Left and Right IR images from ros_astra_camera package? Asking for the stereo calibration


I am using Astra Stereo U3 Camera. I am trying to do stereo calibration therefore I need left and right IR images. I noticed that the ROS package only publishes one of the IR images. So is there a solution to obtain both of them together (as different ROS topics)?

Any help would be very grateful. Thanks in advance.