Optical Observation and Discovery with All-sky Survey

这项研究的目的是充分利用全天探测高分辨率空气簇射探测器ASHRA的广视场和高分辨率的先进特性，从发现瞬变或前兆光瞬变来解决伽玛暴物体中的能量耗散机制。我们已经安装了探测器系统，开发了数据采集和慢速控制监测系统，并开始在夏威夷岛上莫纳罗亚的天文台进行广泛的野外观测，以保持持续的稳定性。我们在17个月的时间里积累了2774小时的观测时间。天气良好率和作业效率分别达到90%和99%。我们已经成功地搜索到了与斯威夫特或费米触发的伽玛暴有关的光学瞬变。

The purpose of this study is aimed for resolving out the energy dissipation mechanism in GRB objects from the discovery of prompt or precursor optical transients fully utilizing the advanced features of wide field as well as high resolution of All-sky Survey High Resolution Air-shower detector ; Ashra. We have installed the detector system, developed data acquisition and slow control monitoring systems, and started wide field observation keeping persistent stability at the observatory on Mauna Loa on the Hawaii Island. We have accumulated 2774 hours of observation time in 17 months. The good weather rate and operation efficiency achieved 90% and 99% respectively. We have already succeeded in searches for optical transients associated with the GRBs which Swift or Fermi triggered.