The INT WFC Pointing Model

Contents

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1. One Star Calibration

2. Seven Stars Calibration

3. Full Pointing Calibration

1. One Star Calibration

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This could be followed in case the observer has problems finding the target.

The following link of the Observing Manual includes the procedure for one star calibration.

2. Seven Stars Calibration

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This must be followed by the observed in case the one star calibration does not improve the pointing. Also, the seven star calibration must be followed by all ING students during the first S/D night of any new run. Please write doen the RMS and report them to the instrument specialist.

The following link of the Troubleshooter Guide include the procedure for seven stars calibration.

3. Full Pointing Calibration

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This should be performed only by the ING staff more rarely (once ~each year) to assess the INT poiting model.

The following automatic script to observe a full grid of stars to make a poiting model is in the intics machine, in

SYS> pointing/autopnt_wfc

(click here for the ascii version)

It runs automatically and takes about 2 hours. When done, please inform the Software group for the analysis of results.