Data Analysis Plugins

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Gaussian Smooth

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Model Fitting

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Unit Conversion

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Line Lists

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Line Analysis

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Slit Overlay

A slit can be added to the image viewer by opening the Slit Overlay plugin and clicking the Apply button. The Remove button can be used to remove a slit once it has been applied to the image viewer.

In order to plot a slit onto the image viewer, we need WCS information from an image and slit position from a 2D spectrum. WCS information is taken from the meta attribute of the CCDData object representing the data in the image viewer. The slit position is calculated using the S_REGION header extension value, located in the meta attribute of the SpectralCube object that is active in the 2D spectrum viewer.