Reno, NV. cold and I have not used the telescope yet with my lens
The 23 mm eyepiece in this set seems to be pretty good. The 10 mm is OK. I haven’t tried the 4 mm. For the bargain price, the quality is better than I expected.
My instrument is a humble 50mm airspaced refractor, but my mission was important. To recreate the initial challenges and overcome them in an efficient progression of experiences, that would be enhanced by prior astronomy spanning larger instruments -leading to more discoveries possibly passed over in those more complicated times. So, these sweet little gems, which are half of the scope, but deliver most of the fun regardless of aperture, helped provide this new choreographed experience.