I would put these 8x40 Ultra Wide View's in the category of unusable for night viewing. The stars distort to the point that they look like big blobs.

As mentioned, I have a pair of 10x50 Actions (6.5 degrees) and they are fine.

I'm now looking at:

Nikon 7x35 Action Extreme ATB Binoculars (9.3 degress)

or

Pentax 8x40 PCF WP II Binoculars