2018年一份boyajian及众多合作者参与的报告The First Post-Kepler Brightness Dips of KIC 8462852。里面提到了经过大量长期观察,在KIC 8462852出现亮度下降时,他们观测到光的不同波长的阻挡情况是不一样的。尘埃对于不同波长光的过滤是不同的,但是大面积不透光固体则会把所有波长挡住。
our data are inconsistent with dipmodels that invoke optically thick material, but rather they are in-line with predictions for an occulter consistingprimarily of ordinary dust, where much of the material must be optically thin with a size scale <=1 μm, and mayalso be consistent with models invoking variations intrinsic to the stellar photosphere.出自The First Post-Kepler Brightness Dips of KIC 8462852中的摘要的一部分。明确说了观测数据与不透光材料的假设不一致。数据与尘埃假说一直且透光材料大小规模小于等于1微米,并且数据也许与恒星光球的固有变化相一致。头发丝大约几十微米,戴森云的每个单元需要比头发丝还小吗?