Comments

Author Comment Last activity Moderation
stoft "Done. " | Read more » almost 8 years ago
stoft "Thoughts: 1 - Splash-resistant, maybe, (there are holes), 2 - Masonite does not cut nicely, 3 - Acrylic (even laser-cut) tends to have very sharp e..." | Read more » almost 8 years ago
stoft "Just checking .... what is the mechanical relationship between the dimensions of the paper module and the inside dimensions of the laser-cut cover?..." | Read more » about 8 years ago
stoft "I'm not following the flap bit. Why does the spectrometer need to be blocked? Also, from some simple experiements, I found that I needed much much ..." | Read more » about 8 years ago
stoft "Clever; only 2 part types. Since the internal components are still merely "trapped" by the paper housing, you might consider adding a couple holes ..." | Read more » about 8 years ago
stoft "Jeff, I have a local supplier call Tap Plastics but I assume laser-cut plastics are now available in most metropolitan areas. Ok, that's fine to k..." | Read more » about 8 years ago
stoft "@viechdokter, yes, it was just an experimental baffle for stray light. Keeping reflections low inside the space between slit and grating is necessa..." | Read more » about 8 years ago
stoft "Actually, you need several additional pieces for SWB: 1) average 3-5 parallel lines, 2) monitor stability and take data until it IS stable or times..." | Read more » about 8 years ago
stoft "Ideally, the user would select a "stable" ('smooth' or 'broad peak') region to monitor and then the software would take samples (and average) while..." | Read more » about 8 years ago
stoft "You mean something like this? (from https://publiclab.org/notes/stoft/03-02-2015/plab-3-spectrometer-upgrade-prototype): Yes, mine could be simp..." | Read more » about 8 years ago
stoft "@viechdokter yes, having a stable source helps isolate the noise source. I chose the Solux as I could measure the current as an independent check o..." | Read more » about 8 years ago
stoft "I believe the configuration with 45 and 20 deg was extracted from physically experimenting on the first PLab design. ( I think they were having dif..." | Read more » about 8 years ago
stoft "Yes, I'd agree that time averaging would help and, if possible, it sould be the default to reduce this noise component. I do not have 30 fps data, ..." | Read more » about 8 years ago
stoft "Hmmm... a few counter thoughts. 1) To match the camera optics with the grating to keep the spectral band spread across the pixels seems to require..." | Read more » about 8 years ago
stoft "Jeff; I'm glad I was clear. The mechanics is like the rest; it starts with the objective / spec that it is an optical device. That immediately rule..." | Read more » about 8 years ago
stoft "@viechdokter:, thanks; just a lot of years of practice. Not to worry, your's are logical and thoughtfully organized. Jeff, thanks. Yes, new observ..." | Read more » about 8 years ago