| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| liz | "Very cool! I just asked this question: https://publiclab.org/questions/liz/09-22-2017/how-has-ph-testing-evolved-over-time " | Read more » | about 7 years ago | |||
| mathew | "Yes, thanks, Chris! I was focusing on finding the right image, not getting the right numbers in. " | Read more » | almost 8 years ago | |||
| cfastie | "Mathew, that diagram is a little misleading. A lens with a 45° field of view (focal length of 44mm equiv.) would capture a photo with a long side e..." | Read more » | almost 8 years ago | |||
| mathew | "Chris's simplified answer is illustrated in our balloon mapping guide: Most camera lenses have a viewing area angle close to 90 degrees, but oft..." | Read more » | almost 8 years ago | |||
| ives | "That's the same measure I always adopted. For 100m above the ground level, 100m coverage at the smaller side of the picture. " | Read more » | almost 8 years ago | |||
| cfastie | "The area of ground covered by an aerial photograph depends on both the height of the camera and the focal length of the lens. Lenses typically used..." | Read more » | almost 8 years ago | |||
| ajawitz | "YAY!!! I took your advice and added a 20 ft fuzzy tail and it worked like a charm! I still have to process all the photos before I can call the fl..." | Read more » | over 9 years ago | |||
| mathew | "Awesome summary of the kites! I've had good luck with a french signal kite but only when it had a long (15' of string) drogue tail attached. it d..." | Read more » | over 9 years ago | |||
| eustatic | "How did i miss this note? excellent discussion, y'all I wrote this up after a chat with mathew http://publiclab.org/notes/eustatic/11-11-2014/a-m..." | Read more » | about 10 years ago | |||
| eustatic | "sweet cup rig have you all seen that there's a waterproof case for mobius action cams that includes a heat disperser? i'm sure it costs as much ..." | Read more » | about 10 years ago | |||
| ajawitz | "Yes, I conducted my own test by correcting values using both menus on two copies of a single photo and the photos came out identical. This is how t..." | Read more » | over 10 years ago | |||
| Philgib | "I guess I read your question too fast or it is too late here (past midnight) or I am too old... Anyway... I am using the first 2 variables in the ..." | Read more » | over 10 years ago | |||
| Philgib | "Sure. I won't say I have the best way to do it but that works for me for many different lenses. Take a picture of that screen : http://1.bp.blogsp..." | Read more » | over 10 years ago | |||
| ajawitz | "Philgib- I tried using the GIMP+BIMP combination that you suggested and it seems relatively straightforward. The only problem is I have no way of..." | Read more » | over 10 years ago | |||
| ajawitz | "cfastie- Now that I'm back in the air, I definitely see what you're talking about with the lens distortion... My latest attempt- http://archive.pu..." | Read more » | over 10 years ago | |||
| ajawitz | "Yeah, I figured underwater light plays by a whole new set of rules. So much remains to be learned that it could easily get overwhelming. Underwate..." | Read more » | over 10 years ago | |||
| mathew | "This is super cool! I'd consider taking photos without any filter in the camera-- the #19 Fire will probably not be helpful. UV is the light that p..." | Read more » | over 10 years ago | |||
| eustatic | "waay coool " | Read more » | over 10 years ago | |||
| patcoyle | "Neat stuff! " | Read more » | over 10 years ago | |||
| ajawitz | "I'd definitely like to learn more about optical windows. I was actually preparing for something very similar to what you suggest since I didn't exp..." | Read more » | over 10 years ago | |||
| cfastie | "That is correct that a red filter seems to work much better than a blue filter in a Mobius. The conversion Jeff cited is just for removing the IR b..." | Read more » | over 10 years ago | |||
| warren | "We'll soon be shipping red filters (Rosco #17 "Fire") in the filter kits too, but just need to update the documentation. For conversion, definitely..." | Read more » | over 10 years ago | |||
| ajawitz | "Now I'm really curious to try this with Infragram! Warren- Am I correct in guessing that the Infrablue pack of IR filters will not work with the M..." | Read more » | over 10 years ago | |||
| ajawitz | "Thats funny because I stumbled into this project while trying to adapt Scott's/Eustatic's floating KAP rig to the Mobius- http://publiclab.org/note..." | Read more » | over 10 years ago |