Comments

Author Comment Last activity Moderation
cfastie "Brother Will, who sent me the lantern slides, asked a good question today: What is a lantern slide? I guess I should have assumed that many folks b..." | Read more » almost 11 years ago
cfastie "That's an excellent color table for the heat metaphor. This topic of how to display NDVI deserves much more attention. "It'd be neat to test the r..." | Read more » almost 11 years ago
cfastie "Ned's plugin is available under downloads here: https://github.com/nedhorning/PhotoMonitoringPlugin. I still has a bit of a learning curve but offe..." | Read more » almost 11 years ago
cfastie "Here is the one I got for Rosco and also a test to see if Jeff has implemented markdown in note comments. This one mimics two AA batteries and sho..." | Read more » almost 11 years ago
cfastie "I Guess I need more practice. " | Read more » almost 11 years ago
cfastie "This is some of the best information I've seen posted here about how the Public Lab spectrometer might be used to identify this type of environment..." | Read more » almost 11 years ago
cfastie "Both timelapse programs allow selection of any available resolution including 1600x1200. The image quality I was getting from the lens did not see..." | Read more » about 11 years ago
cfastie "Mat, Can I ignore the red wire on the Sanm plug? The number 5 one labeled SWELD Ground? Or should I connect it to the wirey stuff surrounding the f..." | Read more » about 11 years ago
cfastie "Yes, finally I can comment! Were you able to flatten out the film filter which looks a bit buckled in the photo? The NIR image looks a little out ..." | Read more » about 11 years ago
cfastie "Here is a gritty report of some "activists" exploring the new oil pond in Mayflower. Although images of oiled birds have been a staple of media rep..." | Read more » about 11 years ago
cfastie "Thanks Pat (It's like Deja Vu). Jeff, I'm not sure I got a notification of your comment. But I might be confused. There are two very similar plan..." | Read more » about 11 years ago
cfastie "This is really interesting. In the photograph of the three test tubes, which drink is which? (you can enter a caption) In the set of three spectr..." | Read more » about 11 years ago
cfastie "Nice project. You say you measured absorbance at 500 nm in all your samples, but I noticed that your spectra were not calibrated -- there is no nm..." | Read more » about 11 years ago
cfastie "This was a good project. Take a look at this figure of a spectrum of a fluorescent lamp: http://en.wikipedia.org/wiki/File:Fluorescent_lighting_sp..." | Read more » about 11 years ago
cfastie "I'm curious about how you derived your data. Did you look at the height of the green peak at about 550 nm and compare that among samples? Did you..." | Read more » about 11 years ago
cfastie "It's great that you learned why methyl red adds a layer of complexity to such measurements. Is this what your results look like? I guess it cert..." | Read more » about 11 years ago
cfastie "Dan's right that it's a monochromator in that it directs light of one color (a narrow band of wavelengths) through the sample and to the detector. ..." | Read more » about 11 years ago
cfastie "Excel allows nesting if statements, so: if((if(red>green,red,green))>blue,(if(red>green,red,green)),blue) should work, if you're not int..." | Read more » about 11 years ago
cfastie "=max(blue:red) is soo much easier. Thanks. The greater of three method seems to be useful for transmission or absorption spectra when a continuous..." | Read more » about 11 years ago
cfastie "Dan, you are correct that all we want to know is how the light intensity varies across the sensor where the grating has spread out the spectrum. Un..." | Read more » about 11 years ago
cfastie "So was Mat streaming 1600x1200 which got downsampled at the browser to 640x480? And it is now possible to do less downsampling? And if downsamplin..." | Read more » about 11 years ago
cfastie "I think you understand. I didn't know that Live Capture downsamples, only that there are about 550 pixels between 400 and 700 nm in the Spectral W..." | Read more » about 11 years ago
cfastie "That's a really good spectrum, even though it looks a little dim. There are no overexposed peaks in any channel, but if the image had been brighter..." | Read more » about 11 years ago
cfastie "You're right that for aerial work a 0.5 second lag is not terminal. The whole rig will move some, but the photos from the two cameras will still ov..." | Read more » about 11 years ago