沿SNR斜坡向上的中红外漂移扫描
Mid-Infrared Drift Scanning Up The SNR Slope
摘要：
中红外（MIR）观测通常是通过每秒振荡次镜从地面完成的。该斩波用于去除（a）天空变化和（b）阵列背景的快速时间变量分量。然而，这是一个显着的代价，包括减少物体上的光子收集时间，对次镜的严格要求，点头望远镜以消除斩波留下的辐射偏移，以及在实际观测中经常固定的斩波频率，而不管天空条件如何。更糟糕的是，在30米望远镜的时代，切断副镜是完全不切实际的。如果阵列足够稳定，漂移扫描有望消除斩波的必要性。在本文中，我们报告我们的实验使用CanariCam MIR仪器上的10.4米GranTeCan和未来的仪器和实验的影响。
英文摘要：
Mid-infrared (MIR) observations are typically accomplished from the ground through oscillating the secondary mirror a few times a second. This chopping serves to remove the fast time variable components of (a) sky variation and (b) array background. However, there is a significant price to pay for this, including reduced on-object photon collection time, stringent demands on the secondary mirror, nodding the telescope to remove the radiative offset imprinted by the chopping, and an often-fixed chop-frequency regardless of the sky conditions in the actual observations. Worse, in the era of 30m telescopes it is wholly impracticable to chop the secondary mirror. If the array is stable enough, drift scanning holds the promise to remove the necessity of chopping. In this paper we report our experiments using the CanariCam MIR instrument on the 10.4m GranTeCan and the implications to future instruments and experiments.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
