Identification and Analyses in Optical Light of Gamma-Ray Sources with Astronomical Archival Plates

<table>Plate scanning efforts at the Sonneberg Observatory, the largest European plate collection (280 000 plates). More than 200 000 plates were digitized already.</table>

Advances in Astronomy

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Figure 11

Figure 11: Identification and Analyses in Optical Light of Gamma-Ray Sources with Astronomical Archival Plates 