Observing exoplanets in the near-infrared from a high altitude balloon platform - Nagler, PC; Edwards, B; Kilpatrick, B; Lewis, NK; Maxted, P; Barth Netterfield, C; Parmentier, V; Pascale, E; Sarkar, S; Tucker, GS; Waldmann, I (Journal of Astronomical Instrumentation, 2019)