[Enhancement]: Allow starting S4-5 with non-Eureka inputs

[taylorbell57]

Instrument

Light curve fitting (Stages 4-6)

What is your suggestion?

As of right now, Stages 4+ require that users have started with Eureka!'s Stage 3, but ideally we would allow people to start at any stage (as they might want to use their own optimal extraction for example). The main issue stopping that right now is the requirement for the previous stage's meta save file which should be pretty easy to not require. Then we can work with someone like Zach Berta-Thompson at chromatic to implement a Eureka! writer so that users can reshape their outputs into the required format for Eureka!'s inputs.

Error traceback output

No response

What operating system are you using?

No response

What version of Python are you running?

No response

What Python packages do you have installed?

No response

Code of Conduct

• [X] I agree to follow this project's Code of Conduct

[taylorbell57]

Note that PR #603 partially resolved this enhancement request by supporting starting at Stage 4, but we still need to let users start at Stage 5. That should hopefully be a realtively simple extrapolation from Aarynn's PR