论文标题
4M ILMT的首次轻型制剂
First light preparations of the 4m ILMT
论文作者
论文摘要
4M国际液体镜望远镜（ILMT）是Aries Devasthal观测站（印度Uttarakhand）的Zenith点光学观测设施。 The first light preparatory activities of the ILMT were accomplished in April 2022 followed by on-sky tests that were carried out at the beginning of May 2022. This telescope will perform a multi-band optical (SDSS $g'$, $r'$ and $i'$) imaging of a narrow strip (~$22'$) of sky utilizing the time-delayed integration technique.单扫描ILMT图像的集成时间为102秒，可以连续的夜晚图像可以共同添加以进一步提高信噪比。图像减法技术也将应用于夜间记录的观测值，以检测瞬变，物体在通量或位置显示变化。目前，该设施处于调试阶段，季风之后的定期运营将于2022年10月开始。本文在首次亮起之前就对主要制备活动进行了讨论，以及获得的初步结果。
The 4m International Liquid Mirror Telescope (ILMT) is a zenith-pointing optical observing facility at ARIES Devasthal observatory (Uttarakhand, India). The first light preparatory activities of the ILMT were accomplished in April 2022 followed by on-sky tests that were carried out at the beginning of May 2022. This telescope will perform a multi-band optical (SDSS $g'$, $r'$ and $i'$) imaging of a narrow strip (~$22'$) of sky utilizing the time-delayed integration technique. Single-scan ILMT images have an integration time of 102 sec and consecutive-night images can be co-added to further improve the signal-to-noise ratio. An image subtraction technique will also be applied to the nightly recorded observations in order to detect transients, objects exhibiting variations in flux or position. Presently, the facility is in the commissioning phase and regular operation will commence in October 2022, after the monsoon. This paper presents a discussion of the main preparation activities before first light, along with preliminary results obtained.
