... These steps must be run on the qpoe file before the dewobble scripts are implemented. ... This is because the phase of the wobble is fixed to the space craft clock. c) Create an ASCII file with the listed obi start and end times. ... The IRAF script 'phase_repos' breaks up each obi of the qpoe file into a number of phase bins. Then a source centroid is calculated for each binned qpoe file. ... Each binned qpoe file is labelled by two indices, the obi and the phase number. ... Run phase_repos: . ...

Databases (NSDC) of the Natural Planetary Satellites. ... NSDC: Database of astrometric observations of Natural Planetary Satellites . ... They are thoroughly looking for observations in different sources, creating their owndatabases which are then mostly inaccessible to other researchers. ... In the file "content" with explications, the reference is given to the data source as well as the bibliographic reference. ... Data sources. ... Why a specific bibliographic database for Natural satellites? ...

Next: Header files Up: Programming in C Previous: Exercises . This Chapter deals with theoretical and practical aspects that need to be considered when writing larger programs. When writing large programs we should divide programs up into modules. These would be separate source files. main() would be in one file, main.c say, the others will contain functions. ... UNIX utilities such as make help us maintain large systems (see later). Header files . ... The Make Utility . ...

. This diagram shows how the precedence rules may be used to achieve the effect of rows being separated by a border. There is no border above or below the table and there are no vertical borders at all. The table shows a table of three columns and three rows. Each cell contains an integer that labels it. The top row is separated from the second by a solid black border. The second row is separated from the third by a solid black border as well. Return to image.

The CHIANTI database consists of 4 primary ASCII files for each ion in the database. contains the energy levels in cm^(-1) It includes both experimental data and theoretical values of the levels energies. ... Comment: 1s2p 3P1 energy has been calculated from the 1s2s 3P0 level using the NIST level separation. %theoretical energy levels: interpolated using He-like ions from C V to S XV. %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % E. Landi 2000 . ...

A Symplectic Integration Scheme that Allows Close Encounters between Massive Bodies J. E. Chambers, Armagh Observatory Mixed­variable symplectic integrators provide a fast, moderately accu­ rate way to study the long­term evolution of a wide variety of N­body sys­ tems (Wisdom & Holman 1991). ... A symplectic integrator works by splitting the Hamiltonian, H , for an N­body system, into two or more parts H = H 0 + H 1 + \Delta \Delta \Delta, where ffl i = H i =H 0 Ь 1 for i = 1; 2 : : :. ...