M45 Pleiades by ZWO Seestar 拍七姊妹星团
分类: 观测报告 Observations, 器材情报 Equipment
2023-12-11
Taken in Hong Kong 香港新界东+新界西拍摄
把早前3.5小时共1277张的M45七姊妹星团全部迭加，因为她在天上的位置是在正东方升起，好处是拍一两小时也不太受场旋影响，所以3.5小时曝光拍两晚便可以。不过Seestar最新软件版本的更新会有时追踪失灵，虽然可能照有一张有问题，但若仅用Seestar内置的迭加功能出图仍会废了整辑拍摄，要把所有单帧下载到电脑抽出有问题的一张，其余迭加才可以。
Take a total of 1277 images of the Pleiades (M45) star cluster, which were captured earlier, and stack them together. This is because its position in the sky is rising in the due east direction. The advantage is that even with a one or two-hour exposure, the effects of field rotation are minimal. Therefore, with a 3.5-hour exposure, it can be captured over two nights. However, the latest software update of Seestar may sometimes experience tracking failures. Although there may be a problematic frame, if the stacking function built into Seestar is used to generate the output, the entire set of shots will be wasted. To address this, all individual frames need to be downloaded to a computer and the problematic frame should be removed before stacking the rest of the images.
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