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Observatory Support
STScI Exposure Time Calculators Oversight

The ETC Request ID

For every calculation performed with the ETC, an ID is provided at the top of the output page.  Users who report problems or seek help on the use of this estimator should always provide this ID in their help request. Failure to provide it may make it impossible to properly resolve any problems.

The ETC ID can also be used to view the results produced by a previous request. On the ETC web pages, there is a link labeled Previous calculation results at the bottom of the menu area on the left side of the page. Clicking that link will take you to the page shown in Figure 1: Previous ETC Calculation Result. Enter the full ID as originally given into the Exposure ID field and click the "my previous ETC result" button.

graphic: request previous result by ID