| Command |
Description |
| F1 |
(As used with GLK) is used to toggle a pause in guiding. |
| F2 |
(As used with GLK)exits guiding.
|
| F3 |
(As used with GLK)will toggle a display of guiding statistics, and F4 will sky chop. While guiding, the telescope coordinate lock is turned off (the message on the screen is given as ``Off -- Guiding'') since guiding is now actively done by locking to the guide star. In pause mode, the program automatically resumes the coordinate lock mode which was enabled when guiding was started. In track lock mode, both the telescope and the stage will continue to move (or the box if video guiding). Thus, the star should remain in the (invisible) box and, when guiding is resumed should still be centered in the box. However, just to be certain, the user is asked to use the paddle to move the star back into the box when guiding is resumed. |
| F4 |
(As used with GLK)If F4 is selected (sky chop), the program requests the position angle and offset to the desired sky position. Guiding is stopped and the telescope is moved to the requestion position. Once at that location, the telescope position may be further adjusted with the paddle. Once the sky measurement is completed, hitting the carriage return will cause the telescope to move back to its initial position and guiding will resume. td>
|
| F6 |
Increase delta-focus value by one step. This value starts at 1.0 mm and can be changed to 0.1, 0.3, 0.5, 1.0, 3.0, 5.0, or 10.0 mm. When the value is changed, the new value is flashed in the lower right of the screen.
|
| SHIFT-F6 |
Decrease delta-focus value by one step. This value starts at 1.0 mm and can be changed to 0.1, 0.3, 0.5, 1.0, 3.0, 5.0, or 10.0 mm. When the value is changed, the new value is flashed in the lower right of the screen.
|
| CRTL-F6 |
Flash the current value of delta-focus in the lower right of the screen.
|
| F7 |
Move focus of guider one delta-focus unit in the positive direction (see F6).
|
| SHIFT-F7 |
Move focus of guider one delta-focus unit in the negative direction (see F6).
|
| F8 |
Toggle mode from slow scan to TV and back. |
| F9 |
Increase delta-black value by one step. This value starts at 10 and can be changed to 1, 2, 5, 10, 20, 50, or 100. When the value is changed, the new value is flashed in the lower right of the screen.
|
| SHIFT-F9 |
Decrease delta-black value by one step. This value starts at 10 and can be changed to 1, 2, 5, 10, 20, 50, or 100. When the value is changed, the new value is flashed in the lower right of the screen.
|
| CRTL-F9 |
Flash the current value of delta-black in the lower right of the screen.
|
| F10 |
Increase black DAC value by the current value of delta-black (see F9). |
| Shift-F10 |
Decrease black DAC value by the current value of delta-black (see F9). |
| F11 |
Increase integration by sqrt(2) sec.
|
| SHIFT-F11 |
Decrease integration by sqrt(2) sec.
|
| F12 |
Increase gain by one step.
