Hajime Kawahara

Using `treeverse` for the computation of each layer might alleviate the memory-time tradeoff problem, so this will be investigated. It seems that `equinox` has implemented a `scan` with checkpointing functionality....

[opart] the aliasing artifacts in `opart` (EmisPure) are more sensitive to the resolution than that in `opa` + `art`

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|R | 20000 | 40000 | 80000 | | ---- | ---- | ---- | ---- | |`opa`+`art` | | |  | | `opart` |  | | ...

The main methods in `atm` are currently `.run()`. But should we directly call the main method? Note that in any case we will keep `.run()` as an alias.

We would try to add the capability of an emulator-based opacity calculator, developing as [ExoEmulator](https://github.com/HajimeKawahara/exoemulator). Very experimental.

We do not yet have the rotation kernel for (high-res) transmission spectrum.

opa for Atomic database

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The `opa` class (in particular `OpaDirect`) is not yet compatible with atomic databases `adb`. This involves complex issues, so it is undecided whether it will be included in the `ExoJAX2`...