ICIMACS for ANDICAM: Software Notes

7/27/99 : JAM


Disk Synchronization

Users occasionally note that they are having difficulty getting the data disks between the WC and IC or IR to synchronize on startup (symptom: prospero reports "-Synch" in its status screen and reports errors after running startup). If full reboots are not solving the problem, you can attempt to force synchronization of the disks manually: Check the WC status screen. Near the middle of the screen is a box with disk synchronization information. If any of the machines' names are followed by the word "-SYNCH", follow the directions below.

CB -SYNCH:
Make sure that caliban is running on the sparc station, then type

>WC REQ INITDISK

in the caliban console window.

IC -SYNCH:
On the WC keyboard, type

>IC REQ INITDISK

IR -SYNCH:
On the WC keyboard, type

>IR REQ INITDISK

Note: If the instructions above don't help, then it may be the case that the WC was not able to detect the IC or IR disks on startup. The only fix for this is to turn the WC off and then back on again. If even this fails, turn the power off on all three PCs (WC,IR and IC) and turn them all back on again at the same time.


Readout Amplifier(s) Selection

ICIMACS supports 3 readout modes of the CCD in ANDICAM: readout of the entire device through the BR amplifier, through the BL amplifier, or using both amplifiers to reduce the readout time. Selection of the amplifer(s) used is through the READOUT command:

READOUT br
selects the BR amplifier

READOUT bl
selects the BL amplifier

READOUT brl
reads out using both BR and BL.

Focus Frames

A primitive method for producing focus frames is now included in the ANDICAM IC code. The example below produces a multiple exposure of six images of the same star at six different focus settings:
Acquire a bright star

Set the starting focus

Select image type FOCUS using the FOCUS command and give the object name:
FOCUS a bright star

Set the exposure time to be used for each exposure:
EXP n

Enter the filename to be used for the resulting image:
FILENAME ccdfocus.001

Start readout mode and erase the CCD:
GO

Open the shutter and take the first exposure:
SHOPEN

Offset the telescope to move the star

Change the focus setting

Open the shutter and take the next exposure:
SHOPEN

Offset the telescope to move the star

Change the focus setting

Open the shutter and take the next exposure:
SHOPEN

Offset the telescope to move the star

Change the focus setting

Open the shutter and take the next exposure:
SHOPEN

Offset the telescope to move the star

Change the focus setting

Open the shutter and take the next exposure:
SHOPEN

Offset the telescope to move the star

Change the focus setting

Open the shutter and take the next exposure:
SHOPEN

Readout the array and save the image to the current mount point:
RESUME

Region-of-Interest

There is at present no region-of-interest selection with the ANDICAM detector. The ROI command has no effect on readout with this instrument
Imaging Sciences Laboratory
Revised: July 27, 1999 [jam]