|Space Telescope Science Institute|
|HST CP and Primer for Cycle 23|
Enter the requested proprietary period, either 0, 3, 6, or 12 (months), that will apply to all observations in the program. The default proprietary period is 0 for Large, Treasury, and Calibration GO Programs, and 12 for Regular GO, Medium GO, and Snapshot Programs. See Section 5.1 on Data Rights for more information. The benefits of or need for a non-default proprietary period must be discussed in the ‘Special Requirements’ section of the proposal (see Section 9.3).