Recommendation

Any thoughts on a rifle scope for either a .22 or a 9mm carbine? I would need something that would be useful out to 150 yards in low to very low light.

Since you're asking in the Night Vision section I'll answer with NV products. I like the US Night Vision D 141 and the ATN Mk 390. For very small game, though, you're asking too much of an entry level scope at any distance approaching 100 yards. Coyotes are a medium size target, and with a full moon and perfect conditions you should have a reasonable shot at 100 yards or a bit further. Night vision is made to see in the dark, not see far in the dark.