensity (Stokes I parameter). ... A threshold for the input image can be defined such that polarization and position angle are not computed for input values less than this threshold. ...

MRO Delay Line ICD Delay Line to Beam Relay System ICD INT-406-VEN-0008 The Cambridge Delay Line Team rev 0.1 10 August 2007 Cavendish Laboratory JJ Thomson Avenue Cambridge CB3 0HE UK 1 ICD Description Sub-systems Delay line Beam Relay system Org UoC Owner MF Brief description and preliminary contents Defines the mechanical interface between the delay line pipe and the beam relay pipe. ... An interface `stub' of length [TBD] provides a flange to which the beam relay pipe can be fitted see Figure 1. ...

... every new catalog of objects has to be contained in the UNIX directory having the same name as the catalog of objects; . ... the programs for local operations (programs of low level) with the catalog of objects are also in the same directory; . brief characteristics and names of the programs and file with the description of the catalog are stored in the file cats_descr ; . ... All astronomical catalogs have a different format and list different observables. ...