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November 2021

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Subject:
Re: EXT: Measuring the absorbance spectrum of a lamp source
From:
"Model, Michael" <[log in to unmask]>
Reply To:
Confocal Microscopy List <[log in to unmask]>
Date:
Tue, 2 Nov 2021 16:24:37 +0000
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*****
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I have no personal experience but if you google "handheld spectrum analyzer UV", it gives you a few options

-----Original Message-----
From: Confocal Microscopy List <[log in to unmask]> On Behalf Of Craig Brideau
Sent: Tuesday, November 2, 2021 12:15 PM
To: [log in to unmask]
Subject: Re: EXT: Measuring the absorbance spectrum of a lamp source

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I think your choices are either a spectrometer or a monochromator with a power meter. If you have a power meter sensitive to 300-375 (not common
unfortunately) then a grating, slit, and a couple lenses will let you make a basic monochromator. You would need some way to calibrate the spectral range, such as a lamp with known spectral lines. It would be cheaper than a commercial spectrometer, but the results would probably be less precise and you would have to put quite a bit of time into building it. Variable filters may also be an option (these vary their pass band as they are
tilted) but they are expensive, especially in UV versions, to the point where a cheaper spectrometer would make more financial sense.

Craig

On Tue, Nov 2, 2021 at 10:10 AM Peter Favreau < [log in to unmask]> wrote:

> *****
> To join, leave or search the confocal microscopy listserv, go to:
> https://nam11.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists
> .umn.edu%2Fcgi-bin%2Fwa%3FA0%3Dconfocalmicroscopy&amp;data=04%7C01%7Cm
> model%40KENT.EDU%7C0aa77d39778a473f14f108d99e1c047a%7Ce5a06f4a1ec44d01
> 8f73e7dd15f26134%7C1%7C0%7C637714665439886312%7CUnknown%7CTWFpbGZsb3d8
> eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3
> 000&amp;sdata=uCFuUC1Mdk8ZgTuvww5rogV6STc7Jn6bkOOL9ApKdzY%3D&amp;reser
> ved=0 Post images on 
> https://nam11.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.imgur.com%2F&amp;data=04%7C01%7Cmmodel%40KENT.EDU%7C0aa77d39778a473f14f108d99e1c047a%7Ce5a06f4a1ec44d018f73e7dd15f26134%7C1%7C0%7C637714665439886312%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&amp;sdata=iDUME9aJ2MVLQQsNTiccfH7oria9MmAQUnVa9i6vWaU%3D&amp;reserved=0 and include the link in your posting.
> *****
>
> Hey Michael,
>
> Yes, I mean the emission spectrum (missed my coffee this morning). 
> Would a spectrometer be the only way to go then?
>
> Peter
>

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