2.1 magnification is not going to serve you very well for star gazing. That sort of power is more suitable for opera glasses. While the wide field of view, FOV at 25 degrees may seem nice, it might also make you dizzy!
FOV is often defined by what the total horizontal view, in meters, is at 1000 meters distance. In general, the more magnification power, the less field of view you get. For star gazing you want higher magnification than 2.1, and you really do not need a 25 deg field of view. (and won't get it)
For just gazing, I think you want at least 6x magnification but less than 10. At 10x things can get shaky.
Incidentally, to get the FOV in degrees, take the arctan of [(FOV in meters @ 1000 meters distance) divided by 1000]
*Here is a site that has a lot of information about binocular optics and may help you to make a good choice. There may also be some good deals here if you are interested.
I use a pair of military issue Barska on my ship. But, when I want to actually see what I am looking at, I break out the high end Zeiss.
*(This isn’t spam! Just some information that may be useful!)
Edited by OceanBreeze, 10 April 2019 - 11:55 AM.