Preparatory funding may be requested if necessary to prepare for the receipt of HST data. Proposers may request that up to 25%
of the total approved amount for their programs be awarded prior to the start of the Cycle 21 observing schedule. However, such funding is not available prior to the Directorate approval of funding for Cycle 21 programs. Preparatory funds are part of the overall funding allocated for the program, and are not additional funds. Pre-award expenditures may be incurred, but at the risk of the investigator. All funding (including preparatory funds) is subject to the availability of funds from NASA.