121 citations · 165 across the 4 of their papers we have counts for
1 paper · 2 filters
N. Zacharias, M. I. Zacharias, G. G. Douglass +1
A first version of the Twin Astrographic Catalog (TAC) of positions for 705,679 stars within −18∘≤δ≤90∘ has been produced. The sky coverage of the TAC is com…