CFHT, Instruments,
Imaging,
AOB,
Hot Spot
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The CFHT Adaptive Optics Bonnette :
Hot Spot
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What is the Hot Spot :
The Hot Spot is the location that is defined as the position of the
star when the wavefront sensor is "on-axis". This has to coincide with
the telescope pointing axis so that when a star is acquired, it will be
aligned with the wavefront sensor. Usually the hot spot is defined to be
a little bit off axis because the center of KIR has a row and a column
that are less than perfect. Note that unless the observer requires it,
this should only be done on the first night of an AOB run.
Procedure :
After the OA has set up on their meridian/equator star, have them go
to a guide star:
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If there are counts, start correction.
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Else If there are no counts:
Created 7 July 2000.
Page maintained by Olivier Lai.
Please send comments to : lai@cfht.hawaii.edu