answered an SMP question

Answered a question on FoFoAstro's channel on Stellarium Mobile Plus. Someone wanted to know how to set the camera width and height. I explained: Access the menu, tap Instruments, tap Oculars, enable the feature, go to the Shape menu and choose Camera, get set the width and height and rotation with the sliders. I'm assuming your know your camera frame size in angular measure for your optical train.