... Data Reduction FAQ > A number of OmegaCAM filters show vignetting in their central regions. What are the causes for this and what are the dimensions of these features? ... Observing with ESO Telescopes . ... ESO-MIDAS . ... ESO Data . ... ESO HST Image Galleries . ... ESO Data Access Policy . ... ESO Science Newsletter . ... A number of OmegaCAM filters are not monolithic, but consist of four segments (each covering 8 detectors) that have a central cross-shaped support structure. ... Filter . ...

Optical Filters . The WFPC2 camera configuration and filter set require a substantial number of apertures for full utilization of its capabilities. ... An additional set of aperture names have been defined for use with the WFPC2 filters which require partial rotations. ... The pixel coordinates of these apertures will be reviewed on a regular basis to reflect changes in CCD and filter cosmetics. ... The aperture name is generally the same as the (rotated) filter name. ...

... Position Switching Separation Tolerance with Arecibo in L-Band . ... Arecibo Elevation Wheel and Track Life . ... Carl Heiles . ... Dynamics of the Arecibo Radio Telescope . ... The Future: Ultra Wide Band Feeds and Focal Plane Arrays . ... 2002-03 (pdf) . ... 2002 May . ... 2001-09.pdf . ... Multi-Beam Array System Feed Selection . ... 2000-07.pdf . ... The LBW Feed: The Mueller matrix in 1999 and 2000 . ... P. Perillat . ... Feed Resonances in Wide L-Band Gregorian Feed . ... J. Cordes, J. Lazio ....

Program: PLOTSYM Purpose: Plot PGPLOT's marker- and Hershey symbols Category: PLOTTING, UTILITY File: plotsym.c Author: M.G.R. Vogelaar Keywords: GRDEVICE= Plot device: [LIST OF DEVICES] Destination of plot, Screen or Hardcopy. OPTION= 1=Plot markers, 2=Plot Hershey symbols: [1] 1: Plot one page with rows x columns graph markers starting with marker index -1. ... Boxes with undefined Hershey symbols are not displayed, so the symbol numbers are not consecutive. ... PGWIDTH= Give line width 1.. ...

... In the above example, the second region uses the global coordinate system (PHYSICAL by default). ... Supported systems include: name description ---- ----------- PHYSICAL pixel coords of original file using LTM/LTV IMAGE pixel coords of current file FK4, B1950 sky coordinate systems FK5, J2000 sky coordinate systems GALACTIC sky coordinate systems ECLIPTIC sky coordinate systems ICRS currently same as J2000 LINEAR linear wcs as defined in file In addition, two mosaic coordinate ...

... PISTON piston . ... this command is not used by the TCC The guide camera mechanical controller sets the filter, focus and other mechanical functions, but not the position of the guide camera in the focal plane. Positioning, if available, is handled by one or two guider position axes controllers , one per axis of motion. ... Notifies the controller that subsequent commands apply to the guider mechanical controller. ... Sets the piston of the guider to the specified value (in decimal microns). ...

... NFILTCAR is the logical rather than the physical number of carriers; if two or more filter wheels are encoded as a single character in the data, there is effectively only one filter wheel, as far as data handling is concerned. If one filter mechanism carries chromatic filters and another carries ``neutral'' filters, the total number of bands (i.e., rows) in the table should be the product of the number of positions in the two carriers. ...

filter1d - Time domain filtering of 1-D time series filter1d [ infile ] -F < type >< width > [ -D increment ] [ -E ] [ -H [ nrec ] ] [ -I ignore _ val ] [ -L lack _ width ] [ -N n _ cols / t _ col ] [ -Q q _ factor ] [ -S symmetry _ factor ] [ -T start / stop / int ] [ -V ] [ -bi [ s ][ n ] ] [ -bo [ s ] ] filter1d is a general time domain filter for multiple column time series data. The user specifies the number of columns of input and which column is the time. ...

... Returns the number of the first component which has a filter of the specified column or 'axis' name which passes the specified value. This searches only filters on single columns. ... Component numbers start from zero. subroutine getNum1stDssCompWithValue(dssPointer, axisName, axisValue& , firstCompNum) type(DssT), intent(in) :: dssPointer character(*), intent(in) :: axisName real(single), intent(in) :: axisValue integer, intent(out) :: firstCompNum end subroutine getNum1stDssCompWithValue . ...

. Number of Supernovae discovered by amateurs. In this page the amateurs' contribution in supernovae discoveries is shown. The SN 1957B was the first supernova discovered by an amateur astronomer: Giuliano Romano. He discovered it with his own 0.40 mt. telescope at Treviso (Italy), then later he become a professional. This graph is updated to SN 2000ek . Yellow values are SNe discovered by amateurs, red ones the total number of SNe discovered for each year .

A prefs.ccd file should be located in /usr/local/observatory/prefs on the computer to which the camera is attached. ... Parameters that will be read by prefs.ccd are -- ccd.frame_count_multi Sets the maximum number of frames in multi mode Default is 10 Minimum is 2 No maximum ccd. filter _max Sets the number of filters in the filter wheel Should be less than or equal to the number of slots available ccd. filter _01 to ccd. filter _10 Labels for each ...