... In the median ; function of IDL, the higher of the two values is returned. ... Felix Stoehr, [ST-ECF] xxx = xx(sort(xx)) n = n_elements(xxx) if ((n mod 2) eq 0) then begin return , 0.5 * (max([0,xxx(n/2-1)])+xxx(n/2)) endif else begin return , xxx((n-1)/2) endelse end ;----------------------------------------------------------------------------------------- ; ;***************************************************************************************** function DER_SNR , ...

Viewing contents of file '/net/www/deutsch/idl/idllib/ghrs/pro/ parcheck .pro' ;********************************************************************* ;+ ; ;*name: ; parcheck (general idl library 01) 30-mar-1987 ; ;*class: ; error checking ; ;*category: ; ;*purpose: ; to check that a procedure has been called with the minimum of allowed ; number of parameters . ; ;*calling sequence: ; parcheck , nparm , minparms , callingpro ; ;* parameters : ; ...

RELATIVE SUNSPOT NUMBERS Description of Data from SGD Explanation of Data Reports: Relative Sunspot Numbers -- The relative sunspot number is an index of the activity of the entire visible disk of the Sun. ... The provisional daily Zurich relative sunspot numbers, Rz, were based upon observations made at Zurich and its two branch stations in Arosa and Locarno and communicated by M. Waldmeier of the Swiss Federal Observatory. ... This indicates the uncertainty above and below the predicted number. ...

Startup OYSTER and read the raw data file of scan 45. get_rawdata,'2002-02-15.raw.045' HDS-file opened; mode=READ. Scantable created. ... Finished reading catalogs. ... NPOI uses a special "hybrid" beam combiner, which means it is neither an all-on-one, nor a pairwise combiner, but one which is in between. The one side of the final beamsplitter being used currently contains three beams of combined light, i.e. each beam (in OYSTER called OutputBeam) contains the light from four stations. ...

Next: Media Coverage Up: Widening Access Previous: Web-Site Content and Internet Contents . One measure of the success of the Armagh web-site is the annual number of distinct e-Visitors (DeVs), in fact the number of distinct hosts served by the Observatory's web-site. ... For the Observatory's three principal web-sites ( star , climate and arpc65 ), the detailed breakdown of these figures for 2004 is shown in Table 3 (see http://star.arm.ac.uk/stats.html). ... Data Exported . ... 305,000 . ...

In the Table below the masses of some asteroids which were determined during the last years are listed. ... The listed values were determined from observations of many test bodies by the weighted least square fit for one perturbing mass and corrections to the orbit elements of all used test bodies. ... based on the observations of 98 asteroids (including 50278) with the values of standard error of mass determination less than 3.0 10 -11 M Sun . ... Mass . ... 3) Mass 121 : 0.74 x 10 -11 M Sun ; . ...

The starting page - The catalogues page - The list of the PUL2 fields - The list of the Pul-3(Pul-3SE) fields - The list of the PUL_ERS fields . please read short description of the access form controls . ... Right Ascension (ICRF/Tycho-2) J2000 at the central epoch of obs. (hours, minutes, seconds) (Obligatory parameter) . ... proper motion in RA (*cos(DE)) (ICRF/Tycho-2). (mas/yr) . ... Check the apropriate checkbox to output these data and radiobutton to select stars within interval. ...

... 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. ...

... The Multiple Extension FITS (MEF) file interface is an IRAF library providing facilities for general file operations upon FITS multi-extension files. ... The Multiple Extensions FITS (MEF) interface consists of a number of routines to mainly read a FITS Primary Data Unit or an Extension Unit and manipulate the data at a file level. ... Read the FITS header of a MEF file that matches the EXTNAME or EXTVER keyword values or if not specified, read the extension number `group'. ... The header filename. ...