|Since IAU GA 2006, this WG has been absorbed by the task force on "Preservation
and Digitization of Photographic Plates (PDPP)" chair Elizabeth Griffin
|Nuns at work measuring the Vatican plate collection (1910-1921) |
This Working Group was established by the IAU Commissions 8 and(former) 24 in 1994 to evaluate the present state of the 100-year old photographic plates of the Astrographic Catalogue (AC) and Carte du Ciel (CdC) programmes, in order to prove the necessity of the measurement orre-measurement of the plates and to work out recommendations on the scientific use of one-century old stellar positions and apparent magnitudes in consideration of the overall plate quality. It has been re-appointed since then ateach IAU General Assembly meeting.
|Contact print of a Carte du Ciel plate of the Vatican zone (Torino Osbervatory) |