Comments

Author Comment Last activity Moderation
cfastie "Congratulations on your award. The reported stories had many layers. " | Read more » about 9 years ago
cfastie "Those two photos have some good plant health information in them, especially the second one of tree foliage (family Anacardiaceae?). That one produ..." | Read more » about 9 years ago
cfastie "I got a notification of this last one (7:52 AM today). It ended up in my gmail spam folder. It's the first one since Oct 15. " | Read more » about 9 years ago
cfastie "You don't have a boat? The wind should be great out there on the lake. Or it's the perfect application for your helikite. You might need to submit ..." | Read more » about 9 years ago
cfastie "It sounds like you found a good system. Folks have been lifting cameras with these poles for many years, and there are a lot of different types of ..." | Read more » about 9 years ago
cfastie "Yikes, I hadn't seen the pre-built boost converter corner of ebay. That could be the source of all solutions. A lot of those output 5V for charging..." | Read more » about 9 years ago
cfastie "This looks very promising. There are a couple of controls that might add a lot to the interpretability of your tests. 1) With the water bottle in ..." | Read more » about 9 years ago
cfastie "Kiran, The graph is a histogram which can be made in free programs like GIMP, IrfanView, or Fiji or photo editing programs like Photoshop. Here is..." | Read more » about 9 years ago
cfastie "Hi Ethan, Your CFL spectra look really good. It's not that common to resolve both of those green lines with a PL spectrometer, so you must have do..." | Read more » about 9 years ago
cfastie "That's a great idea. Last week as I was driving away from the house on the way to Middlebury College to launch the Saturn V Rig at 35°, It occurred..." | Read more » about 9 years ago
cfastie "Yes, any battery pack will work. The SkyShield has an LDO voltage regulator that can take an input from battery up to 17 volts. So it's easy to fin..." | Read more » about 9 years ago
cfastie "The blue filter did not seem to change the photo very much. The three channels are still very similar. Even for just a leaf (marquee below) the bri..." | Read more » about 9 years ago
cfastie "At one time the Pi NOIR camera shipped with a piece of blue filter that blocked red light. This could be used to make photos that could be transfor..." | Read more » about 9 years ago
cfastie "Hi Kiran, The Pi NOIR camera does not have an IR block filter (NOIR = no IR). So it is a full spectrum camera. That means some NIR is captured in ..." | Read more » about 9 years ago
cfastie "@dbenjamin You mean you hail from Planet LEAFFEST? @patcoyle I guess I will have to try the new MapKnitter feature. I couldn't get very many nadir ..." | Read more » about 9 years ago
cfastie "If the original Snowy Sky CFL is calibrated by pinning down the 436 nm and 546 nm peaks (using a macro) it looks like this: Most of the peaks do..." | Read more » about 9 years ago
cfastie "I got a notification of this because I now monitor the Spam folder of my gmail account. Did gmail change its policy or did Public Lab change its no..." | Read more » about 9 years ago
cfastie "That's a very important observation. Had I originally calibrated this spectrum on the 436 line and the 611 line (instead of 405 and 650), all the o..." | Read more » about 9 years ago
cfastie "Hi Gwill, there do seem to be a lot of terbium peaks. I have not yet figured out how to know which of those peaks are expected in the light from a ..." | Read more » about 9 years ago
cfastie "@icarito Thanks for the tip. On September 20, gmail started to collect the notifications in the Spam folder. I had checked the gmail "Junk E-mail" ..." | Read more » about 9 years ago
cfastie "Now there is a new set of references. A newly corrected image (background) of the diffraction pattern of Snowy Sky CFL with emission lines shifte..." | Read more » about 9 years ago
cfastie "@icarito I did not receive a notification. " | Read more » about 9 years ago
cfastie "Correcting the diffraction pattern was done this way: marquee select lines and translate them left and right? This was done in the Photoshop file..." | Read more » about 9 years ago
cfastie "I did a check on the files I attached to the last comment and they are not as precise as I thought they would be. A graph of the data file of int..." | Read more » about 9 years ago