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On April 13, 2015 archive account management will transition to a new STScI account management system. Some people will receive email about how this change affects their account(s). For more information about these changes click here.

Data Use Policy

Although there is no cost involved in retrieving data from MAST, researchers are requested to include an acknowledgement (as shown below) in any publications that make use of data obtained from MAST:

"Some/all of the data presented in this paper were obtained from the Mikulski Archive for Space Telescopes (MAST). STScI is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555. Support for MAST for non-HST data is provided by the NASA Office of Space Science via grant NNX13AC07G and by other grants and contracts."

Users wishing to use documents obtained from the MAST web site for other than personal use, should first contact the MAST staff at regarding necessary permissions and acknowledgements.

Note for Kepler Users:

Publications based on data obtained from the Kepler project are requested to include the additional acknowledgement:

"This paper includes data collected by the Kepler mission. Funding for the Kepler mission is provided by the NASA Science Mission directorate."

Note for HLA Users:

All refereed publications based on data obtained from the Hubble Legacy Archive (HLA) are requested to carry the following footnote:

"Based on observations made with the NASA/ESA Hubble Space Telescope, and obtained from the Hubble Legacy Archive, which is a collaboration between the Space Telescope Science Institute (STScI/NASA), the Space Telescope European Coordinating Facility (ST-ECF/ESA) and the Canadian Astronomy Data Centre (CADC/NRC/CSA)."

In addition, publications of research supported by an STScI grant must carry the following acknowledgment:

"Support for Program number ____________ was provided by NASA through a grant from the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Incorporated, under NASA contract NAS5-26555."