The following website may help. It claims that it can be seen with a 6" scope, but high magnification (300x) is needed.
https://observing.skyhound.com/archi.../NGC_1999.html
NGC 1999 is an interesting object with its empty space within a nebula, that is surrounded by brighter part of the nebula. Curious!
https://en.wikipedia.org/wiki/NGC_1999