Comments

patcoyle commented on Kukui'ula Resort : "I found the map on Knitter at: https://mapknitter.org/map/view/kukuiula Good result. Nice long narrow swath of stitched images with good detail. " | Read more » almost 6 years ago
mathew commented on Portable Energy Scavenging Kit 0.1a : "The Adafruit circuits are fairly inefficient, and in practice solar panels are already only like 10% efficient. Story time: Over two years ago I ..." | Read more » almost 6 years ago
commented on intensity calibration : "Something to keep in mind that the logarithmic (or other) relationship of sensor measurement value vs. incoming light intensity may well vary accor..." | Read more » almost 6 years ago
ckmurt commented on Calibration Pictures : "one final note, my camera is facing inward in the box which seems to give it better geometry with the slit on mine. " | Read more » almost 6 years ago
ckmurt commented on Calibration Pictures : "also it seems that there might be some problems with the calibration program. It often gives odd numbers for the wavelengths, at least for me. " | Read more » almost 6 years ago
ckmurt commented on Calibration Pictures : "I've been tweaking the setup today, its much crisper. I think some of the noise on the blue spectrum may have been from the blue light on the webca..." | Read more » almost 6 years ago
commented on Webcam Conversion to (Near-) Infrared : "Nice tutorial! I am building a DPSS laser and need a near IR viewer for alignment @ 808nm and 1064nm. The beams are quite bright on the optics (If..." | Read more » almost 6 years ago
commented on Webcam Conversion to (Near-) Infrared : "Nice tutorial! I am building a DPSS laser and need a near IR viewer for alignment @ 808nm and 1064nm. The beams are quite bright on the optics (If..." | Read more » almost 6 years ago
warren commented on Calibration Pictures : "The blue is not so bad... i think that blue peak may just be broader, see these examples: Is your bulb a "warm" fluorescent? There are mor..." | Read more » almost 6 years ago
ckmurt commented on Calibration Pictures : "So i refocused it, this was the most recent calibration, the red and green channels are producing very clear and crisp peaks and valleys, however, ..." | Read more » almost 6 years ago
ckmurt commented on Calibration Pictures : "Nice detective work, I'll give that a try today and see how it goes. " | Read more » almost 6 years ago
warren commented on Calibration Pictures : "Hi, ckmurt - i double checked by going through the build process from scratch again, and you're right -- 3-5" is too close. For whatever reason it ..." | Read more » almost 6 years ago
donblair commented on Portable Energy Scavenging Kit 0.1a : "Gregor -- thanks for that link! I hadn't seen bootstrapsolar -- they're using almost precisely the same circuitry (though they went ahead and comb..." | Read more » almost 6 years ago
donblair commented on Portable Energy Scavenging Kit 0.1a : "That's a good point, Jiansheng -- the panel is rated at 3.4 Watts, but Adafruit said they usually got around .5 Amps (~ 3 Watts, for the 6 Volt sol..." | Read more » almost 6 years ago
Babu commented on NIR Camera Calibration : "Thank you cfastie for your kind sugession. I will be in touch very soon with the image captured from the modified camera. Thanks alot " | Read more » almost 6 years ago
nedhorning commented on Update on the photo monitoring plugin for ImageJ/Fiji : "Hi - There used to be a "Downloads" link but I just checked and couldn't find it. I only had the source files in the Git repository. To get around..." | Read more » almost 6 years ago
warren commented on Spectral yeast tests at Mystic Brewery : "Well, not really, but we just took 25ml of each sample and scanned it with a xenon (halogen works too) source light. Bryan from Mystic said it's co..." | Read more » almost 6 years ago
bryanbrews commented on Spectral yeast tests at Mystic Brewery : "- " | Read more » almost 6 years ago
bryanbrews commented on Spectral yeast tests at Mystic Brewery : "I own a brewery in San Francisco and I ordered a desktop Spectrophotometer kit. Do you have step by step instructions on the yeast testing that yo..." | Read more » almost 6 years ago
liz commented on Mapping Sewage Flows in the Gowanus Canal after Sandy flood damages - the sequel : "Hey Eymund, Did you get any sense of how deep the upper milky layer on the water was on the 15th and 16th? It does look totally different than the ..." | Read more » almost 6 years ago
liz commented on Mapping Sewage Flows in the Gowanus Canal after Sandy flood damages : "Hi Jensta! We'd love to see your pictures! If you upload your pictures to your own Flickr site, and tag them "publiclaboratory", they will automati..." | Read more » almost 6 years ago
cfastie commented on NIR Camera Calibration : "Babu, Here is a paper about getting separate NIR and red bands by doing what Ned suggested – subtracting one band from another: http://cigr.ageng20..." | Read more » almost 6 years ago
Babu commented on NIR Camera Calibration : "Thanks ned. I will post pictures as soon as possible. " | Read more » almost 6 years ago
nedhorning commented on NIR Camera Calibration : "Hi Babu, As I was writing this I see you got some good comments - here are some more. Lots of good questions. I'm also looking for answers to som..." | Read more » almost 6 years ago
nedhorning commented on NIR Camera Calibration : "Hi Babu, As I was writing this I see you got some good comments - here are some more. Lots of good questions. I'm also looking for answers to som..." | Read more » almost 6 years ago
Babu commented on NIR Camera Calibration : "Thanks Cfastie and warren for your comments and suggestions. Can you suggest me some filters that might pass the NIR , Blue and Green and blocks RE..." | Read more » almost 6 years ago
warren commented on NIR Camera Calibration : "Hi babu - can you upload an image of vegetation from your camera? It would be really interesting to see. " | Read more » almost 6 years ago
cfastie commented on NIR Camera Calibration : "Hi Babu, My limited experience with these techniques leads me to suggest that it will be quite difficult to separate the red and near infrared ban..." | Read more » almost 6 years ago
commented on White balance and NIR photography : "Hi all, warm Greetings I am new in NIR photography so i have some questions regarding the white balencing, caliberation etc. Actually i have Nikon..." | Read more » almost 6 years ago
warren commented on Mapping Sewage Flows in the Gowanus Canal after Sandy flood damages - the sequel : "Really stunning images, you guys - super super sharp. And a breathtakingly different look to the water -- really concerning. " | Read more » almost 6 years ago