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DASCH Data Release 7
Center for Astrophysics | Harvard & Smithsonian DASCH project, 2026. Digital Access to a Sky Century @ Harvard (dasch.cfa.harvard.edu).
The legacy release of the Harvard plate digitisation, completed in 2024: about 23.6 billion measurements of 252 million sources from about 1880 to 1990, scans of 429,274 plates, calibrations and logbook photographs, served through the daschlab Python package and web APIs.
What it's used for here
The source of the century-long light curve and of any re-test of the fade.
Our copy
Research copy, for editors and curators. The work is Harvard terms of use; acknowledgement and citation requested, so readers are sent to it. We keep this copy so the citation can be checked if the page changes or goes.
dasch.cfa.harvard.edu · fetched 27 Oct 2026
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Cited by on this site 4 records
Cite it
DASCH project, C. f. A. |. H. &. S. (2026). DASCH Data Release 7. Digital Access to a Sky Century @ Harvard (dasch.cfa.harvard.edu). https://dasch.cfa.harvard.edu/dr7/
@misc{dasch2026dr7,
author = {DASCH project, Center for Astrophysics | Harvard & Smithsonian},
title = {DASCH Data Release 7},
howpublished = {Digital Access to a Sky Century @ Harvard (dasch.cfa.harvard.edu)},
year = {2026},
url = {https://dasch.cfa.harvard.edu/dr7/}
}TY - GEN TI - DASCH Data Release 7 AU - DASCH project, Center for Astrophysics | Harvard & Smithsonian PY - 2026 JO - Digital Access to a Sky Century @ Harvard (dasch.cfa.harvard.edu) UR - https://dasch.cfa.harvard.edu/dr7/ ER -
DASCH project, Center for Astrophysics | Harvard & Smithsonian. “DASCH Data Release 7.” Digital Access to a Sky Century @ Harvard (dasch.cfa.harvard.edu) (2026).