Information on resource 'Scans of the Palomar-Leiden Trojan Survey Plates'

This service publishes plate scans of the Palomar-Leiden Troian surveys conducted between 1960 and 1977. The surveys led to the discovery of more than 2,000 asteroids (1,800 with orbital information), with another 2,400 asteroids, including 19 Trojans, found after further analysis of the plates.

Note that because of the large size of the plates, in this service each original plate is contained in two parts, marked with "_1" and "_2", respectively. The central parts of the two parts overlap.

Emulsion and Filter

Most plates had a Kodak 103a-O emulsion, exposed through a WG-2 filter.

One pair per field was taken each month on Kodak 103a-D emulsion, using a Y-6 filter.

Best effort is made in determining emulsion and filter; metadata regarding those values are incomplete.

Services defined within this resource descriptor

Tables defined within this resource descriptor

Based on photographic plates obtained with the Samuel Oschin telescope at Palomar Observatory. Digitization project by the Astronomisches Rechen-Institut (ARI/ZAH), Heidelberg in collaboration with the Institut fuer Erdmessung (IFE), Hannover and funded by the Klaus Tschira Foundation gGmbH.

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