Start searching the DASCH Plate Collection database using the instructions below.
Search DASCH
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Starting Date (YYYY-MM-DD, or YYYY)
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Ending Date (YYYY-MM-DD, or YYYY)
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only the unscanned plates,
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only scanned plates,
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the WCS Fitted Plates (Plates that have been scanned and have had their coordinates mapped to the positions of the sky)
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WCS Fitted Mosaic positions obtained after June 26, 2008 used tools provided by Astrometry.net.
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the entire database of plates
Epoch: Choose whether the resulting coordinates should be referred to in terms of Besselian epoch (B1950), the previous standard, or the Julian epoch (J2000), the current standard. A star's right ascension and declination are always changing due to precession, so astronomers have to specify the date for which a right ascension and declination apply, with reference to a particular epoch.
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Radius to extract: Choose a radius (in arcseconds) to search.
- Starting Date (YYYY-MM-DD, or YYYY)
- Ending Date (YYYY-MM-DD, or YYYY)
-
only the unscanned plates,
-
only scanned plates,
-
the WCS Fitted Plates (Plates that have been scanned and have had their coordinates mapped to the positions of the sky)
-
WCS Fitted Mosaic positions obtained after June 26, 2008 used tools provided by Astrometry.net.
-
-
the entire database of plates
-
Plate Number
Magnitudes and Light Curves
The existing light curve search tool is no longer maintained and may return errors when executing queries. Refreshing your browser may help with errors received due to timeouts.
We look forward to sharing new tools with you as we move forward with our technical overhaul of the DASCH technology stack. We intend to provide updates as soon as possible, but we cannot provide specific dates at this time.
If you have questions please contact Daina Bouquin, Head Librarian of the Wolbach Library.