• Check that Nasmyth turret is set to GHRIL!
• DECnet and not Drama communication should be used (no TELD task should be present on the TCS terminal). Easiest way is to bring up the TCS from ICL:
  ICL>TEL_LINK_TO_TCS - Check communication by ICL> page
• USER> STATION GHRIL_ROT
• USER> INSTRUMENT INTEGRAL
• USER> AGSELECT INTEGRAL
• Zeroset AZ and ALT
  
to zeroset on the targets switch to computer control:

• USER> AZ 298
• USER> ALT 89
• USER> ENG
• USER> ZERO AZ TAR
• USER> ZERO ALT TAR

Drive AZ and ALT slowly in + direction over the zeroset target points, then switch to computer control again

to zeroset absolute:
• USER> ZERO AZ ABS
• USER> ZERO ALT ABS

Zeroset absolute will go wrong in case an absolute encoder bulb is broken! When slewing to the first object check azimuth and altitude incremental and absolute encoders are in close agreement and updating.
• USER> ZERO ROT ABS

Before zerosetting the rotator, ensure that the mount PA is around 180. It is important to visually inspect that the rotator is in the correct position (i.e. with the 0 mark on the plate far away from the top) as otherwise it can run into a hardware limit (37-385 degrees of motion of MOUNT PA).
• USER> WAVELENGTH ...
• USER> TEMP ...
• USER> PRESS ...
• USER> HUMI ...
• USER> CAL LAST
• USER> FOCUS 95.0

Autoguider:
-V4.5dev9- for use with INTEGRAL To load the system from a floptical disk, do the following - ensure that the required floptical is in the insite (floptical) drive above the autoguider VME rack, reset the VME and go to the autoguider command terminal and interrupt the boot sequence with control_c; enter the command INSITE RELOAD at the forth prompt. Select INTEGRAL when prompted during start-up. Note that INTEGRAL uses the PRIME serial port.
The AG has got two fibre bundles for acquiring a guidestar; Inner & Outer probe. Each bundle has a FOV of 18 x 18 arcsec, total area available for guiding is 30 arcmin squared.
In case the autoguider fibres are not right in the fibre windows on the autoguider screen type:
ENG
CONFIG.....see the system configuration menu and select WIN=position of the fibre windows on screen.
Select appropriate menu: 7 for integral fibre A or 8 for integral fibre B; now you have the fibre adjusting menu and use the one you want.

TV:
The INTEGRAL is equipped with its own TV camera to view the acquisition bundle. FOV is 22.5 x 30.2 arcsecs, filling almost the whole screen. TV connected to VME, and is activated as normal by either 'slitview' or 'UES dir' keys on TV keyboard. TV switches H=down and V=up ensures North is up and East is left at SPA=0.

Observing System:

• Log-in to LPVF or LPVG (check the white board) as observer.
• When asked if you want to start the observing system reply NO.
• At the VMS command prompt type: @v9-0b1_system (check also the white board).
• When asked if you want to start the observing system reply YES.
• At the VMS command prompt, type: ICL.
• Now select the right setup "WYFFOS using INTEGRAL".

Engineering Mode Control:
-To start the WYFFOS mimic, log in to lpss3 (from a xterm), as user wyffos and type start_eng.
-To start the INTEGRAL mimics, log in to orion.roque (from a xterm) as user whtmimic.
Now, type start_integral.

Determine rotator center:
-Move the SWING PLATE to acquisition bundle viewing.
-Note (x,y) of star on TV, move mount PA ~180 degrees, note new (x,y) and calculate center.

Calibrate procedure:
Calibrate is done with respect to the rotator center and at fixed mount PA using the acquisition bundle viewing.

Determine aperture offset:
The science fibre bundles are designed such that the center fibre will coincide with the rotator center. This is not necessarily true for the acquisition bundle due to the manufacturing process. Therefore an aperture offset is present with respect to the acquisition bundle. Center a star on the RC (acquisition bundle), move to the science bundle and take an exposure. The SA then can tell you which way to move the telescope in RaDec. Check what this means in the XY system used for aperture offsets. Now apply the offset in APOFF mode and store the aperture.

• Center up target on the acquisition bundle at the rotator center
• If necessary, perform a blind offset to the science target
• Move the swing plate to one of the science fibres (ISPFC [sb1,sb2,sb3]). Note that from this point onwards you will no longer be able to see the object on the TV!!

Autoguiding:
Two fibrebundles are available for guiding as INNER PROBE and OUTER PROBE. As with UES, use the autoguide command FM 1,2,3,4 to select which one to be read out and activated for guiding. To check the the guiding bundles are properly mounted, do the following:
- Locate the slide unit at (65237,0).
- Align a star at the rotator center at Sky PA 0.
- Applying an offset of 212 (386) arcsec South the star should appear at the center of inner (outer) guiding bundle.
If no stars appear, the slide unit might need zerosetting. Use the DATUM option on the Integral Engineering Mimic.
The command to send the probe to a position is given from the ICL (IXA and IYA) or the shortcut
"ISA xxxxxx yyyyyy", or from the INTEGRAL engineering terminal.
To move a guide star offsetting the probe, increase X or Y according to the following picture:

                        |--------------|
                        |              |     SPA = 0 :
                    ^   |   <-----+    |     +X -> Telescope West
                    |   |         |    |     -X -> Telescope East
                  4000 Y|         |    |     +Y -> Telescope North
                    |   |         |    |     +Y -> Telescope South
                    v   |         v    |
                        |              |
                        |--------------|
                                X
                          <-- 4000 -->

Finding guidestars are done with GSS (or script @GS):

• GSS>CON WHT INTEGRALINNER (INTEGRALOUTER)
• GSS> ROT {sky pa}
• GSS> SEA hh mm ss dd mm ss equinox
• GSS> EXIT
• $> TYPE OUTPUT.GS

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Last Updated: 15 July 2001 P. Sorensen pms@ing.iac.es