I have and old iPad Air 1st gen.
When I tap on SkyAtlas the alert shows up with information Current device doesn't have enough RAM to run SkyAtlas.
UI/UX Suggestion: instead of showing SkyAtlas button
1: one could create a condition if there's no enough RAM, don't show the button
or
2: create a switch somewhere in settings pane, to enable/disable SkyAtlas button and when not enough RAM, the switch could be grayed out
This way we could benefit from a bit larger space at the bottom for wider histogram.