dallvr wrote:
Terrific photo, for which you did a lot of planning, and a lot of work in processing! Based on my one experience at Mono lake shooting at night, I am wondering if you had to deal with airliners flying to/from LAX crossing the skies you were shooting. Did you have to remove planes from your images?
I don't recall seeing that many in that direction, but removing planes is actually extremely easy for stacked shots as long as you use outlier rejection methods on each pixel stack. A simple naive method is to calculate the mean and variance and throw out any data points that are more than 1 or 2 standard deviations from the mean and then average again. There are more advanced methods including e.g. Generalized ESD test which you can also use. Planes just *poof* disappear.
wuxiekeji wrote:
I don't recall seeing that many in that direction, but removing planes is actually extremely easy for stacked shots as long as you use outlier rejection methods on each pixel stack. A simple naive method is to calculate the mean and variance and throw out any data points that are more than 1 or 2 standard deviations from the mean and then average again. There are more advanced methods including e.g. Generalized ESD test which you can also use. Planes just *poof* disappear.
Thanks, I have only removed the streaks manually. Nice to know that there are more sophisticated methods.
That's pretty amazing. I knew those things were up there and invisible to the naked eye, but I had not idea they were sizeable in the night sky. I know what Jack means, it somehow seems off, but that's probably because I expected it to be smaller.
