| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| cfastie | "That looks like a real find. I suspect some experimentation will be required to get photos of the spectra. The spectral image is probably not..." | Read more » | over 8 years ago | |||
| cfastie | "First, the maths. 8 foot diameter balloon weighs 600 grams, so when inflated each cm² weighs 0.00321 grams 5.5 foot diameter balloon weighs 350 gra..." | Read more » | over 8 years ago | |||
| cfastie | "This all looks like a lot of fun. I'm sure the bumblebees are very excited as well. The balloon looks great. It looks like a larger version of the..." | Read more » | over 8 years ago | |||
| cfastie | "The store.publiclab.org site says: "We also sell a custom version of this camera which has been factory-modified to replace its infrared-blocking f..." | | over 8 years ago | |||
| cfastie | "Sorry I missed some questions. Calibration targets work outside or in a greenhouse. Calibration targets are hard to find and very expensive. But ..." | Read more » | over 8 years ago | |||
| cfastie | "If your spectrometer uses a webcam, you can use a webcam program that does interval shooting or timelapse. I tried a couple of these a few years ag..." | Read more » | over 8 years ago | |||
| cfastie | "The Photo Monitoring plugin allows any band (R,G,B) to be used as the visible band (VIS). With the Mapir camera, all three bands from the RED camer..." | Read more » | over 8 years ago | |||
| cfastie | "There are lots of examples of DIY spectrometers based on linear CCD detectors which are just single rows of pixels with no color filters over them...." | Read more » | over 8 years ago | |||
| cfastie | "The daffodil spectra are great lessons. It's very unusual to see much yellow in the photos of diffraction patterns from Public Lab spectrometers. T..." | Read more » | over 8 years ago | |||
| cfastie | "Hi viechdokter, These are great observations. They reveal important features of spectra created using consumer cameras as the detector. It's real..." | Read more » | over 8 years ago | |||
| cfastie | "NDVI is based solely on color (near infrared is one of the colors). If a camera records different colors for two leaves, the NDVI computed for tho..." | Read more » | over 8 years ago | |||
| cfastie | "I like #4 too. I don't have a good answer for the type of glue. Something thick and quick drying. It does not have to be sticky, it just has to for..." | Read more » | over 8 years ago | |||
| cfastie | "The new filter can be put several different places: stick it on the front of the lens. Build a frame to hold it in front of the lens: https://pub..." | Read more » | over 8 years ago | |||
| cfastie | "Those photos of the cool old ruins work fine in Fiji, and the mosaic images from ICE also work in Fiji. The Photo Monitoring plugins stopped worki..." | Read more » | over 8 years ago | |||
| cfastie | "We need a lot more stories like this of KAP sessions gone awry; there is a lot more to learn here than when everything goes well. But maybe most of..." | Read more » | over 8 years ago | |||
| cfastie | "Are those photos mosaics of more than one photo? What program did you use to combine the photos? That program might not be making jpegs that Fiji l..." | Read more » | over 8 years ago | |||
| cfastie | "Wow, this is a gorgeous piece of equipment. It seems to represent a huge effort in design and construction. I was pleased to learn that continuous..." | Read more » | over 8 years ago | |||
| cfastie | "Hi LaPa, Your time-lapse videos are impressive. These are excellent teaching videos. You can clearly see that the NDVI values for the foliage of t..." | Read more » | over 8 years ago | |||
| cfastie | "When you get to the step here: Note that it is asking for a "Photo Pair File." This is made with the plugin called "Create dual image list." It..." | Read more » | over 8 years ago | |||
| cfastie | "It seems that the Mobius timelapse features could be all you need to capture turbidity events. Depending on the stream or river, turbidity events c..." | Read more » | over 8 years ago | |||
| cfastie | "That could very useful. I wonder how long the camera could operate remotely. Will the camera gobble up a lot of power? Does the camera just power..." | Read more » | over 8 years ago | |||
| cfastie | "This is great. Jeff is right that you need a post processing routine to learn if you captured anything interesting. In fact did you look closely at..." | Read more » | over 8 years ago | |||
| cfastie | "berkelha, Assuming your camera has a red filter, instead of RGB it will have RGN. The green channel will be mostly NIR, so it's really RNN, but th..." | Read more » | over 8 years ago | |||
| cfastie | "cjtiaan, Were you able to download the raw data from SpectralWorkbench? There are links for that on each spectrum page. Chris " | Read more » | over 8 years ago |