ALMA Memo #366
A Telescope Pointing Algorithm for ALMA
J. G. Mangum
04/30/2001
The stringent pointing specification of 0.6 arcseconds for the ALMA
antennas places some strict requirements on the ALMA pointing model
formalism. In this document we:
- Describe the basic pointing model formalism used at most radio
telescope observatories;
- Present a detailed analysis of the atmospheric refraction
correction used in this model
- Suggest a form for the refraction correction and associated
weather parameter measurement sensitivity which will meet the
ALMA pointing requirement;
- Suggest a structure for the pointing coefficient information for
each antenna.
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