|STIS Instrument Handbook for Cycle 25|
This slit is supported with the first-order gratings and prism. This aperture is the 2 pixel wide slit in the dispersion direction for the CCD first-order modes.Observations with this slit require a PEAKUP prior to scientific observations.
Table 13.19: 52X0.1 Throughputs
Figure 13.66: 52X0.1 Aperture Throughput as a Function of Wavelength.