|
| SHIFT-F12 |
Decrease gain by one step. |
| GAB |
Guider Auto Black. Adjust the ScanCo DAC value such that the derived black value is the current GAS value. This command takes up to eight integration time cycles to complete and can be interrupted by ESC. |
| GAF |
Guider Alternate Focus. Only available at the Perkins. Toggle the position of the alternate mirror port from active (telescope beam comes out the side port) to stowed (telescope beam comes through normally). It takes about 15-20 seconds to move the mirror from one position to another. If MOVE is run in video mode (V) or no guider mode (N), MOVE checks if the guider interface is connected (in guider mode (G), the interface must, of course, be connected). If it finds it, then this command can be executed. If the guider is turned off or is not connected to the PC, then the display screen will show that the alternate mirror is ``unavailable'' and GAF will generate an error message. If the guider is connected, the display screen will show the current state of the mirror (``active'' or ``stow''). |
| GBL |
Guider BLack level. Set ScanCo camera DAC to an explicit value. |
| GBX |
Guider BoX. Put a guide box on the screen. The box may be moved left, right, or diagonally by one step by the keypad keys (except 5). Use - to decrease the step size and + to increase the step size. Use G to make the box size grow S to make it shrink, R to restore it to its default size. The step size, box size, box location, and central pixel value are displayed both on the image and on the screen. F1 gives help, If the GBX was called indirectly by a guiding request (either via a GLK command or from GGS), F2 will exit GBX and begin guiding; if the GBX was called directly from command mode (via the GBX command), F2 will return to command mode. F4 may be used to automatically find the star and move the box to it. If there is a valid GOS, F5 can also be used to find the star and then move the stage to put the box on the star (the position of the box will stay the same). Finally, typing HOME will enter the GXY command so that the star can be moved in the CCD frame using the numeric keypad keys. |
| GCO |
Guider move stage by COordinate. Move the guider head to a specific RA/DEC. This command will not be accepted if there are no orientation and scale parameters currently defined. |
| GDB |
Guider DeBug. Allows moving the stages as in the GXY command, but without mapping to the sky. That is, the motions are cardinal in the guider XY stage. The guide box is displayed during the GDB. |
| GDO |
Guider Dither Offset. Exclude from guide star selection, a region around the edge of the guider. This provides a dither margin for OSIRIS. |
| GEG |
Guider Extended GOS. Does a more accurate GOS but requires that a GOS be done first. The routine places a star at each of the four corners and the center of the guider CCD in order to determine an improved scale and orientation of the chip X/Y coordinate vs N/E on the sky. It then moves the same star to each corner of the guider field in order to determine an improved scale and orientation of the guider X/Y stage vs N/E on the sky. The procedure may be interrupted at any time by typing ESC. |
| GFO |
Guider FOcus. Focus the guider using the keypad. Use the 8 key to move the CCD away from the pickoff mirror by one step; use the 2 key to move the CCD towards the pickoff mirror by one step; use the keypad + key to increase the step size and the - key to decrease the step size (step size runs from 0.1 mm to 10.0 mm and is shown on the screen). F1 gives help. F2 to exit when done. The range on the focus is about +/-50 mm at the 72" and +/-40 mm at the 42". |
| GFW |
Guider Filter Wheel. GFW allows selection of a filter (1 thru 10) from the automatic filter wheel. If MOVE is run in video mode (V) or no guider mode mode (N) , MOVE checks for the existence of the guider interface (in guider mode (G), the interface must, of course, be connected). If it finds it, then this command can be executed. If the guider is turned off or is not connected to the PC, then the display screen will show that the filter wheel is ``unavailable'' and GFW will generate an error message. If the guider is connected, the display screen will show the current position of the filter wheel. A filter designation of zero may be used to re-initialize the filter wheel. |
| GGA |
Guider GAin. Set camera gain. Only values allowed are 1, 2, 5, or 30. |
| GGG |
GuiderGrabberGain. Set gain of frame grabber. A value from 0.67 to 1.33 may be entered. The value on startup is 1.09. The current value is displayed in the guider screen. In most cases, this command will not be used by the average user. |
| GGI |
Guider move current Guider location to the Instrument. Move the telescope such that the RA/DEC of the guider box becomes the RA/DEC of the instrument (ie the telescope). As a result, an object in the guide box is moved to the instrument. |
| GGO |
GuiderGrabberOffset. Set offset of frame grabber. A value of -854 to +266 (milli-volts) may be entered. The value on startup is 50 mv. The current value is displayed in the guider screen. In most cases, this command will not be used by the average user. |
| GGS |
Guider find Guide Stars. Select guide stars. The on-line catalog is searched for stars in the guider field of view. Those found are sorted into increasing magnitude order, and presented, five at a time to the user. Stars which are inside the hole at the 42" or inside the instrument field at the 72" are excluded. If the telescope is currently locked on a track rate, a time, in seconds, is given for each star. This is the time that the guider can stay locked on that star before the head would have to stop moving due to the walls or to the instrument field. In sidereal lock this field is shown as N/A. The distance (in arcsec) between the current position of the guide head and each star in the list as well as the distance (in arcsec) between the current position of the guide head and the home position.
