Proposal on the Procurement and Specifications of the ACA 12-m Antennas
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چکیده
In the procurement of the ACA 12-m antennas, NAOJ has a difficulty of discrepancy between the estimated cost and the appropriated budget. To avoid the risk of being unable to make a contract for the antennas, that can be a huge damage to the future ALMA funding in Japan, NAOJ requests an approval of its conservative approach by modifying the following terms in the technical specifications without serious damage to the science capabilities of the ACA antennas, in order to ensure a successful contract as scheduled: 1) Reduction of the maximum acceleration in azimuth and elevation --10 deg s instead of 18 deg s in azimuth and 5 deg s instead of 9 deg s in elevation. This change has a minimal impact on science and observations performed with the ACA system.
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