It is possible to keep a log of the directions in which the telescope was pointed throughout the night using the program POINT. This is particularly valuable for analysing the geometrical errors of the mounting. Pointing tests are always done with the catalogue PTGRID.CAT which is permanently on disc. To make this catalogue available type IN PTGRID.CAT at the User-Interface. To use POINT at the Control System Terminal type
* POINT JKT
The * is the usual 3220 prompt. The output file for this program is POINT.DAT. If the computer responds "POINT.DAT" already exists" then rename it.
* REN POINT.DAT, OLDPO.DAT
Report this action to the Software Manager so that the old file can be archived or deleted as appropriate. Don't forget to do this or the disc will become littered with old pointing files. However don't delete the file yourself unless you are positive that it is of no interest.
Thereafter press 'LOG' on the console every time you centre a star. It should light up for a brief moment.
At the end of the night you can print the file. First stop the POINT program by typing ENDPOINT and then switch the printer to INSTRUMENT 3220 and press the ON-LINE button to re-initialise the interface.
* PRINT POINT.DAT
should print the file but if it doesn't, type
If this still doesn't work write a 'Software Error Report' (SER). If the control system is running (in particular if task TNHZ is active) then printing is very slow, so be patient!