论文标题
使用漂移扫描成像II：持续时间<21 ms且幅度<6.6
High Cadence Optical Transient Searches using Drift Scan Imaging II: Event Rate Upper Limits on Optical Transients of Duration <21 ms and Magnitude <6.6
论文作者
论文摘要
我们已经意识到了一个简单的原型系统，可以利用Tingay（2020）描述的新型漂移扫描成像技术进行短时尺度光学瞬变。我们使用了两个协调和对齐的摄像机，在观察大约24小时内，捕获了34000 x 5秒的超过34000 x 5秒图像的重叠视野。由于每个像素的有效曝光时间为21毫秒，该系统对光瞬变很敏感，比V幅度的6.6更明亮。在我们的89.7平方英尺中观测值的HR我们发现没有候选天文瞬态，给这些类型的其他实验的每天0.8平方英尺的瞬变速率上限。该系统是由卫星的反射和各种仪器效应触发的，由于两个摄像头系统，它们很容易识别。这种有前途的技术开发的下一步是转向具有更大光圈和更广阔视野的系统。
We have realised a simple prototype system to perform searches for short timescale optical transients, utilising the novel drift scan imaging technique described by Tingay (2020). We used two coordinated and aligned cameras, with an overlap field-of-view of approximately 3.7 sq. deg., to capture over 34000 X 5 second images during approximately 24 hours of observing. The system is sensitive to optical transients, due to an effective exposure time per pixel of 21 ms, brighter than a V magnitude of 6.6. In our 89.7 sq. deg. hr of observations we find no candidate astronomical transients, giving an upper limit to the rate of these transients of 0.8 per square degree per day, competitive with other experiments of this type. The system is triggered by reflections from satellites and various instrumental effects, which are easily identifiable due to the two camera system. The next step in the development of this promising technique is to move to a system with larger apertures and wider fields of view.
