natashabatalha/PandExo: Release 2.0

Merge to incorporate Pandeia 2.0.

This is a major update that should be done before submitting Cycle 2 JWST proposals. The figure shows expected differences in group number calculations and precision updates.

Considerations for Cycle 2 Planning:

The discussion in Espinoza et al. 2022, Section 4.1, details how PandExo currently compares against available data (HAT-P-14 b). For the case of HAT-P-14b, which has a high-impact parameter, PandExo is currently producing error bars that are roughly 20% better than expected. This error comes from PandExo's assumption of a flat-bottomed transit, opposed to a limb-darkened star. This effect, which is planet-system dependent, will be incorporated in Release 3.0, and will not be available for Cycle 2. Therefore, users should consider the system's impact parameter when determining the number of transits required to obtain a desired precision.

With regards to the group number, no additional adjustments need to be made. For suggestions on what saturation fullwell to use for each instrument, please refer to JDox (see general recommendations).

Major installation changes:

• Updated pandeia requires the download of throughput files. These new instructions have been added to the installation docs: https://natashabatalha.github.io/PandExo/installation.html