Position Editor

The Position Editor (PE) provides a graphical view of the observation and can interactively modify elements of it. The position editor is launched by clicking the Image button on the main toolbar or selecting “Show the Position Editor” from the View menu. It has four constituent parts, identified in the image below:

• Main Menu – open, save and print images; manipulate images and overlays; navigate through previously-viewed images; open on-line image, target catalog and archive servers (including name resolution); open personal catalogs.
• Main Toolbar – open stored images; navigate through previously-viewed images, change the display stretch, access the catalog viewer, and search for guide stars and download images.
• Left Sidebar – display or move the base position or instrument angle; display, add, move or delete Guide Stars or offset positions; display the WFS and science instrument  fields of view and mosaic patterns; display guide star and on-line catalog sources. Note that the left sidebar will change depending on the instrument used in the observation.
• Position Editor Viewer – display an (optional) image of the field around the science target and overlay instrument, GS and catalog information. Any FITS image that contains a suitable world coordinate system may be used as the background image. The viewer image (with or without overlays) can be printed or saved to disk (from the file and catalog items on the menu bar).