Bruce Murray Space Image Library
Saturn with Tethys and Mimas' shadow
![Saturn with Tethys and Mimas' shadow](https://planetary.s3.amazonaws.com/web/assets/pictures/_768x768_crop_center-center_60_line/20140221_saturn-tethysps_1018.jpg 768w, https://planetary.s3.amazonaws.com/web/assets/pictures/_576x576_crop_center-center_60_line/20140221_saturn-tethysps_1018.jpg 576w)
I created two separate RGB images, one aligned on Saturn's limb and the other aligned on Tethys and Mimas' shadow. I then pasted the Tethys-Mimas layer on top of the first layer in Photoshop and used a Layer Mask to hide the second layer. Next, I used the Brush tool to erase part of the mask to reveal the aligned images of Tethys and Mimas' shadow.