IDL widget for Data Viewing

Brief description of  Work Scan

Main functions of processing, realized in the program are:

• Displaying of a scan(s) or it (them) fragment(s) in arbitrary combinations and scales;
• Correction of various (not fatal) defects of data;
• Convolution with various smoothing filters;
• Centring scans obtained at a different times and with a different steps between points;
• Calculating of the lower enveloping curve or an average scan from observations data for a few days;
• Simple mathematical operations with scans (addition and multiplication by a constant);
• Calculating of series of parameters for local sources, such as an one-dimensional coordinate, a flux , a size of the source, by using the method of the gauss analysis for the separation of sources to components.
• Any image represented on the screen during processing can be sent to the printer or saved on the disk in a colour WMF (Windows Metafile) format or black-and-white PS (Post Script) format.

Header of FITS file for RATAN solar observations

SIMPLE = T /
BITPIX = 16 /
NAXIS = 0 /
EXTEND = T /
COMMENT This table contains the set (TFIELDS) of 1-dimensional (TFORM#
COMMENT and TDIM#) full disk scans of the Sun at microwaves (TTYPE#)
COMMENT obtained with the RATAN-600 radio telescope. The fan beam
COMMENT observations are made daily in transit mode near the local noon
COMMENT (i.e. at about 9 UT). Both R-handed and L-handed circular
COMMENT polarizations are registered. The time in the DATE_OBS is the
COMMENT calculated UT time of the transit of the solar disk center through
COMMENT the local meridian. A small deviation of antenna beam position
COMMENT from local meridian and also the difference dUT1 are not
COMMENT accurately corrected. About 40 frequency channels in the range from
COMMENT 1.0 GHz to 18 GHz (i.e. at wavelength 30 to 1.6 cm)
COMMENT are used simultaneously. The beam size is frequency dependent.
COMMENT The horizontal HPBW is approx. 225/OBS_FREQ_GHZ ARCSEC.
COMMENT The vertical HPBW is approx. 127/OBS_FREQ_GHZ ARCMIN.
COMMENT If you will have any problems with this FITS-format please write
COMMENT to Solar Group. E-mail sun_a_ratan.sao.ru
HISTORY This FITS file was created by the 'Work Scan' task.
END
 

XTENSION= 'BINTABLE' /
BITPIX = 8 /
NAXIS = 2 /
NAXIS1 = 'long' /
NAXIS2 = 1 /
PCOUNT = 0 /
GCOUNT = 1 /
TFIELDS = 'short' /
EXTNAME = 'SELECTED SOLAR RADIO SCANS' /
EXTVER = 1 /
DATE = 'dd/mm/yy' /
ORIGIN = 'SAO RAS' /
TELESCOP= 'RATAN-600' /
INSTRUME= 'PANORAMIC SPECTRUM ANALYZER' /
DATE_OBS= 'yyyy-mm-ddThh:mm:ss.sss' /
SCI_OBJ = 'SYNOPTIC GROUND BASED DATA FOR SOHO' /
SCI_SPEC= 'MICROWAVE OBSERVATIONS' /
OBJECT = 'SUN' /
AZIMUTH = 'float' /
ALTITUDE= 'float' /
CENTRE_X= 'float' /
XSCALE = 'float' /
ANGLE = 'float' /
SOLAR_R = 'float' /
BUNIT = 'JY/ARCSEC' /
TFORMi = 'integerI' /
TDIMi = '(integerI)' /
TTYPEi = 'FREQUENCY 'float' GHZ xxx' / xxx - 'R+L', 'R-L', 'R', 'L'
TSCALi = 'float' /
TZEROi = 'float' /
END