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Acces
The NRH software is part
of Solar
Soft (NRH tree). Requirements IDL 5.2 or greater and
Solar Soft, Radio Observatories: NRH
The sofware is run by the
NRH command in the SSWIDL environnement.
The data base visibilities
files ,first, have to be converted in FITS images ("Visibilities To Images"
widget). NRH software use various FITS formats files see NRH
Format Files for information
NRH
tools
The two following routines
apply only to NRH data
The NRH widget procedure
gives acces to
Computation of FITS image files from NRH visibilities binary files
Image analysis (Tv, Contours, Profile, Pixel coordinates, ...)
Display many images in the same window
Movie made from images in the FITS file
Source Tracking (spatial and temporal evolution of different emitting components)
Superposition of data from various instruments (the center of the sun and
the solar radius must be given in pixel units, either in the FITS header,
by manual entry or provided the field of view comprises the whole sun,
by computation from three points on the limb) and results of Sources tracking
or pixels coordinates
Projection of images on a choosen direction and their time evolution
These procedures can be
applied to data of various types and instruments (GIF files, SOHO, YOHKOH,
HESSI).
Flux computation and plots
NRH data time integration
The SSWIDL command
READ_NRH, File name, Index, Data
Converts
VISIBILITY files or NRH FITS files (result of Visibility to image conversion
of the NRH software) to maps for the MAPPING
SOFTWARE (D Zarro) or read images
from NRH files (result of NRH conversion)
It
is possible to get one image at a chosen time or an array of images.
The SSWIDL command
READ_MAP_GIF, File name, Index, Data
Gets an image from a GIF file and prepares it to use with the Mapping software.
contact:Anne Bouteille
