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#### A.10.1.20 Display Cutout Image

Configuration for Display Cutout Image action

This option presents an easy-to-use way of popping up a cutout image from an image server displaying a region of sky around an activated row. The size of cutout can be selected, and a small selection of image services is provided. When you activate the row, the program will attempt to contact the web server which provides these images, retrieve the image, and display it in one of the internal image viewers.

Note: the list of image services provided by this action is very limited. In most cases, you will be better off using the Display HiPS cutout action.

Configuration:

RA Column
Dec Column
  Identifies the table columns representing sky coordinates for the central cutout position.
Cutout Service
  Select which of the provided cutout services will provide the displayed image. The list is currently:
  - SuperCOSMOS All-Sky Blue
  - SuperCOSMOS All-Sky Red
  - 2MASS Quick-Look J-band
  - 2MASS Quick-Look H-band
  - 2MASS Quick-Look K-band
  - SDSS Colour Images (note does not provide all-sky coverage)
Dimension in pixels
  Gives the number of pixels (width and height) of cutout images. The text to the right of the selector indicates the size of a pixel for currently selected service.

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TOPCAT - Tool for OPerations on Catalogues And Tables
Starlink User Note253
TOPCAT web page: http://www.starlink.ac.uk/topcat/
Author email: m.b.taylor@bristol.ac.uk
Mailing list: topcat-user@jiscmail.ac.uk