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2 November 2011Retrieval of spectroscopic information from the Tonantzintla Schmidt camera archival plates
There is a relevant and growing effort in Astronomy to store observations in Virtual Observatories to make better use and
exploitation of modern and archival data. In that perspective, we are in the process of not only digitalizing the
Tonantzintla Schmidt Telescope plate archival (about 15000 plates from 1942-1995), but actually developing a semi-automatic
system to process the large amount of direct-imaging and objective-prism data into a homogenous and
calibrated set, in order to create an astronomically useful catalogue for data mining and analysis. In particular, for the
4120 spectroscopic plates, the system consists of a series of algorithms that: locate and extract spectra; determine and
apply the proper wavelength calibration; carry on the astrometry solution; correlate the astrometry with direct images of
the archive (when available); and to label all identifiable objects. In this work we discuss the overall strategy to be
implemented and present preliminary results.
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Raquel Díaz-Hernández, J. Jesús González, Rafael Costero, José Guichard, "Retrieval of spectroscopic information from the Tonantzintla Schmidt camera archival plates," Proc. SPIE 8011, 22nd Congress of the International Commission for Optics: Light for the Development of the World, 80117Z (2 November 2011); https://doi.org/10.1117/12.903386