The DASCH project has been a herculean effort spanning two decades.
In order to ensure that the plate scanning is brought to completion, and that
the resulting data are archived and as useful as possible, the project is
undergoing an overhaul under the direction of the Harvard College Observatory.
During this time, our servers will be down and access to DASCH data via
existing interfaces will be limited. Please contact
Purvang Patel, Executive Director at the
Harvard College Observatory, if you have questions.
Enter the J2000 object position or a Simbad-searchable reference in the box below and press
to obtain the lightcurve query results in a separate window. The search center is currently restricted to released regions
, a maximum of ten entries, and a maximum search radius is 60 arcsec.
Note that the positions returned by Simbad may not necessarily match the DASCH positions because of discrepancies between catalogs. DASCH positions are corrected by UCAC4 proper motions until May 31, 2018 when we switched to UCAC5 proper motions. The latter positions may be identified by a versionId of 173 or later.