At any time, the user can give a star number and the stage will move to that star, or the user can enter a zero (or CR) to begin guiding on the current object. Also, one may ask for the next five stars (-3), exit GGS (-2), or one may bring up the guider screen (-2) and/or adjust the guider camera at any time using the hot keys.
|
| GHO |
Guider HOme. Move the guider head to the current home position at (0,0). ESC may be used to abort the move. |
| GIF |
GuiderInstrument Field size. Input the instrument field size radius in arc-minutes. If the pickoff mirror enters the region defined by the instrument field size, a warning is flashed on the screen. This command is
only available at the 72". |
| GIG |
Guider move current Instrument location to the Guider. Move the telescope such that the RA/DEC of the instrument (ie the current telescope position) becomes the RA/DEC of the guider. As a result, the object in the instrument is moved into the guider box. |
| GIN |
Guider axes INitialization. Does the same initialization as on startup if the guider position file is missing. Initializes stage X,Y positons and focus (Z) positions. On completion, the XY stage is left in the stow position, the focus (Z) axis is left at zero. |
| GLD |
Guider LoaD image. Load a previously saved image into the guider screen. The image stays on the screen until a carriage return is entered. As with GSV, the default device is F:. |
| GLK |
Guider LocK. Begin guiding. The guiding is assumed to be fixed if the telesope is currently in sidereal lock and with stage motion if the telescope is currently in track rate lock. |
| GOS |
Guider Orientation and Scale.Set the orienation and scale for the guider. The user is asked to place a star in the southeast corner of the frame and press carriage return. The program automatically finds the star in the frame, and centroids on it. It then moves the telescope to the west, waits for the image to stabilize, finds the star again and re-centroids. It then moves the star 30 arc-seconds to the south, waits, finds the star, and re-centroids again. If the guiding mode is video only, this completes the GOS. The scale and orientation of the camera are calculated from these three positions and displayed in the guider screen. If the Lowell guider is being used, the stages are then moved in X, the star is found and centroided. Then the stages are moved in Y, the star is again found and centroided. The stages are returned to their initial position, the star is located again and centroided. Finally the telescope is moved so that the star ends up in the center of the field. The procedure may be interrupted at any time by typing ESC. Upon completion, the user is asked if they want to zero the offsets. If they answer Y, a GZO is performed.
|
| GSA |
Guider Set Autoblack level.Enter a value to use for the autoblack (GAB) command. The initial value is 50 on program startup.
|
| GSI |
Guider Select Integration time.Set camera integration time. The actual time will be an even multiple of the true frame time. An integration time of 0 will yield the minimum possible integration time for that camera mode.
|
| GSL |
Guider Select Lookup table. Choose a lookup table for the frame grabber. One of eight pre-set tables may be selected. In most cases, this command will not be used by the average user.
|
| GSN |
Guider Scan. Move the guider camera in spiral search pattern.
|
| GSO |
Guider Set Offsets. Move the stages as in GXY. On exit, the net offset is saved.
|
| GSP |
Guider Show Parameters. Display the current GSO offsets. If a GOS/GEG has been performed, the scales and rotations are also given.
|
| GSS |
Guider Slow Scan. Set camera to slow scan mode (0.133 sec per frame) |
| GST |
Guider STow. Move the guider head to the stow position in the corner of the guider. ESC may be used to abort the move. |
| GSV |
Guider Sa Ve image. Save the current image on the guider screen in a FITS file. If no device is specified, the program defaults to drive F: which is on the Sun workstation. The resulting file is written in FITS and may be examined using IRAF. |
| GSW |
Guider Stow Warning. This is a toggle. Wnen it is on, a red flashing message appears in the ``Stow'' area of the guider screen whenever both guider stage axes are not in the stow position. If it is off (which it is on startup of MOVE), then nothing appears in this window if both stage axes are not in the stow position. |
| GTP |
Guider Test Pattern. Load a test pattern into the guider screen. The image stays on the screen until a carriage return is entered. |
| GTV |
Guider TV. Set camera to TV scan mode (0.033 sec per frame) |
| GXY |
Guider move stages in XY.
|
| GZO |
Guider Zero Offsets. Set the GSO offsets to zero. |
