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Guider check-list for each field

  1. With the refractor switch on ``TV", center a star on the grease pencil ``guider box" on the monitor by using the xy stage motion. You will need to turn up the TV voltage pot until you see sky. You can use small telescope motions if needed, but they must be very small or you will lose your field position.
  2. Turn the TV voltage pot all the way down (full CCW).

  3. Move the refractor mirror to ``guider" and press ``find and focus". You will see three numbers: a brightness level, and an x and y value. The brightness level needs to be between 5 and 98, and the x and y values should be near 50 and 50. If the counts are too high or too low, either find another guide star or change the exposure time as follows:

  4. Press ``interrupt" to return to main menu (you will have to hold this down for the length of the integration time)

  5. Press ``track". You should be guiding.

  6. When ready to go to a new field, press interrupt. You will have to hold it for as long as your integration time to be noticed.



next previous contents
Next: What Can Go Wrong
Previous: Calibration of the Guider at the Beginning of the Night
kessel@noao.edu
Mon Apr 3 09:15:22 MST 1995