Question: Preferred slit size?

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asnow asked on January 23, 2018 16:46
235 | 1 answers | #15590


What size or sizes of collam slits do you prefer to work with? Why?



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We currently sell this pack: https://publiclab.myshopify.com/collections/spectrometry/products/acetate-slit-bundle

With 0.09mm, 0.12mm. 0.15mm, and 0.18mm slits. But we're not sure the exact reasoning behind these sizes except that they're 0.03mm apart. Would people like different sizes? Would people be upset if we simplified and started making only 0.1 and 0.2mm slits?

What do you use these for and why?

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Some good notes on this over the years:

And the original post on slits here: https://publiclab.org/notes/mathew/09-25-2013/photo-printed-collimation-slit-for-the-backpack-spectrometer -- @mathew writes:

In the balance between accurate spectra and light sensitivity, the .09mm slit seems to be the best. Its spectral peaks were just as pointy and clear as at .03mm but it produced brighter spectra, without the cutoff and internal reflections that began to be an issue at .12mm.

I believe this is the 2016 full PDF we printed from -- i did a new layout more recently that was just for one size, but this is the full-sized sheet:

full_sheet_grid_labeled-new.pdf


And here are the ones we've reformatted for efficient printing at letter size! spectrometer-slits-letter-0.18.pdf

spectrometer-slits-letter-0.18.svg



Thank you @warren !


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