Close × 2022 March 19: The HLA footprint viewer no longer works because it relies on Flash. If you need footprints, we recommend using the MAST Portal. Note that the Portal also gives access to the new Hubble Advanced Products (HAP), which include more recent observations. The HLA contains no observations acquired after 2017 October 1.

Hubble Legacy Archive
DER_SNR: A simple and general spectroscopic signal-to-noise measurement algorithm

The original ST-ECF DER_SNR page can be accessed via this link.

This page contains the implementation of a signal-to-noise ratio estimator, DER_SNR, that follows the definition set forth by the Spectral Container Working Group of ST-ECF, MAST and CADC.

A detailed description and discussion of the algorithm can be found in Issue #42 of the ST-ECF newsletter.

The following code is maintained by Felix Stoehr <fstoehr [at] eso [dot] org>.