All Tables

• Table 1: Arecibo OH/IR stars without optical/near-infrared counterpart. Coordinates are from radio interferometry (N=2) or from MSX.
• Table 2: Median and mean separation (and standard deviation) between Calar Alto (CA) coordinates and IRAS, MSX and VLA ones.
• Table 3: Very red sources with unusually bright and/or blue near-infrared counterparts identified as candidate post-AGB stars or proto-planetary nebulae.