A number of new aperture locations have been implemented for STIS. Here we describe these new aperture locations and their intended purposes. Note that all of these new apertures define new positions within existing apertures. As a result, the APERTURE keyword in the headers of the archived data will contain the name of the parent aperture, while the PROPAPER keyword will contain the aperture name specified in the Phase 2 proposal. For example, if the Phase 2 proposal requests the 52X0.1D1 position, the APERTURE keyword will be set to 52X0.1, while the PROPAPER keyword will be 52X0.1D1.
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