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3.6. int_map

Function: 2D reconstruction from a ASCII file with fiber number, x, y, parameter to be mapped, and fibre status columns Syntax: int_map inputfile interp bundle invert outimage Parameters:

Description: With this task we can obtain the reconstruction of an image from the values of the different optical fiber array of a bundle.

The inputfile is a input file, which contains five columns: nf x y parameter status, where nf is the number of the fibre, x and y are the x-coordinate and the y-coordinate of the fibre at the focal plane of the telescope, parameter to interpolate corresponding to the nf fibre and status defines if the fibre is broken (0) or non-broken (1).

The interpolation may be linear (interp=1) or logarithmic (interp=0). For each bundle there is a grid. For the SB1 bundle the reconstructed image (outimage) have 135 by 118 pixels with 0.05 arcsec per pixel. For the SB2 bundle the outimage have 153 by 111 pixels with 0.1 arcsec per pixel. And for the SB3 bundle the outimage have 97 by 185 pixels with 0.3 arcsec per pixel. If the order of the fibers along the slit of the spectrograph is changed respect to the input values of the fibers, you can put invert = yes in order to change the entry values for the interpolation of each one of the fiber by its complementary one fiber number + complementary fiber number = fiber total number). If you have conveniently extracted the apertures, invert = yes in the case of the bundles SB1 and SB3 (parameter order=decreasing), and invert = no in the case of SB2 (parameter order=increasing).


next up previous
Next: 3.7. int_rec Up: 3. Quick data examination Previous: 3.5. readfxcor
Carlos del Burgo
1998-04-03