Space Telescope Imaging Spectrograph Instrument Handbook for Cycle 17

2.2 New Versions of STIS Exposure Time Calculators

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Java-based versions of the Exposure Time Calculators (ETCs) have been developed for all HST instruments; the switch to the Java ETCs was made in order to standardize the calculators for all the instruments, both to simplify development and support, and to provide a more consistent interface. Users will find that these ETCs provide more realistic calculations and improved cross-instrument consistency. The STIS ETCs are available from our Web site at:

http://www.stsci.edu/hst/stis/software/etc

At the time of the publication of this document, the sensitivities adopted are our best estimates for August 2008. These will be updated when on-orbit data are available.