This page (revision-12) was last changed on 27-Nov-2017 16:52 by Peter Young

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At line 1 added 2 lines
[{ALLOW edit EISMainUsers}]
[{ALLOW view Anonymous}]
At line 6 changed 2 lines
IDL> eis_wave_corr, l1name, offset
IDL> eis_auto_fit, wd, fit, offset=offset
IDL> eis_auto_fit, wd, fit
At line 10 removed 2 lines
The first command is used to determine the wavelength offset at each spatial pixel due to the tilt of the EIS slit and orbit variation of emission line centroids. Correcting for these effects yields a much more accurate velocity map.
At line 15 changed 3 lines
int=eis_get_fitdata(fit,/int)
vel=eis_get_fitdata(fit,/vel)
wid=eis_get_fitdata(fit,/wid)
int=eis_get_fitdata(fit,/int,calib=calib)
vel=eis_get_fitdata(fit,/vel,calib=calib)
wid=eis_get_fitdata(fit,/wid,calib=calib)
At line 20 changed one line
Error arrays for each parameter can be obtained by adding the optional output 'error=error':
The optional input 'calib' specifies which radiometric calibration to apply to the data. Please check the [calibration discussion page|EISCalibration] for more details. The recommended options are 1 or 3 for the Del Zanna (2013) or Warren et al. (2014) calibrations. Neglecting to specify calib means that the original laboratory calibration (as performed in the call to eis_prep) will be retained. Although 'calib' does not need to be specified for the velocity and line width arrays, it's good practice to always specify it.
At line 21 added 2 lines
Error arrays for each parameter can be obtained by adding the optional output 'error=error'. Make sure that 'calib' takes the same value as it did when you extracted the intensity array.
At line 23 changed one line
int=eis_get_fitdata(fit,/int,error=int_error)
int=eis_get_fitdata(fit,/int,error=int_error,calib=calib)
At line 26 changed one line
This example shows the most simple use for eis_auto_fit. The routine can also be used to perform multiple Gaussian fits and a full description of the capabilities are given in two documents: '[Gaussian fitting for the Hinode/EIS mission|https://hyperion.nascom.nasa.gov/svn/eis/release/doc/fitting/eis_auto_fit.pdf]' and '[Gaussian fitting examples using eis_auto_fit|https://hyperion.nascom.nasa.gov/svn/eis/release/doc/fitting/eis_auto_fit_examples.pdf]'.
This example shows the most simple use for eis_auto_fit. The routine can also be used to perform multiple Gaussian fits and a full description of the capabilities are given in two documents: '[Gaussian fitting for the Hinode/EIS mission|ftp://sohoftp.nascom.nasa.gov/solarsoft/hinode/eis/doc/eis_notes/16_AUTO_FIT/eis_swnote_16.pdf]' and '[Gaussian fitting examples using eis_auto_fit|https://ftp://sohoftp.nascom.nasa.gov/solarsoft/hinode/eis/doc/eis_notes/17_AUTO_FIT_EXAMPLES/eis_swnote_17.pdf]'.
At line 31 changed one line
# The Gaussian line widths include a significant instrumental component of approximately 55 mA.
# When the line width array is extracted with eis_get_fitdata, it is automatically corrected for the instrumental line width. To keep the instrumental component, use the /keep_inst_width keyword. The thermal component of the line width can be removed by using the thermal_wid= optional input - see the routine header for details on how to use this keyword.
This page (revision-12) was last changed on 27-Nov-2017 16:52 by Peter YoungTop