Re: [ccp4bb] X-rays gas scattering picture needed

2013-08-09 Thread James Holton
I put some pictures of scattering from random things (including "air") here: http://bl831.als.lbl.gov/~jamesh/pickup/images/ It is actually more difficult than you might think to get a clean image of "air scatter" on a well-maintained camera. This is because we usually try to minimize the contr

Re: [ccp4bb] X-rays gas scattering picture needed

2013-08-01 Thread Tim Gruene
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Dear Pietro, would this not look like a frame from your home source with no crystal mounted - unless you do not have access to a source where you can quickly collect an exposure in the absence of a crystal, but from your email address I assume this is

[ccp4bb] X-rays gas scattering picture needed

2013-08-01 Thread Pietro Roversi
Dear all, together with two fellow crystallographers, I am writing a pamphlet to introduce schoolchildren to X-ray crystallography. For the introductory chapter, we would need a picture of X-rays scattered by air. Or by any gas for that matter. I have tried Google images without much luck. Can