2) Ensure that the camera orientation is the same.
But should be taken at the same ISO of the light frames. Taking Flat Frames with a CCD Camer Flat frames are not used to suppress digital noise in your images, thus they are not temperature-dependent. You may need to construct a homemade flat panel for your camera lens, that has added weight around the edges. ¡Mejor Precio Garantizado! Reserva The Frames, Renmark Point your camera lens straight up, 90 degrees, and make sure that the material you use is heavy enough to lay flat on the objective of your camera lens.