Bandpass filter kit and 10 position filter wheel

Posted by Shalin Mehta on
URL: http://confocal-microscopy-list.275.s1.nabble.com/Bandpass-filter-kit-and-10-position-filter-wheel-tp590971.html

Search the CONFOCAL archive at http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal Dear all,

 A labmate of mine is contemplating bandpass filter-set (25nm FWHM with center wavelengths of 450 to 675nm at intervals of 25 nm) for doing spectral unmixing.

To go with the filters he is looking for 10 position motorized wheel. Preferably the filters (and wheel adapters) should have 1" diameter, but smaller diameter is also usable. CVI does provide bandpass filters with 25nm FWHM but only at 50nm intervals (whereas we need 25nm interval). We are yet to hear about custom filters for in-between center wavelengths.

Are there any other off-the-shelf high transmission filter sets available from other vendors with said bandwidths?

For filter wheel, we got a quote from Ludl for 10 positions wheel of around 5.5K USD. Thorlabs is selling 6 position filter wheel at approx. 1K USD. But unfortunately they do not have 10 position wheels. Ludl filter wheels are switchable in 50ns whereas thorlabs' in 300ms. But he doesn't need real high speeds. Any other vendors of 10 position wheels that cost say, 1.5K?

Thanks for your suggestions.
Commercial responses are welcome off the list.

Regards,
Shalin



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My co-ordinates:
Shalin Mehta, Graduate student
Graduate Programme in Bioengineering, NUS, Singapore
Mobile: [phone]