mrmap: Synoptic Maps algorithm hierarchy
The Synoptic Map software creates synoptic maps based on the Carrington coordinate system in a 360 X 180 pixel grid. All images from the six GONG sites are merged for the Carrington rotation period.
Program directory contentsAfter the magmap_synop.YYYYMMDD.tar.Z file has been uncompressed and untarred, you should end up with a structure shown here:
magmap_synop | |-- All IRAF CL scripts and accompanying par files, plm trim files for the remapping process, time files and a cosine taper filter.
Program hierarchyThere is no main script that calls both subscripts; they are separate steps of the process that are to be run independently. The subscripts do need to be run as sequentially shown.
|--MAGMAP.CL | | | |->CAMOFFSET | | | |->APODIZE | | | |->HGREMAP: requires plm_trim file plm11 | | |--MAGMAP_CARR.CL | | | |--requires the following ASCII files: carr_rotation and cos_taper.fits |
mrmapYYMMDD.fits : Synoptic map FITS file created for a Carrington rotation period with GONG+ magnetograms.
MAGMAP.CL (IRAF): All magnetograms for the Carrington rotation period are apodized and then remapped
into heliographic coordinates. The calibrated magnetogram image headers are also checked for the OFFSET
keyword and added using CAMOFFSET if it is not there.
MAGMAP_CARR.CL (IRAF): All remapped magnetograms are shifted into Carrington coordinates, the polarity is corrected if necessary, the VEL_SCALE value is applied and then a cosine to the fourth power filter is applied. The magnetograms and window functions are then summed respectively. Then the summed magnetogram is divided by the summed window function to create the synoptic map.
Revision: $Id: synopmap_algorithm.html,v 1.3 2004/10/08 22:27:38 khanna Exp $