Environmental conditions can hinder deep sky viewing. For example, light pollution in a city can make it difficult to see astronomical objects. So can a cloudy day in a remote field.
Additional factors for telescope viewing of deep sky objects can also be, aperture, magnification, and optical quality. A very high-powered telescope with poor optical quality (empty magnification) will not allow you to see objects well. Even if the manufacturer lists resolution as an indication of optical quality, the formula is only an estimate based on design, not an actual measurement of the manufactured telescope.
At Carson, to make sure the manufacturing resolution meets our standards, our telescopes undergo a double star resolution test at the end of every production. This means high quality optics that allow you to see deeper into the night’s sky.