`CTFEstimator` Default Values

[chris-langfield]

Can we replace some of the input parameters to estimate_ctf() with sensible defaults?

[chris-langfield]

Maybe adopt defaults from

https://github.com/ComputationalCryoEM/ASPIRE-Python/blob/master/src/aspire/commands/estimate_ctf.py

[chris-langfield]

This will be closed by #623 and the issue is settled: we are using those defaults. Closing to declutter issues page