Fujiki

It is possible to analyze the flare images in detail with this program because it synthesizes the compact sources with a narrow beam by emphasizing the power of the higher wavenumber components. This program always outputs the partial Sun images.

It applies the CLEAN method to the diffuse sources on the images and is good at analysis of the quiet Sun and filaments. On the other hand, it is not good at flares.

Present version ver. 6.1

Supported computer architecture NEC/SX, NEC/EWS, Sun/Sparc

Supported data 17GHz (non-support for 34GHz), Steady/Event, Partial Sun

Pixel Size 2.45 arcsec/pixel

Field of View 128 pixels fixed.

How to use
(1) unix% fujiki17 < input
(2) unix% norh_synth -p fujiki17 input
(3) IDL> norh_synth,time,prog='fujiki',freq=17

Example of input file

The line numbers are given for convinience. The item with (*) usually do not have to be changed. A template is given in ${NORH}/soft/synthesis/fujiki.

1:	.	; output directory
2:	ss17980419	; raw-data file name
3:	sz00980419001	; 'SZ' file name
4:	1,0,0	; image center offset from Sun center
5:	1	; start frame number
6:	3600	; end frame number
7:	600	; frame interval
8:	1	; *number of integration frames for calibration
9:	1	; *number of integration frames for synthesis
10:	10	; reference frame number
11:	1	; *num. of integ. frames for calibration of reference
12:	1	; *num. of integ. frames for synthesis of reference
13:	10000,10000	; *CLEAN criterion 1 (R+L), (R-L)
14:	10000,10000	; *CLEAN criterion 2 (R+L), (R-L)
15:	0.01	; *CLEAN criterion 3

Explanation for each item

(line 1) output directory

(line 2) raw-data file name
In case of steady-mode data, give only ssFFYYMMDD where FF is frequency (17 or 34), YYMMDD is the date of observation. Do not give full file name like ssFFYYMMDD### where ### is the file number. That is automatically calculated from the given frame. In case of event-mode data, give full file name.

(line 3) 'SZ' file name
'SZ' file name corresponding to the raw-data file.

(line 4) image center offset from Sun center
Give non-zero values if you synthesize an image with the center that has an offset from the Sun center. The first element indicates the unit of shift, arcsec if 1, pixel if 2. If you do not want to get a shifted image, just give '1,0,0'.

(line 5) first frame to synthesize
Give zero in case of non-uniform interval.

(line 6) last frame to synthesize
Give number of frames in case of non-uniform interval.

(line 7) frame interval
Give frame numbers in case of non-uniform interval. If it's too long, give in multiple lines.

(line 8) number of intergration frames for calibration

(line 9) number of intergration frames for synthesis

(line 10) frame number of reference frame

(line 11) number of intergration frames for calibration of reference frame

(line 12) number of intergration frames for synthesis of reference frame

(line 13) CLEAN criterion 1
Continue 1st CLEAN until the maximum of the dirty map will become this value. The unit is brightness temperature (steady solar disk is 10000 K). For 17GHz data, give values for (R+L) and (R-L), the recommended values are 10000 and 10000, respectively. The criterion that is given in the next item (line 15) will be adopted if it is larger than this value.

(line 14) CLEAN criterion 1
Continue 2nd CLEAN until the maximum of the dirty map will become this value. The unit is brightness temperature (steady solar disk is 10000 K). For 17GHz data, give values for (R+L) and (R-L), the recommended values are 10000 and 10000, respectively. The criterion that is given in the next item (line 15) will be adopted if it is larger than this value.

(line 15) CLEAN criterion 2
This given value times the maximum on the dirty map will become the other criterion for CLEAN algorithm. The criterion given in the previous item (line 13) will be adopted if it is larger than this value. The recommended value is 0.01.