This page (revision-27) was last changed on 26-Oct-2022 21:57 by Peter Young

This page was created on 07-Jun-2010 19:35 by PeterYoung

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EISmethods
EISmethods

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At line 65 added 39 lines
!!Extracting a warm pixel map for a data window
eis_prep flags warm pixels on the detector during the processing by comparing with warm pixel maps stored in the Solarsoft distribution. Suppose you want to see what the warm pixel map looks like for the 195.12 data window that you're analyzing.
The first step is generate the calibration object:
IDL> cal=data->getcal()
The warm pixel map is then obtained with
IDL> iwin=data->getwindx(195.12)\\
IDL> wp=cal->warm_pixels(data,iwin)
The hot pixel map can be obtained by substituting 'warm_pixels' with 'hot_pixels'.
!!Moments, Gaussian fitting and maps
!Generating moments for a data window
Moments are usually used as a quick means of estimating the intensity, velocity and width of an emission line without having to do Gaussian fits. They are obtained by doing:
IDL> m=obj_new(‘eis_moment’,data,iwin=195.12)
A widget will pop up allowing you to define the emission line and continuum to be used for the moments.
A list of methods for 'm' can be obtained by doing:
IDL> m->help
!Gaussian fits for a data window
These are done in the same way as the moments by adding the keyword /gauss:
IDL> m=obj_new(‘eis_moment’,data,iwin=195.12,/gauss)
You will again be asked to define the line and continuum for the fit.
!Viewing moments and fits through maps
This page (revision-27) was last changed on 26-Oct-2022 21:57 by Peter YoungTop