Effectof glare (straylight) from the sunlit part of the Moon on the observations. Left image: obtained during lunar phase 0.14, while the right: at 0.44. The contrast of the images is set to a value that allows for the lunar surface to be clearly visible. The illuminated part on the left edge of both images is not saturated, but it has the highest background values. It should be noted that the terminator is far away from the edges. In the left image, many lunar features can be easily seen. In the right image, the features are very blurred and the total covered area is decreased about ~ 30% with respectto the left one.