The HiRISE focal plane projected onto Heimdall Crater
![The HiRISE focal plane projected onto Heimdall Crater](https://planetary.s3.amazonaws.com/web/assets/pictures/_1200x441_crop_center-center_82_line/21246/20140201_HiRISE_Phoenix_Focal_Plane_Imaging-3.jpg 1200w, https://planetary.s3.amazonaws.com/web/assets/pictures/_768x282_crop_center-center_60_line/21246/20140201_HiRISE_Phoenix_Focal_Plane_Imaging-3.jpg 768w, https://planetary.s3.amazonaws.com/web/assets/pictures/_576x212_crop_center-center_60_line/21246/20140201_HiRISE_Phoenix_Focal_Plane_Imaging-3.jpg 576w)
Key: Black rectangles show approximate locations of HiRISE chip assembly active areas overlaid onto a photo of the central group of six chips. Purple lines show where the angle of the ground image travel across the focal plane causes a gap in the overlap for the red (monochromatic) channel. Red lines show where the angle of the ground image travel across the focal plane causes a larger than normal overlap for the red channel. Green lines indicate the boundaries within which color data is available, where portions of image swaths reach all three color channels.