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Hubble Space Telescope
STIS Spectroscopic ETC now supports Small Echelle Slits with the STIS CCD for ACQ/PEAKs

The smallest STIS slits, supported for UV echelle spectroscopy, have traditionally not been available in the spectroscopic ETC in combination with the STIS CCD for either spectroscopic acquisitions or ACQ/PEAK simulations. With the Cycle 22.1 ETC release, users wishing to perform spectroscopic acquisitions or ACQ/PEAKs with these small slits can now select them in the CCD slit pull-down menu of the STIS Spectroscopic ETC to perform spectroscopic calculations in the visible. The slits newly available in this mode are marked with "ACQ" in parentheses.