Okay, show me a screenshot or video then. I don't care for mathhammer.
I'm not somewhere I can actually get a screenshot or anything, but later tonight I'm sure Geo would be happy to jump in practice with me and set up a screenshot. It's basic trig. 1100*tan(10). Draw a triangle. The farther away your target, the higher they can be in relation to you. At small angles like this, there is a fairly linear relationship between angle and max height achievable. So if we were to halve the max angle of the artemis, it would only be able to hit about 100 meters above itself in our example situation. If a ship could achieve an upwards angle of 10' and an artemis works the same way it currently does, the max height would be around 400m.
Keep in mind that putting lesmok in an artemis makes its range absurdly long. So the 1100 meter distant example Geo gave would be on the close end, where using burst is probably still a viable option (i think... I don't know specific ranges).
-edit- I was going to complain about Dunes, but it doesn't belong here, so I removed it.