TripleSpec Guider Settings

 

 

 

This dialog box is called by pressing the "Settings" button on the Guider area (bottom right corner) of the Guider GUI.

 

 

Settings definitions

 

Guiding Threshold:

            Sets the threshold required for the guider to assume there is enough signal to guide. If 5 % of the pixels inside the box area have at least a _threshold_ % value of the peak, then the correction will be sent.  Otherwise it will be rejected and an error message will appear on the messages area of the main window ("-34 NO SIGNAL"). Also the "last" LED will be turned off.

 

Seeing Tolerance:

            Any correction with a value < Seeing_Tolerance will NOT be sent, assuming they are variation due to seeing and not real corrections.

 

Gain:

            This is the "attenuation factor" applied to the calculated correction.  This number must be adjusted to avoid overshoot or oscillation on the telescope.

 

Max Correction rate:

            Sets the maximum rate for the corrections, in seconds.  Any correction calculated before _max_ seconds will not be sent.

 

Telescope Move Rate:

            Sets the speed at which the telescope will move when a correction is sent (in arcsecs/sec).

 

Algorithm:

            Defines  which algorithm will be used for the guiding process: CMASS (Center of Mass) or QUAD (four quadrant weighting). CMASS is the algorithm used by default.

Xcenter/Ycenter:

            Sets a specific position (pixel-precision) for the center of the guide box.  When the box is moved with the mouse this value gets updated and vice/versa.

 

Xoff/Yoff:

            Sends an offset for the guide box.  The offset can be specified in pixels or in arcsecs.  If arcsecs are used, Xoff and Yoff become RA and DEC.

 

Xsize:

            Sets the size of the guidebox at pixel-precision. This can be specified in arcsecs or pixels.