Nice entry level nvd - Armasight Spark G CORE IIT Night Vision Goggle

I placed my order for the Spark G IIT goggle. Within days the product was shipped. Upon receipt I studied the user manual until darkness fell. I feel it is very necessary to well acquaint myself self to this unit as I am a first timer in the night vision world. Fortunately this device has only 2 knobs to use for distance and definition. I am able to make out images up to approximately 100 yards but I am unable to distinguish any detail past 30 yards or so. I live in a very rural and isolated area in the State of Montana which has very little ambient light. There is more skyglow here than there was, say in the 1990's so that is a plus for night time viewing.
I am planning on ordering a long range illuminator for much needed distance that comes with the truly wide open spaces of North Central Montana. I use this for security reasons and in preparation for an unexpected crisis.