Comments

Author Comment Last activity Moderation
WhiteRabbit "Per request, I just now changed the title to something more descriptive. Thanks for your post, Chris. " | Read more » about 6 years ago
WhiteRabbit "For example, one of the differences, as noted in the comment posted in http://publiclab.org/notes/WhiteRabbit/07-27-2014/question-can-i-use-the-des..." | Read more » over 6 years ago
WhiteRabbit "This isn't my field, but I'll try to frame the question more precisely. For any given wavelength in the plot, there's a magnitude representing its..." | Read more » over 6 years ago
WhiteRabbit "Thanks for the links! Epilog: after pricing out individual filters for doing a filter wheel, I don't think I could beat the price of this one pixe..." | Read more » over 6 years ago
WhiteRabbit "I found this: http://www.vernier.com/products/sensors/col-bta/ which is interesting because unlike other low-cost spectrometers/colorimeters its s..." | Read more » over 6 years ago
WhiteRabbit "Note sure, but it seems vaguely similar to this: http://cfnewsads.thomasnet.com/images/large/553/553184.jpg except theirs appears to use filters i..." | Read more » over 6 years ago
WhiteRabbit "Great post, and great comments too. Very informative! Thanks. " | Read more » over 6 years ago
WhiteRabbit "Would acetone or some other solvent dissolve the glue holding on the IR blocker so that it can be removed without shattering it? Is it known what ..." | Read more » over 6 years ago
WhiteRabbit "Ned, Thanks very much for posting this research note. I found it to be helpful background for a related topic (http://publiclab.org/notes/WhiteRa..." | Read more » over 6 years ago
WhiteRabbit "Interesting results! " | Read more » over 6 years ago
WhiteRabbit "Thank you for the very nice write-up. FWIW, it might be that you can get light in a narrower bandwidth from a point source than from an LED: http..." | Read more » over 6 years ago
WhiteRabbit "Here's a write-up that I'm finding quite helpful: http://publiclab.org/notes/nedhorning/11-01-2013/why-a-red-filter-should-work-well-for-ndvi Eyeb..." | Read more » over 6 years ago
WhiteRabbit "Sounds like gel filters would be tricky at best, so I guess ixnay to that. How about this one? http://www.ebay.com/itm/Optical-Interference-Filter..." | Read more » over 6 years ago
WhiteRabbit "Cool! Awesome post. I suppose it's wishful (and probably foolish) thinking, but given the the low price of a filter swatch book and the seemingly..." | Read more » over 6 years ago
WhiteRabbit "Thanks for the post. Anyone here tried the pinwheel approach? " | Read more » over 6 years ago
WhiteRabbit "Hi Matthew, Thanks! Have you found any additional filter wheels worth considering since making your post? http://publiclab.org/notes/WhiteRabbit..." | Read more » over 6 years ago
WhiteRabbit "Thanks, Chris, for your thoughtful and very informative post. If I'm reading it right, perhaps using two monochrome cameras, each with the appropr..." | Read more » over 6 years ago
WhiteRabbit "Also, FWIW, not all stainless steels are the same. For instance, 316 SS is more resistant to corrosion than 304. " | Read more » over 6 years ago
WhiteRabbit "" I can try different filters to learn how to make the best plant health images." Which filters have you found that make the best plant health ima..." | Read more » over 6 years ago
WhiteRabbit "So, is it working properly, or is it not? The sample NDVI photos look nice.... " | Read more » over 6 years ago
WhiteRabbit "Great post. It's also worth mentioning how temperature might affect water conductivity measurements: see comment under http://publiclab.org/notes..." | Read more » over 6 years ago
WhiteRabbit "Be mindful how temperature may affect your saline conductivity measurements, as I tried to point out in the comments here: http://publiclab.org/not..." | Read more » over 6 years ago
WhiteRabbit "Interestingly enough, I did just now find this $889 turf grass color meter which does, indeed, use NDVI! http://www.specmeters.com/nutrient-manage..." | Read more » over 6 years ago
WhiteRabbit "How are you finding NVDI to be a helpful way to look at your plants? " | Read more » over 6 years ago