Comments

Author Comment Last activity Moderation
warren "I'm going to revise: 211px and 742px, out of a total of 1390px. " | Read more » over 8 years ago
warren "Oops, meant to share links to my tests -- here's the one I used the new calibration system on, and listed 3 approximate errors for: https://spectra..." | Read more » over 8 years ago
warren "Hmm. I guess there are pros and cons to each approach. I agree that the 546 line doesn't result in a great linear calibration -- some end up about..." | Read more » over 8 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 » over 8 years ago
warren "OK - I'm adapting the calibration slider to use the photoshop-corrected version of the Snow Sky spectrum. I read the blue 436 peak at 210px from l..." | Read more » over 8 years ago
warren "https://github.com/publiclab/plots2/issues/203 " | Read more » over 8 years ago
warren "Thanks, Chris - we were testing a different bugfix -- there were two. This latest change fixed an issue with @callouts not triggering email sends a..." | Read more » over 8 years ago
warren "Would you be willing to try a recalibration using the 436/546 lines as a starting point? Would that be useful as a point of comparison? Also - I b..." | Read more » over 8 years ago
nshapiro " @DavidMack wow, and that is even without interference from acetaldehyde & acetone etc? The article we developed our method from, http://www.n..." | Read more » over 8 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 » over 8 years ago
warren "Testing @icarito and @cfastie - pls confirm? Thanks. " | Read more » over 8 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 » over 8 years ago
warren "If it's helpful, we can probably ask some of the OTK beta participants for one, since a couple have access to lab spectrometers. In your image/ima..." | Read more » over 8 years ago
warren "Oh, cool -- can you link us to your dissertation, as a source? I'm hoping this note can be a sort of bibliography for the calibration code decision..." | Read more » over 8 years ago
gretchengehrke "Ah, it makes sense why Hg(0) won't have a fluorescence line on compound fluorescent bulbs though: the liquid Hg(0) in the tube needs to be ionized ..." | Read more » over 8 years ago
gretchengehrke "I am absolutely positive that the most common forms of Hg are Hg(0) and Hg(II) -- my whole PhD is on mercury, specifically on Hg isotopes. The onl..." | Read more » over 8 years ago
gretchengehrke "I like this idea a lot, @DavidMack. One thing we've been talking about on staff is developing a sort of environmental monitoring guide, one sectio..." | Read more » over 8 years ago
gretchengehrke "Oooh -- nice find, @DavidMack! Thanks! " | Read more » over 8 years ago
DavidMack "Excellent precision in the values for both the public lab and DOH method--so there was clearly very diligent field work! I did a quick search for ..." | Read more » over 8 years ago
nedhorning "Unfortunately those values would only work if you had the same materials that I used. To get the reflectance values you would either need to fine s..." | Read more » over 8 years ago
gretchengehrke "Thanks, @warren, that would be great! I'll tag it for the blog too. " | Read more » over 8 years ago
DavidMack "The topic is kind of overwhelming when you think of all the possibilities but maybe one model would be to start compiling how different METHODS wer..." | Read more » over 8 years ago
liz "NYDEC Tony Carlacci showing the canisters in the air monitor that was set up near Tonawanda Coke to collect a year of data: Using a FLIR to see ..." | Read more » over 8 years ago
warren "Hi, Gretchen - love the in-depth post. Was this potentially blog material too? Also, I'm happy to try to help with the images, it looks like there ..." | Read more » over 8 years ago
warren "Great photos! Haha, Laura, you're talking to the right person -- Pat has written tutorials on the subject - click on his username to see his resea..." | Read more » over 8 years ago
gretchengehrke "Here is a picture of the DNPH cartridge used in the DOH analysis, and one of Gretchen learning to use the DOH instrument. " | Read more » over 8 years ago
gretchengehrke "Here are the graphs (not sure why they didn't show up in the original post): " | Read more » over 8 years ago
warren "I also wanted to link in this issue I just filed based on some ideas that came out of the staff meeting -- it could list proposed upgrades for a gi..." | Read more » over 8 years ago
chezshea "What height did you capture these images from? They look great! " | Read more » over 8 years ago
liz "Thanks for bringing this together @gretchengehrke and @shannon and many others. This is going to really help the "Tool Page Standardization" effort..." | Read more » over 8 years ago