NRH FILE NAME
The standard
name for NRH files is
nrh2_FFFF_XNI_YYYYMMDD_HHMMSS.CC_T.fts
FFFF frequency , unit 100kHz
X File
type: h
image file
s source
tracking result
p
pixel coordonates
f flux
result
N Number of pixels = 2^N
I free for user purpose
YYYYMMDD Date
HHMMSS.CC Time
T Type
q
time resolution 128s
i time
resolution 10s or 32s
c
compressed file, full resolution (available on request to the NRH team)
NRH FILES FORMAT
Image files
Image
file format uses binary table extension
EXTENSION
0
HEADER0: General information
No data
EXTENSION
1
HEADER1: Observation and binary table description
DATA
in binary table
1st column time in milliseconds (TIME)
2nd
image number
3th
image for Stokes parameter I (STOKESI)
4th
optionally image for STOKES parameter V (STOKESV)
Source tracking
files
EXTENSION 0
HEADER 0: General information
No data
Same
number of extension than sources found by 'Source Tracking'
EXTENSION
N
1st column time in ms (TIME)
2nd
Intensity of the maximum of the centroid (INTENSITY)
3th
East-West position in pixels (EWPOS)
4th
North-South position in pixels (NSPOS)
5th
Size of the major axis of the ellipse resulting from the fit to the image
(MAJAXIS)
6th
Size of the minor axis of the ellipse (MINAXIS)
7th
Angle of the ellipse with respect to the east-west direction (ANGLE)
8th
Flux (FLUX)
The
dimension for MAJAXIS or MINAXIS is 1/Npixels^2. The dimension in solar
radius is
Dim = IND_RS( 1/SQRT(majaxis value), 0, value of SOLAR_R keyword)
Pixel coordonate
files
These files are ASCII files
Flux files
EXTENSION
0
HEADER 0: General information
No data
Same
number of extension than flux computation made on the same images file
EXTENSION
N
1st column time (TIME)
2nd
Flux (FLUX)