Particle CTF outputs are required to run 2DCA even if “Do CTF correction” is turned off. Seems like particles should be able to be imported with a constant CTF, and/or if CTF correction is off the missing info shouldn’t block the job.
I think I can create a dummy micrograph, import it with a constant CTF, reassociate the no-CTF particles to that mic, and then re-extract CTF values, in order to get constant CTF particles, but that’s very hacky.
Hey @DanielAsarnow, thank you for reporting this! I think both your suggestions make sense - importing particles with a constant CTF, and making the CTF field optional for 2D class if CTF correction is turned off. We’ll release these changes in a future update.
