title: On the precision of absolute sensitivity calibration and specifics of spectroscopic quantities interpretation in tokamaks.
abstract: Typical situations, which can be met during the process of absolute calibration, are shown in the case of a visible light observation system for the COMPASS tokamak. Technical issues and experimental limitations of absolute measurements connected with tokamak operation are discussed.
authors.forename: D I
authors.initials: DI
authors.lastname: Naydenkova
authors.forename: V
authors.initials: V
authors.lastname: Weinzettl
authors.forename: J
authors.initials: J
authors.lastname: Stockel
authors.forename: J
authors.initials: J
authors.lastname: Matějíček