p3d for Windows Publisher's description
from Christer Sandin
p3d is a general data-reduction tool that is intended to be used with data of fiber-fed integral field spectrographs (IFSs).
p3d is a general data-reduction tool that is intended to be used with data of fiber-fed integral field spectrographs (IFSs). This tool can be useful for people who have access to astronomical data of such an instrument. Data-reduction tasks, which are performed by p3d, convert raw data of CCD detectors into extracted spectra that can thereafter be used for scientific purposes.
What's New in This Release:В· Corrected a problem that occasionally would prevent the spectra from being properly traced.
The story is:
В· The first part of the tracing procedure locates peaks in the data. The routine (p3d_tracing_findspec0) tries to find a reasonable value on what is a minimum value in non-peak areas.
В· It could fail if the bias level varies across the image, as it does with the PMAS 4kx4k CCD. Consequently the master-bias image is now subtracted from the continuum image, before the latter one is used to trace the spectra. This solution seems to work.
В· This is a problem that is more likely to occur with a multi-file instrument such as PMAS using the 4kx4k CCD; because, the bias level differs across the files.
The VIMOS extracted-images combination routine; p3d_cvimos_combine:
В· Corrected a serious bug that would prevent the correct use of an input
В· renormalization correction-array file (the keyword CORRFFILE). Also replaced the calculation of a mean telluric-line flux with a median.
В· Thereafter the fluxe...
System Requirements:В· IDL
Program Release Status: Major Update
Program Install Support: Install and Uninstall