Community research

Endure1 commented on an answer about What is the algorithm used in generating the fastie colormap from NDVI in Infragram? about 3 years ago

Is this conversion the reason a dual camera setup doesn't necessarily require calibration?

Endure1 commented on Multispectral raspberry pi: first light (NDVI images) about 3 years ago

The Raspberry Pi v2 camera uses a Sony IMX219 sensor. Here is the spectral response of the sensor...

dcanprdn commented on Assembling the Public Lab Lego Spectrometer about 3 years ago

I just got a lego spectrophotomer "kit" a bag of some lego pieces, a slit, and a CD. Directions...

kgradow1 commented on an answer about Where can microscope lenses (objectives) be bought? about 3 years ago

The cost of all of them actually vary a lot. We took a 40x apart at the barnraising and realized...

stevie commented on an answer about Where can microscope lenses (objectives) be bought? about 3 years ago

hmm maybe we could get 1 or 2 10xes. Any idea why the cost on the 10x ones here vary so much? htt...

Bronwen commented on an answer about Can you use rubbing alcohol or nail polish remover for prepping copper for Hydrogen Sulfide test? about 3 years ago

I think you have to aim to be in a well ventilated area for pads too: pouring acetone might not b...

kgradow1 commented on an answer about Where can microscope lenses (objectives) be bought? about 3 years ago

I'd love to work through a build at 4x or 10x, which should a much simpler in terms of onboarding...

stevie commented on an answer about Where can microscope lenses (objectives) be bought? about 3 years ago

ok great! we'll start with the 40x thanks!

Supun commented on Software project ideas for upcoming 2018 Summer of Code fellowships? about 3 years ago

I also would like to apply as a mentor.

kgradow1 commented on an answer about Where can microscope lenses (objectives) be bought? about 3 years ago

Do you mean which magnification? Either 40x or 100x are good. I think the 40x is slightly easi...

stevie commented on an answer about Where can microscope lenses (objectives) be bought? about 3 years ago

Hi @kgradow1 wondering which lens you would recommend for a starter kit for imaging some of the P...

kgradow1 commented on Where can microscope lenses (objectives) be bought? about 3 years ago

40x for $22: http://www.amscope.com/40x-achromatic-microscope-objective.html 100x for $31: http...

warren commented on What's the best setup for a copper rod or copper plate test for DIY hydrogen sulfide detection? about 3 years ago

Just wanted to link over to this discussion of copper "badges": https://publiclab.org/questions/w...

warren commented on an answer about Can you use rubbing alcohol or nail polish remover for prepping copper for Hydrogen Sulfide test? about 3 years ago

Copying in that discussion here, as it belongs here more appropriately: Also thinking of making ...

warren commented on What are some options for copper materials to make a copper plate test kit? about 3 years ago

I was looking for some pre-cut smaller pieces of copper in standard sizes, in part to avoid the w...

warren commented on Copper Sheet Hydrogen Sulfide Detection Activity about 3 years ago

And do you have to discard the sandpaper on each use, or can it be used over and over? Thanks!

warren commented on Copper Sheet Hydrogen Sulfide Detection Activity about 3 years ago

Hi, i saw you mentioned: it’s almost more like a polisher regarding the sandpaper -- was that a...

warren commented on Can you use rubbing alcohol or nail polish remover for prepping copper for Hydrogen Sulfide test? about 3 years ago

Just a note that we'd looked at some single-use acetone nail polish removing pads, because peop...

warren commented on an answer about Can you use rubbing alcohol or nail polish remover for prepping copper for Hydrogen Sulfide test? about 3 years ago

Hi, @gretchengerhke - would acetone melt nitrile or latex gloves? I'm thinking of how to ship som...

warren commented on Quick Build: Basic Microscope Kit with Raspberry Pi about 3 years ago

Awesome. Trying to get a bunch of the parts and prices together here: https://publiclab.org/quest...

partsandcrafts commented on Quick Build: Basic Microscope Kit with Raspberry Pi about 3 years ago

@warren @kgradow1 -- we also tried using one of these lights -- https://www.amazon.com/Cat-CT1000...

mridulnagpal commented on an answer about Software project ideas for upcoming 2018 Summer of Code fellowships? about 3 years ago

Sounds awesome!! Will prepare a research note on it right away!!

liz commented on an answer about Need your feedback on Tag pages about 3 years ago

thank you so much for this @julvie , i've started reading your great write-up and am excited to b...

jdburnett commented on Improved DIY NIR camera calibration about 3 years ago

Ned's last comment reminded me of something I found with our equipment a few years ago. My lab ha...

jdburnett commented on Improved DIY NIR camera calibration about 3 years ago

@dannysmith I will second Ned's thoughts. I assume you are using raw image format out of your cam...

julvie commented on Need your feedback on Tag pages about 3 years ago

Hi Everyone, Here is a preliminary review of the site and also some questions to better understa...

nedhorning commented on Improved DIY NIR camera calibration about 3 years ago

Hi dannysmith - I’m glad to hear the note was useful to get you started. I find it helpful to plo...

dannysmith commented on Improved DIY NIR camera calibration about 3 years ago

@nedhorning thank you so kindly for all of your work, the detail you have put into it has been a ...

xose commented on Convocatoria GAIMeC about 3 years ago

You're free to do it @liz but sessions will be held in spanish ;)

amirberAgain commented on Python and openCV to analyze microscope slide images of airborne particles about 3 years ago

For now, my code and iamge excerpt can be found here, just untill I figure out how to have two gi...