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EMBL_BM14pano.jpg
05-Oct-2005

EMBL_BM14pano.jpg


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Lensrentals05-Nov-2013 19:26
A truly "geeky" panorama. Taken in 2005 with a Canon EOS 300D and Sigma 8mm fisheye, in just three shots with the camera and lens tilted 30° off of vertical to allow for enough overlap to cover a full spherical image. Stitched by hand-picking matched details (this was 2005, you know) and blended with an experimental "multi-band" software through a command-line "interface."

The geeky subject room is a "hutch" on the European Synchrotron Radiation Facility particle accelerator ring in Grenoble, France. The ESRF is the most powerful synchrotron radiation source in Europe, with an X-ray brilliance of 8x10^20 photons/s/mm2/mr2/0.1%bw. The hutch is BM14, a bending magnet 14 beamline at the ESRF, optimised for exploiting anomalous scattering methods MAD/SAD in macromolecular structure determination. BM14 has an optical design suited to the rapid and accurate energy change between 7 and 17 kev, which covers most of the commonly used absorption edges of heavy atoms.

Of note to camera geeks is the large, grey MAR Research MX-225 CCD detector array (9 CCDs with tiled fiber optic taper elements) to capture the photon diffraction pattern when a portion of the beam is directed at a frozen crystal of purified protein. A very big sensor!
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