Use
Case: Stop VLTI Focus Adjustment
Description:
Part of the focusing procedure (on general interferometer control level)
is to find the best focus for each telescope at the Combined Focus. In
this Use Case, the new actual focusing position is stored and used for
updating the Coude-Focus-VLTI reference position.
Role(s)/Actor(s):
Primary: User (Operator, Maintenance, VLTICS-ISS)
Secondary: M2
Priority:
Major.
Performance:
A
few seconds (10-15 seconds)
Frequency:
Whenever
necessary.
Preconditions:
Basic
Course:
-
Send command STOPFOC to stop VLTI Focus Adjustment
-
ATCS stores current M2 position as new Coude-Focus-VLTI reference.
-
ATCS sends final OK reply
Exception
Course: Command failed
-
ATCS sends final ERROR reply
Postconditions:
-
M2 position has been stored as new Coude-Focus-VLTI reference.
-
Entry in Log File has been created (parameters TBD)
Issues
to be Determined or Resolved:
Notes:As part of the AT Optical Alignment Parameters,
add the focus positions Coude-Focus-FAS, Coude-Focus-FSS
and Coude-Focus-VLTI.
Last modified: Thu Jun 28 13:40:24 UTC 2001
![[Design Description
Entry]](../../../Images/arrow.gif){kind=icon}