[ccp4bb] [Fwd: Re: [ccp4bb] question about redundancy]

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CCP4bb <-- 1999 <-- November 1999 <-- 30 November 1999

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Subject: Generate Random phase set.
From: David Briggs bassophile {- at -} GMAIL {- dot -} COM
Date: 2007-03-20

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Date: 2007-03-20

Subject: [Fwd: Re: question about redundancy]
From: Bart Hazes bart {- dot -} hazes {- at -} UALBERTA {- dot -} CA
Date: 2007-03-20

Hi Li, There is nothing wrong with your opinion the expected redundancy
is indeed 4 because, as you say, each reflection intersects the Ewald
sphere twice, once through the top and once through the bottom
(redundancy will actually be a bit less due to the missing cusp region).

Bart

yang li wrote:
> Hi:
> I am confused by a idea for a long time, and it maybe an easy question.
> That is, if a cryst with p1 spacegroup, after 360 degree data collection,
> what the redundancy should be? I was told that it is 2, and the 2 are
> F(h,k,l) and F(-h,-k,-l), but I think if the reciprocal lattice rotated 360
> degree, it must intersect with the ewald sphere 2 times--for example,
> go into the sphere and go out--then F(h,k,l) should be collected twice.
> I donnot know what is wrong with my option. Anyone can tell me the
> reason? Thanks!
>
> Li Yang
>
>

--

==============================================================================

Bart Hazes (Assistant Professor)
Dept. of Medical Microbiology & Immunology
University of Alberta
1-15 Medical Sciences Building
Edmonton, Alberta
Canada, T6G 2H7
phone: 1-780-492-0042
fax: 1-780-492-7521

==============================================================================

--

==============================================================================

Bart Hazes (Assistant Professor)
Dept. of Medical Microbiology & Immunology
University of Alberta
1-15 Medical Sciences Building
Edmonton, Alberta
Canada, T6G 2H7
phone: 1-780-492-0042
fax: 1-780-492-7521

==============================================================================

CCP4bb navigation

CCP4bb <-- 1999 <-- November 1999 <-- 30 November 1999

Previous message:
Subject: Generate Random phase set.
From: David Briggs bassophile {- at -} GMAIL {- dot -} COM
Date: 2007-03-20

Next message:
Subject: Re: A bit of history: John W Backus obit
From: Bart Hazes bart {- dot -} hazes {- at -} UALBERTA {- dot -} CA
Date: 2007-03-20