Alfredo,

It's not clear from your email what your purpose is: to illuminate a crystal/sample on a microscope stage or on a goniostat. In either case, you might check out Ocean Optics (http:// www.oceanoptics.com/). They have based their systems on fiber optic light sources and CCD detection. One point in their favor is that they are relatively cheap and portable. The company was started by people who needed small and portable spectrophotometers/monitors for oceanographic field research. We use their spectrophotometers in our teaching labs as their footprint (light source and detector) is now smaller than a small laptop, but they have about a 10-20 millisecond readout across 220-800 nm.

Cheers,

Michael

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R. Michael Garavito, Ph.D.
Professor of Biochemistry & Molecular Biology
513 Biochemistry Bldg.
Michigan State University
East Lansing, MI 48824-1319
Office:  (517) 355-9724     Lab:  (517) 353-9125
FAX:  (517) 353-9334        Email:  [EMAIL PROTECTED]
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On May 14, 2008, at 8:59 PM, Torres-Larios Alfredo wrote:

Dear all,

Here's another non CCP4 question: does anyone know a cheap alternative to set up a UV source at 280 nm? I'd really like to have one :), but I really don't have the $20K Dlls needed to buy a UV/white light source from the crystallographic vendors :(.

Thanks so much in advance for your answers, Alfredo.

Alfredo Torres-Larios, PhD
Assistant Professor
Instituto de Fisiologia Celular, UNAM.
Ciudad Universitaria, Mexico

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