Spitzer Documentation & Tools
SPICE User's Guide

2.1            Initialize Parameters and Files

PURPOSE

 

In this dialog panel, the user assigns input filenames to: image, mask and uncertainty files. The output directory is also defined. All are required inputs.

 

Based on the selected input image file, SPICE will automatically assign default filenames for the calibration and output files. These may be modified and/or viewed by clicking on the associated EDIT button at the bottom of the panel.

 

 

INPUTS

 

Image File:  Select a FITS image file to be processed through SPICE.

 

Mask File: Select a FITS mask file associated with the image file selected. Note that the mask file must be integer data, not floating point. SPICE will attempt to automatically select this file for you (see note below).

 

Uncertainty File: Select a FITS uncertainty file associated with the image file selected. SPICE will attempt to automatically select this file for you (see note below).

 

Current Output Directory: Select directory for all outputs to be written. SPICE will create the output directory if it does not exist.

 

Calibration Files: Calibration file selections are viewed and/or modified by clicking on the EDIT button. SPICE will display default filenames and will allow the user to modify them. If modified, the "default" label on the main panel will be replaced with "custom".

 

Output Files: Output filenames are viewed and/or modified by clicking on the Edit button. If modified, the panel will indicate user specific selection by replacing the "default" label with "custom".

 

Note: SPICE will attempt to find the corresponding mask and uncertainty files within the input directory based on a 'best match' algorithm plus appropriate suffix based on the image filename. The user may override these selected files. The 'best match' algorithm may find more than one file. SPICE will indicated this in the box next to: "# of Best Match Mask Files" and "# of Best Match Uncertainty Files" The user is responsible for ensuring that the correct files were selected.

 

 

OUTPUTS

 

When an input image is selected, it will be displayed in the FITS window.

 

 

DISCUSSION

 

SPICE will automatically assign default parameter values in the processing flow based on the channel and calibration version information contained in the input image header.