Changes between Version 1 and Version 2 of HetProcedures/RA/nst


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Timestamp:
Dec 30, 2023 7:17:52 AM (5 months ago)
Author:
stevenj
Comment:

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  • HetProcedures/RA/nst

    v1 v2  
    22
    33The script {{{nst.py}}} will, after a guider is activated, repeatedly offset the guiding fiducial to compensate for the non-sidereal motion of a source on sky.
     4
     5Note that this method allows non-sidereal sources to be tracked as long as they do not move more than ~10" during the observation (due to the limited field of view of the guider cameras). The FoV is ~20" but we assume you start from a well-centered guide star. For HPFACAM setups the actual range available may be even smaller due to the required fiducial offsets in the setup. Consult your local TO for more details/insight on optimizing this procedure.
     6
    47
    58To make this work, do the following:
     
    3235}}}
    3336
    34 By default it will make fiducial updates once per minute. You can change that with the command-line argument {{{--step}}} which accepts decimal values in minutes (0.25, 0.5, 2, whatever you want).
     37   By default it will make fiducial updates once per minute. You can change that with the command-line argument {{{--step}}} which accepts decimal values in minutes (0.25, 0.5, 2, whatever you want).
    3538
    36396. When the TO activates a guider, the script will report that it has identified which guider is active and will begin making automatic fiducial updates to that guider's fiducial until you stop it.