CUPID catalogues and masks

Catalogues produced by the CUPID application can be displayed in 2D or 3D and it's masks can be displayed or used to view regions.

To display a 2D catalogue just open it as a local catalogue or import it using the Import CUPID catalogue... toolbox in the Image-Analysis positions menu. This latter option allows you to select which columns to use as RA and Dec and whether to use the special Shape column as the plotting symbol (STC-S ellipses and polygons are supported). If you choose not to use the STC-S shapes then boxes based on the extents will be displayed.

Displaying 3D catalogues should be done by importing them using the cube toolbox (View Import CUPID catalogue). When imported this way only regions that are in the current slice will be displayed. Note that if opened as a 2D catalogue all the regions will be displayed. 3D catalogues can also be viewed in a 3D scene as prisms, just select one of the 3D renderers in the View menu in the cube toolbox and click on the CUPID tab and select Display catalogues:. You can restrict the regions displayed to rows selected in the associated catalogue window by selecting Only show selected rows:.

To use a 2D mask open it using the Mask image... toolbox in the Image-Analysis menu. This can then be applied to the displayed image and individual or ranges of regions can be selected for display.

To use a 3D mask look in the CUPID tab in the 3D rendering window and select your mask in the Mask: entry. To just display the mask select Display: and press Draw. To view individual regions or a range enter some values into Values:. To apply these regions to the main cube and select the original flux you need to select Apply mask: and probably select Display: of the mask itself (although you can display both together, in that case you may want to change the opacity).