(faster shutter speed / less light). Aperture (or f-stop) refers to the size of the opening in the lens of the camera when a picture is taken. As you are focusing the camera, the lens is wide open with the largest aperture supported by your lens.
The harvest season typically falls between August & October in the Northern Hemisphere and February & April in the Southern Hemisphere. With various climate conditions, grape varieties, and wine styles the harvesting of grapes could happen in every month of the calendar year somewhere in the world. In the New World it is often referred to as the crush.
This means that the best time when to harvest squash of this variety is at the very end of the growing season, right around the time of first frost. If by chance your vine is damaged by pests or weather that forces you to harvest early, other indicators of a winter squash that is ready to pick is to tap on it gently.