Fisher R R, Lee R H, Macqueen R M, Poland A I
Appl Opt. 1981 Mar 15;20(6):1094-101. doi: 10.1364/AO.20.001094.
A new set of instruments, consisting of two coronagraph systems, has been installed and is operating at the Mauna Loa Observing Station, Hawaii, operated by the High Altitude Observatory of Boulder, Colorado. The instruments are the 23-cm objective Mark III K-coronameter (K-III) system, a photoelectric instrument used to observe the inner solar corona from 1.2 R(0) to 2.2 R(0) and the 12.5-cm objective Prominence Monitor system used for the detection of H(alpha) limb activity. New features of the K-coronameter system include the use of achromatic wave plates for wide bandpass operation and linear diode array detectors. Raster scans of the coronal image are obtained in 1.5 min for a critical sampling scheme of 20-sec of arc resolution (10 x 10-sec of arc pixels) in the coronal p(B) image. This represents a 350 information gain factor for each detection channel when compared with the previous Mauna Loa K-coronameters.
一套由两个日冕仪系统组成的新仪器已安装在夏威夷的莫纳罗亚观测站并投入运行，该观测站由科罗拉多州博尔德的高海拔天文台运营。这些仪器包括23厘米物镜的马克三号K日冕仪（K - III）系统，这是一种光电仪器，用于观测从1.2个太阳半径（R(0)）到2.2个太阳半径（R(0)）的太阳内冕，以及12.5厘米物镜的日珥监测系统，用于探测H(α)边缘活动。K日冕仪系统的新特性包括使用消色差波片进行宽带通操作以及线性二极管阵列探测器。对于日冕p(B)图像中20角秒分辨率（10×10角秒像素）的关键采样方案，在1.5分钟内可获得日冕图像的光栅扫描。与之前莫纳罗亚的K日冕仪相比，这意味着每个检测通道的信息增益因子为350。
