[3dem] Pre-multiplied CTF option in Relion

[Takanori Nakane]

Hi,

It should work in 3.1.0.

Apply it in Polishing with --ctf_premultiply and --crop.
See https://urldefense.com/v3/__https://www.jiscmail.ac.uk/cgi-bin/wa-jisc.exe?A2=ind1912&L=CCPEM&O=D&P=42487__;!!Mih3wA!StZGac4eSCCvJReP9WnDgop6znVaGeGORR_tIcejXQKHpa2Man3cCLNDD7r9VmdySg$  for details.

Also note that there are several limitations.
https://urldefense.com/v3/__https://www.jiscmail.ac.uk/cgi-bin/wa-jisc.exe?A2=ind2008&L=CCPEM&O=D&P=103727__;!!Mih3wA!StZGac4eSCCvJReP9WnDgop6znVaGeGORR_tIcejXQKHpa2Man3cCLNDD7q5NFM2Zw$ 

Best regards,

Takanori Nakane

On 2020/09/02 1:40, Craig Yoshioka wrote:
> Hi all,
> 
> Does anyone have much experience with using pre-multiplied CTFs in Relion?  When I last tried it, it was not supported in the GPU branch, but I was interested in seeing if I could use it to get around CTF-aliasing and delocalization without using huge box sizes (with the assumption that the pre-multiplication occurs before particle windowing).
> 
> Cheers,
> -Craig
> 
> 
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