[ccp4bb] Stereo Microscope:

2014-08-20 Thread jens j birktoft
Hi: I would be grateful for suggestion regarding stereo microscopes suitable for protein/dna crystal viewing and manipulation. We would need a system that fulfull all of the criteria: 1) Two polarizers one for below the sample holder and one above 2) A fully rotatable stage 3) A camera option,

Re: [ccp4bb] Stereo Microscope

2012-07-19 Thread Sampson, Jared
Our setup is an Olympus SZX-10 with both 1x and 2x objectives and 10x eyepieces. It's nice having the different objectives for different things--a close up look at a tiny crystal requires the 2x, but the 1x is less bulky and has better depth-of-field, so it's better for freezing crystals. The

[ccp4bb] Stereo Microscope

2012-07-18 Thread PRASENJIT BHAUMIK
Hello, I am planning to purchase a stereo microscope for visualizing crystallization drops. I would be very grateful if someone let me know the “objective” and “binocular eyepiece” specifications for SZX-7 or SZ-61 (Olympus) to get good magnification.   Thank you.   Regards,   Prasenjit

Re: [ccp4bb] Stereo Microscope

2012-07-18 Thread Roger Rowlett
We have an Olympus SZX-12 microscope and are running a 1X objective (with polarizer) and a 10 X eyepiece. The scope will zoom from approximately 10X-90X magnification. At 90X a 400 nL drop in a 96-well plate will nearly fill the field. Cheers, ___ Roger S.

Re: [ccp4bb] Stereo Microscope advice

2011-01-24 Thread Sampson, Jared
Hi Kevin - 1) I can only imagine that LEDs would produce vastly less heat than halogen lamps. In general, they are small, efficient, long-lasting and don't produce a lot of heat. Here's a start for more information http://en.wikipedia.org/wiki/Light-emitting_diode . Also, a quick search got

Re: [ccp4bb] Stereo Microscope advice

2011-01-24 Thread Andrew T. Torelli
-Original Message- From: CCP4 bulletin board [mailto:CCP4BB@JISCMAIL.AC.UK] On Behalf Of Kevin Corbett Sent: Sunday, January 23, 2011 8:35 PM To: CCP4BB@JISCMAIL.AC.UK Subject: [ccp4bb] Stereo Microscope advice Hi everyone, I'm looking to buy a new stereo microscope for looking

Re: [ccp4bb] Stereo Microscope advice

2011-01-24 Thread Adrian Goldman
Just one comment on LEDs as we have them as part of an imaging system. While it is true that the LEDs themselves emit cool light, the associated electronics is hotter than I would have expected. FYI. Adrian Sent from my iPhone On 24 Jan 2011, at 19:24, Sampson, Jared jared.samp...@nyumc.org

Re: [ccp4bb] Stereo Microscope advice

2011-01-24 Thread Artem Evdokimov
'White' LED light produced by most integrated white LED packages is in fact a mixture of blue (~460nm), produced by the LED itself and a broad-band yellow (560nm), produced by a secondary phosphor, typically directly coating the semiconductor that emits the primary light. The net effect is a

[ccp4bb] Stereo Microscope advice

2011-01-23 Thread Kevin Corbett
Hi everyone, I'm looking to buy a new stereo microscope for looking at crystal trays, and was wondering if anyone could help me answer a few questions: 1) Does anyone have experience with LED illumination in the microscope base? I'm worried that there might be excessive heating of the