Burton C H, Leistner A J, Rust D M
Appl Opt. 1987 Jul 1;26(13):2637-42. doi: 10.1364/AO.26.002637.
Observations of nonradial solar oscillations require Doppler velocity measurement at many points over the photosphere with a velocity resolution better than 1 m/s. An attractive form of imaging spectrophotometer for such a task utilizes a thin, solid, electrically tunable Fabry-Perot interference filter or etalon made of an electrooptic material such as lithium niobate (LiNbO(3)). The problems to be overcome in producing such an etalon for an imaging spectrophotometer are discussed and practical solutions demonstrated on the basis of measurements made on prototype devices.
对非径向太阳振荡的观测需要在光球层的多个点进行多普勒速度测量，速度分辨率要优于1米/秒。用于此任务的一种有吸引力的成像分光光度计形式采用了由电光材料（如铌酸锂（LiNbO₃））制成的薄固体电可调法布里 - 珀罗干涉滤光片或标准具。本文讨论了为成像分光光度计制造这种标准具时需要克服的问题，并根据对原型设备的测量结果展示了实际解决方案。
