Display 1: The Solar Grid and Solar Coordinates

The solar grid is a graphical display showing the current orientation of the sun, as well as any active regions and stored Stonyhurst coordinates.

Figure 3: The Solar Grid

Clicking in the solar disk will move the telescope to that position. Entering a set of coordinates (Stonyhurst, radius/position angle or x/y arcsecs) will do the same. It is also possible to adjust the telescope position using the cursor keys (while the solar grid window has the focus). The step size roughly corresponds with that currently set for the handpaddle (on the main window).

At any time, solar disk coordinates may be stored using the toolbar button, the Add/Edit button on the Stonyhurst dialog, or by pressing the right and left mouse buttons simultaneously.

The current set of stored Stonyhurst coordinates is listed in the Stonyhurst dialog, which can be obtained using the button on the top toolbar. Stored coordinates are also displayed on the solar grid as green crosses (active regions are depicted as red circles). Labels may be added using the Comments box on the Stonyhurst dialog. Active regions can be displayed or hidden using the top toolbar button.

Stored Stonyhurst coordinates may be selected on the solar grid with the left mouse button and their position altered by dragging with the left mouse button. The Next and Previous buttons allow you to move through the list, while the Delete button will remove unwanted entries. Interconnecting lines can be drawn using the toolbar button.

At the bottom of the solar grid is an information area displaying the current Stonyhurst position as well as x/y arcsecs and position/radius angle.

It is important to note that the telescope is never perfectly calibrated and, as such, the Schupman crosshair on the finder display will never point exactly to what is seen in the science camera frame.