Data Analysis Plugins#

The Mosviz data analysis plugins include operations on both 2D images and Spectrum1D one dimensional datasets. Plugins that are specific to 1D spectra are described in more detail under Specviz:Data Analysis Plugins. All plugins are accessed via the plugin icon in the upper right corner of the Mosviz application.

Metadata Viewer#

This plugin allows viewing of any metadata associated with the selected data.

If the data is loaded from multi-extension FITS that contains a primary header, you will also see a Show primary header toggle, when enabled, would display just the primary header metadata.


This plugin allows exporting the plot in a given viewer to various image formats.

Plot Options#

This plugin gives access to per-viewer and per-layer plotting options.

Subset Tools#

See also

Subset Tools

Imviz documentation describing the concept of subsets in Jdaviz.


See also


Imviz documentation describing the markers plugin.

Gaussian Smooth#

Gaussian smoothing of a spectrum is described under Specviz:Data Analysis Plugins:Gaussian Smoothing.

See also

Gaussian Smooth

Specviz documentation on gaussian smoothing of 1D spectra.

Model Fitting#

The Model Fitting plugin is described in more detail by the Specviz:Data Analysis Plugins:Model Fitting documentation.

See also

Model Fitting

Specviz documentation on fitting spectral models.

Line Lists#

See also

Line Lists

Specviz documentation on line lists.

Redshift Slider#


Using the redshift slider with many active spectral lines causes performance issues. If the shifting of spectral lines lag behind the slider, try plotting less lines. You can deselect lines using, e.g., the “Erase All” button in the line lists UI.

As in Specviz, the Line Lists Plugin includes a slider to adjust the redshift or radial velocity. In Mosviz, this is applied to the current row in the table and is stored (and shown) in a column of the table.

See also

Setting Redshift/RV

Setting Redshift/RV from the Notebook in Mosviz.

Line Analysis#

See also

Line Analysis

Specviz documentation on line analysis.

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. The slit position is calculated using the S_REGION header extension value, located in the meta attribute of the Spectrum1D object that is active in the 2D spectrum viewer.