  We present the analysis of the hot-Jupiter KELT-7b using transmission and
emission spectroscopy from the Hubble Space Telescope (HST), both taken with
the Wide Field Camera 3 (WFC3). Our study uncovers a rich transmission spectrum
which is consistent with a cloud-free atmosphere and suggests the presence of
H2O and H-. In contrast, the extracted emission spectrum does not contain
strong absorption features and, although it is not consistent with a simple
blackbody, it can be explained by a varying temperature-pressure profile,
collision induced absorption (CIA) and H-. KELT-7 b had also been studied with
other space-based instruments and we explore the effects of introducing these
additional datasets. Further observations with Hubble, or the next generation
of space-based telescopes, are needed to allow for the optical opacity source
in transmission to be confirmed and for molecular features to be disentangled
in emission.
