Comments

Author Comment Last activity Moderation
cfastie "Scott, CHDK will provide a better intervalometer, but it can't sync the shutters without an external signal. So you need something to send a 5v pul..." | Read more » about 10 years ago
cfastie "That nice windows program for Mobius is not official, just written by the isoprop guy. I guess nobody has done it yet for the Mac. Here is the con..." | Read more » about 10 years ago
cfastie "Jeff, all of the photos that day were in bright sunshine under cloudless sky. You can see the afternoon progress in the four panel NDVI for Mobius ..." | Read more » about 10 years ago
cfastie "Scott, It doesn't look like you have any electronics for triggering the cameras. Do you have plans for syncing the shutters? If the synchrony is no..." | Read more » about 10 years ago
cfastie "You're right, that would be a revealing test. In the example you referred to (below), the red channel should be three times more sensitive than th..." | Read more » about 10 years ago
cfastie "Tom, Yes, meaningless was not the best word choice. The real surprise was that the non-plants consistently had NDVI values higher than plants. That..." | Read more » about 10 years ago
cfastie "Tom, Maybe it would also be useful to you to have DNG images (via CHDK) from my full spectrum Canon A810? " | Read more » about 10 years ago
cfastie "Hi Tom, I didn't capture RAW with the S95, and the Mobius does not do RAW (although the firmware is open source, so it's possible). I could capture..." | Read more » about 10 years ago
cfastie "Mathew, That's a lot of people who need hard evidence that it's dusty. I guess we'll just wait until Don can get the price down. " | Read more » about 10 years ago
cfastie "The OpenLux will be able to solve lots of problems, but I only have one problem -- I live in a rural neighborhood on a dusty road and local officia..." | Read more » about 10 years ago
cfastie "It seems like there are a lot of people who are worried about living in a dusty environment, but most of us already know whether it's dusty where w..." | Read more » about 10 years ago
cfastie "Chris, Very nice device. And smart testing setups. The Explorables visualizations are fantastic. That will change the way people understand data se..." | Read more » about 10 years ago
cfastie "Is the levels stretching you are referring to the same thing as histogram stretching? If so, it should be high priority. If the look up table feat..." | Read more » about 10 years ago
cfastie "Juan, Your bed spring hangups are a good idea. I found these for sale, but even smaller ones would be better. I might have to go looking for old be..." | Read more » about 10 years ago
cfastie "There was some discussion of similar approaches a year ago on the plots-infrared list. That was related to a technique of monitoring mushroom deter..." | about 10 years ago
cfastie "Field testing of this device is described in this note: http://publiclab.org/notes/cfastie/5-21-2012/range-tiny-remote " | Read more » about 10 years ago
cfastie "That looks like a fun day of flying, and lots of work. There were 40 mph gusts at JFK that day, so that was a severe test for your first outing. It..." | Read more » about 10 years ago
cfastie "Things I want to know about your table: What is a "vis-red block above lens?" Why is the above different for the A495 and Mobius? Does the "lens"..." | Read more » about 10 years ago
cfastie "It looks like you've done a good job matching the NDVI index from the two cameras. It's hard to evaluate the meaningfulness of the NDVI images beca..." | Read more » about 10 years ago
cfastie "Pat, I've used Hangups a lot and they are probably the best solution. Brooxes KAP-klips are also proven effective, and may be easier to use. They a..." | Read more » about 10 years ago
cfastie "Jaco, The fact that your camera now focuses only in certain ranges suggests that the sensor is the wrong distance from the lens. At the factory, t..." | Read more » about 10 years ago
cfastie "Santiago, You can download that look up table at this page; http://publiclab.org/wiki/photo-monitoring-plugin. Copy it into the luts subdirectory i..." | Read more » about 10 years ago
cfastie "Thanks Pat. Here is your Picavet cross starting to print: http://youtu.be/yqeL9IcK3Pg " | Read more » about 10 years ago
cfastie "To compute NDVI, you have to know the relative amount of light in a visible and an NIR band being reflected from plant leaves. The difference betwe..." | Read more » about 10 years ago