| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| BettyeGagner | "The differential reflection in the red and infrared (IR) bands enables you to monitor density and intensity of green vegetation growth using the sp..." | Read more » | over 5 years ago | |||
| warren | "Also see this page collecting cheap cameras of this type: https://publiclab.org/questions/warren/05-20-2017/cheap-lightweight-gopro-alternatives-fo..." | Read more » | almost 6 years ago | |||
| warren | "These or similar cameras are as low as $40 now! https://www.amazon.com/gp/aw/d/B01DG9UMS6/ref=mp_s_a_1_2?ie=UTF8&qid=1497436247&sr=8-2&..." | Read more » | almost 6 years ago | |||
| dbehr | "Thx. @cfastie " | Read more » | about 6 years ago | |||
| cfastie | "Trying slightly different values could yield better results in some situations. CLF_SYSCFG.TXT " | Read more » | about 6 years ago | |||
| dbehr | "Hi, I have Mobius Infragarm cam for NDVI. I can't locate the White Balance settings for the mSetup program. Can you pls. give the values or a link..." | Read more » | about 6 years ago | |||
| suman | "i want to buy DYI plant health analyzer filter......i tried to buy from public labs but it's already out of stock. How can i possibly buy it for in..." | Read more » | over 6 years ago | |||
| azaelb | "Thanks warren, I got these cameras from Amazon, vendor digital_family, product ASIN B01FLVPZNY. It is now under $60. On pictures I just had some pi..." | Read more » | over 6 years ago | |||
| warren | "Also do you have any pics you took with the camera to share? Raw and NDVI for comparison? Thank you!!! " | Read more » | over 6 years ago | |||
| warren | "Wow, amazing -- do you have a link to where you can buy this camera, and any data on how much it weighs? It could be a great alternative for people..." | Read more » | over 6 years ago | |||
| Matej | "Cool! Thanks Jeff! This is helpful. " | Read more » | almost 7 years ago | |||
| warren | "What I did to compare is to calibrate on a CFL, then scan a tube fluorescent, so that the methodology for calibration is the same: https://spectra..." | Read more » | almost 7 years ago | |||
| Matej | "Interesting. I actually did kind of an "educated guess" calibration but I couldn't find more but one blue peak. I know that in the "usual" CFL ther..." | Read more » | almost 7 years ago | |||
| warren | "Actually this looks calibrated, no? " | Read more » | almost 7 years ago | |||
| Matej | "@warren: in response to: "Can you try re-calibrating this one, as I think it was calibrated during a brief bug (it shows being calibrated on 1/26/1..." | Read more » | almost 7 years ago | |||
| Matej | "@ethanbass for calibration I am not smoothing the spectra. I just thought it could be helpful when comparing them and adding them to a set. " | Read more » | about 7 years ago | |||
| Matej | "Hi Jeff, Thanks for the info about the bug! I Will recalibrate right away. I discussed with Gretchen and I think I will keep using this bulb since ..." | Read more » | about 7 years ago | |||
| dhaffnersr | "Hey Jeff, your right I just thought about it, it will calibrate, it's just you can't get a good fit. " | Read more » | about 7 years ago | |||
| warren | "that continuous band on the blue spectrum gives poor calibration Dave, I don't think it's quite accurate to say that they give poor calibration. T..." | Read more » | about 7 years ago | |||
| warren | "Can you try re-calibrating this one, as I think it was calibrated during a brief bug (it shows being calibrated on 1/26/16) which was since fixed. ..." | Read more » | about 7 years ago | |||
| warren | "Hi, Matej - it also looks like some of your spectra are not calibrated, or perhaps not properly? I'm seeing some not aligned. But all of them seem..." | Read more » | about 7 years ago | |||
| dhaffnersr | "Hello Matej! Those "humps" that you are getting from the daylight bulbs are the very reason I don't use them, that continuous band on the blue spec..." | Read more » | about 7 years ago | |||
| ethanbass | " " | Read more » | about 7 years ago | |||
| ethanbass | "Hey Matej, there's something going wrong with the way your second and third sets are showing up there! They've got all of those squiggles showing u..." | Read more » | about 7 years ago |