UBVRI system | Article about UBVRI system by The Free Dictionary
UBVRI system[¦yü¦bē¦vē¦är′ī ‚sis·təm]
An extension of the UBV system through measurements of an object's apparent magnitude with red (R) and near-infrared (I) filters.
References in periodicals archive
Warell and Bergfors (2008) used a CCD camera to measure the brightness of Mercury in the UBVRI system
. Their measurements cover solar phase angles between 22[degrees] and 152[degrees].