This is the file /home/sat/inf/CHECKLIST on the insd50 LINUX PC (also file /home/sat/CHECKLIST. On kila: /home1/sat/CHECKLIST)

The reader is assumed to have experience in using SAT!! If not, refer to "A BRIEF INTRODUCTION" (i.e. to /home/sat/inf/satman.02). Numbering below follows "A BRIEF INTRODUCTION", where you find more details. (Some numbers are skipped entirely here.)

This CHECKLIST is specifically designed for an observer, who leaves all windows open during daytime (but screen locked!) If you do not: use 'checklist'. (Jean Mouette/1997, eho/97/98/99/00/01/02/03, beh/98)

Note: Points 2-22 are best done right after sunset (you can then skip 10d-e). If you are busy with another telescope, you can do points 2-10d 60-50 minutes before sunset, and then leave the SAT. (Lock the door.) You may then complete points 10e-22 when it is convenient for you.

  • 2. Go upstairs and open dome (At least half an hour before start - which is 50 minutes after sunset - but not before T(out) < T(dome).)

  • 3. Put motor power on (room next to office).

  • 7a. In the data directory: type vt100

  • 7b. If necessary, type Ctrl-C and enter user number : 0

  • 8a. Type: USE :.D50

  • 8b. Type: MONI

  • 9a. Enter CORRECT UT-date. (Very important for safety reasons/moon coo.) (Use the date in the small window; upper right on screen)

  • 9b. Check Julian date vs. ASTRONOMICAL ALMANAC or other source. (Very important, safety, moon position.)(Date shown is JD - 2 440 000.)

  • 10a. Press: F11
    and then: F7 to reset FEuProcessor,
    wait 10 seconds
    and then: F1 to re-initialize dome (check that DOME automatic is selected - F2)
    and then (after dome has stopped): F5 (no obvious reply/action is seen!) to move the telescope to lid-off position.
    then press F12 (now, you can see the telescope coordinates changing)

  • 10b. Press F9 and assign files for this night (F1: PDyymmdd, F2: GKCAT02, F3: see latest ~sat/OP file: usually GKCOMX02) Press F12.

  • 10c. Go upstairs and take off telescope lid. (After sunset? Open shutter. Then go to 12a.)

  • 10d. If the sun has not yet set, you may now park the SAT in the zenith by F11, F3, F12, and then leave the telescope. Please, lock the door. When it is convenient for you, you may continue with points 10e-22 below.

  • 10e. Select dome AUTOMATIC (F11, F1, F2, F12).

  • 12a. Find bright star near zenith, preferably in the catalog ~sat/sa/ (See satman.02 for suggestions - or master.log in ~sat/data).

  • 12b. Use F3 to set the star position (F3, Enter, type star number, Enter).

  • 12c. Press F2 to go to star.

  • 13. Go upstairs, open shutter on telescope (if not done already). Centre star in field view (a bit right) and then in microscope. Note: Provided the shutter is already open and the CC's are < 40", this point can be done from the keyboard by using F7, then wait for the star to be centred, repeat F7 (star is centred again), and then using shift-F7 to see the scan.

  • 14a. Go downstairs, press: Shift-F10. (Encoder zeroes are reset.)

  • 14b. Find a new bright star, use F3 and F2 to go to the star.

  • 14c. Go upstairs and check that the star is in the microscope (As before, this point can be done by using F7 and shift-F7.) If not, go down, press F10, F10, and Z, then F12. Then repeat from 12a.

  • 18. Go down and start the program with F6.

  • 21. In the data directory: copy master.log to pdyymmdd.log, then type chmod 644 pdyymmdd.log and fill in the log. Use MeteoMonitor (see ~sat/inf/meteomonitor) to get meteo-info for log.

  • 22. Type "tail -f PDyymmdd" in the data directory, to see the data coming in.


    i) To change program:
    1. Stop the current program with F8, wait until SEQUENCING shows OFF.
    2. Change the program with F9.
    3. Start again with F6.
    4. If you leave the building, please lock the front door.

    ii) To recover from an error (Telescope running into horizon switches):
    1. Press F8.
    2. Go upstairs and on the wall press the button and move the telescope toward zenith. If the alarm is still on while pressing the button, check the weights and switches. (See satman.02, starred box in point 12.)
    3. Go downstairs, press F11, F7, and wait 10 sec. Press F1 to initialize dome, then F12, and F6 to start the program again.

    iii) Always:
    1. Write about the weather in the log file.

    iv) Stop before end of night:
    1. Press F8, wait until SEQUENCING shows OFF.
    2. Press: F11
    and then : F5 to move the telescope to lid-on position, and F4 to move the dome to parking position.
    3. Continue with F12 and next section END OF NIGHT.


    1. When the MONI display says that you can close the dome (this message only appears after regular stop by END command), go upstairs and put the lid on the telescope. Close the switches and move the microscope in. Replace the black protection caps on microscope and finder.
    2. Close the dome.
    3. Go downstairs, send SAT towards the parking position with F11, F3, and F12.
    4. Exit tail by Ctrl-C (in the correct window!! Ctrl-C crashes MONI!!)
    5. Finish and close the log file and write-protect everything in the data directory (by chmod 444 *). Move the night's observations from PDyymmdd to pdyymmdd.
    6. After SAT has reached zenith, check SAT position visually (!), close MONI with F12. Close the vt100 window with the End key.
    7. Turn motor power off.
    8. Close all files in all windows in all 6 work spaces.
    9. Lock monitor screen.
    10. Lock the door to the building when you leave to safeguard against theft of the PC (has happened!), unauthorized use of the open net connections,etc.
    11. Sleep well!


    If all activity stops for no obvious reason while you are running an automatic command file, it is advised that you check the group of 4 'flags', which show the TELESCOPE STATUS. If, for example, the PHOTometer flag shows RUN, while AC and/or CouNT flags show PeNDing, this means that some of the mechanical photo- meter functions are not completed, i.e. a prism is stuck between the 2 positions or the diaphragm wheel cannot be turned from position 3 to 2 (to allow AC to go on). You can safely use the buttons on the gray box (which stands besides the monitor in the office) to move the prism or the diaphragm wheel. MONI will then immediately go on with whatever the command file has specified.