[DIYman (Doug)]

I am looking at mono astro cameras and have become aware of under and over sampling issues. Getting a camera that has the correct pixel size (9um) for the focal length of my scope is proving difficult (2250mm). A problem is the trend to smaller pixels (<5um) which I suppose reflects the current market which is based on the small sized imaging scopes used extensively. I guess one solution is one of these camera and then simply bin 2x2. Apart from loss of resolution, are there any other downsides I should be aware of?