| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| 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 9 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 9 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 9 years ago | |||
| WhiteRabbit | "Interesting results! " | Read more » | over 9 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 9 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 9 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 9 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 9 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 9 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 9 years ago | |||
| WhiteRabbit | "So, is it working properly, or is it not? The sample NDVI photos look nice.... " | Read more » | over 9 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 9 years ago | |||
| WhiteRabbit | "Thanks for the links. Supposedly grass also changes color as the soil loses moisture (IIRC, it becomes less green and more blueish?), and people c..." | Read more » | over 9 years ago |