HST Two-Gyro Handbook

2.3 Verifying Scheduling Constraints for Phase I

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The Astronomer's Proposal Tool (APT) package contains software to check the schedulability of targets in Phase I proposal forms. When filling out the APT form for their Phase I proposals, proposers will be asked to verify the availability of their targets in two-gyro mode. Proposers should perform this check after they have entered their observation information based upon the tables and plots discussed in the previous sections of this chapter.