... select cursor and ellipse . ... The three mouse buttons have been redefined as: . ... i.e. , the axial ratio and orientation of the ellipse are fixed, only adding (or removing) ellipses of different area is possible. obtain different annuli by placing the mouse at some distance from the ellipse and clicking on the MIDDLE button to produce equally spaced, concentric ellipses towards the mouse position. ... Note: &! means ``and not''; i.e., an elliptical annulus rather than a solid ellipse. ...

... The first of the equations defines the position of the spectral orders, m , in the raw image, while the second equation gives, for each order, the dispersion relation in one dimension. ... where the coefficients are computed using least squares techniques on a grid , i.e. sample number and line number of points located within the spectral orders of the image. These points in the grid are found automatically by an order--following algorithm, normally using the FLAT or STD image. ...

. " The Arecibo Observatory is sponsored by the National Science Foundation. Any opinions, findings and conclusions or recommendations . expressed in this publication are those of the author(s) and do not necessarily reflect the views of the National Science Foundation."

... Near Infrared Camera and Multi-Object Spectrometer Instrument Handbook for Cycle 17 > Chapter 6: NICMOS Apertures and Orientation > 6.1 NICMOS Aperture Definitions . ... Each HST Science Instrument requires its own local coordinate system and apertures to support both target acquisition and small angle maneuvers (SAMs). ... Each NICMOS camera has two primary apertures. One is positioned at the geometric center of the detector and the other at an optimal position close to the center. ...

Astronomy Picture of the Day . ... 1.01.2001 . ... During millennium two , humanity continually redefined its concept of "Universe": first as spheres centered on the Earth , in mid-millennium as the Solar System , a few centuries ago as the Galaxy , and within the last century as the matter emanating from the Big Bang . ... 2001 2002 . ... NASA Web Site Statements, Warnings, and Disclaimers . ... Publications with keywords: universe - millennium . Publications with words: universe - millennium . ...

... Bojan Nikolic web pages (r. 329) . ... The order in which libraries to link to are passed to the linker is important . ... Many libraries use the GNU Autoconf/Automake build toolchain. ... Run the ./configure script, which looks for the various programs and libraries that the package needs . ... The simplest way is to run ./configure and make note of any complaints about missing programs or libraries that it reports. ... Some notes on the GNU toolchain . ... Passing options to configure . ...

Next: Time coordinate system (TIMCOORD) Up: Coordinate Definitions used by Previous: Coordinate Definitions used by Contents . The CAL makes use of the following spatial coordinate systems . PIXCOORD0: Telemetry-related CCD pixel coordinate system . ... PIXCOORD1: Node-oriented CCD pixel coordinate system . ... The pixel coordinate system is, thus, node-oriented . ... CAMCOORD1/CAMCOORD2: Camera reference systems . ... Camera unit(s) . alignment of CAMCOORD1/2 axes in PIXCOORD1 frame . ...

Program: TRACE Purpose: TRACE plots image values at user given positions as function of distance to a plot centre (in 2-d (sub)sets). Category: ANALYSIS, PLOTTING File: trace.c Author: M.G.R. Vogelaar Keywords: INSET= Give set (, subset): Only one subset is allowed. ... XYBOX= Give size of box around one pixel: [3,3] The resulting value at a selected position is an average of the pixels in the defined box around that position. ... POSITION= Give position x, y: Physical values are allowed. ...

... This document and the attached postscript figure document an analysis that I did to determine the optimum midpoint and required ranges for both the rotator and azimuth for the 2.5 M telescope. ... I simulate a series of drift scans on the sky for tracks that cover the northern survey area. These tracks cover the range in survey l