DBCPOL FILTER NAME
Filter or spectral band used to make the observation, as given in the reference cited in the last column of the record. This data set includes the UBVRIJKL - standard wide photometric band system (Johnson, 1965, ApJ 141, 923), standard wide photometric band system VRI (Cousins, 1976, Mem. Roy. Astron. Soc. 81, 25-36 ), IHW - standard cometary filter set developed in the framework of the International Halley Watch program (Osborn et al. 1990, Icarus 88, 228-245), HB - standard cometary filter set developed in the framework of the International Hale-Bopp program (Farnham et al. 2000, Icarus 147, 180-204), and non standard narrow-band and wide-band filters used by different observers. Used in the Database of Comet Polarimetry.