在椭圆星系中，比E7型更扁的并开始出现旋涡特征的星系，被称为透镜星系。
在图中还有其他背景性的透镜星系，而天文学家正是通过它们计算出了146 - IG的质量。
There are other lensed background galaxies in the image as well, and the astronomers used those to get the mass of 146-ig.
它没有多少可见尘埃，表明是个低尘埃透镜星系，但也有可能当从上往下看时会发现螺旋状的结构。
Its lack of a visible dust lane indicates that it is a low-dust lenticular galaxy, although it is still possible that a view from on top would reveal spiral structure.
此外，该图像部分的透镜星系出现红色-大的距离，这些星系的红移介绍，轮班其光红色部分频谱。
In addition the images of some of the lensed galaxies appear red - the large distance to these galaxies introduce redshift, which shifts their light to the red part of the spectrum.
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